สถิติ
เปิดเมื่อ28/01/2015
อัพเดท19/06/2024
ผู้เข้าชม2262267
แสดงหน้า2779699
ปฎิทิน
December 2024
Sun Mon Tue Wed Thu Fri Sat
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
    
สมาชิก

สมัครสมาชิก | ลืมรหัสผ่าน

ทังสเตนคาร์ไบด์

อ่าน 764302 | ตอบ 8468
ทังสเตนคาร์ไบด์
       ทังสเตนคาร์ไบด์ (อังกฤษ: tungsten carbide) มีสูตรเคมีคือ WC ในรูปพื้นฐานจะมีลักษณะเป็นผงสีเทาละเอียด มี 2 โครงสร้างคือแบบหกเหลี่ยม (α-WC) และแบบลูกบาศก์ (β-WC)
 
       ทังสเตนคาร์ไบด์เตรียมได้จากการทำปฏิกิริยาระหว่างทังสเตนกับคาร์บอนที่อุณหภูมิ 1400–2000 °C[3] หรือให้ความร้อนกับทังสเตนไตรออกไซด์และแกรไฟต์โดยตรงที่ 900 °C หรือในแก๊สไฮโดรเจนที่ 670 °C ตามด้วยการคาร์บิวไรเซชันในแก๊สอาร์กอนที่ 1000 °C[4] หรือใช้วิธีการเคลือบด้วยไอเคมี เช่น
  • ทำปฏิกิริยาระหว่างทังสเตนเฮกซะคลอไรด์กับไฮโดรเจนและมีเทนที่อุณหภูมิ 670 °C (1,238 °F)
 WCl6 + H2 + CH4 WC + 6 HCl
  • ทำปฏิกิริยาระหว่างทังสเตนเฮกซะฟลูออไรด์กับไฮโดรเจนและเมทานอลที่อุณหภูมิ 350 °C (662 °F)
                WF6 + 2 H2 + CH3OH → WC + 6 HF + H2O
       ทังสเตนคาร์ไบด์มีจุดหลอมเหลวที่ 2,870 °C (5,200 °F) และจุดเดือดที่ 6,000 °C (10,830 °F) มีความแข็งระดับ 9 ตามมาตราโมสและประมาณ 2600 ตามมาตราวิกเคอส์[5] ทังสเตนคาร์ไบด์มีความแข็งเกร็งมากกว่าเหล็กกล้าประมาณ 2 เท่า มีค่ามอดุลัสของยังประมาณ 530–700 GPa (77,000–102,000 ksi)[2][6][5][7] โมดูลัสของแรงบีบอัด 630–655 GPa และโมดูลัสของแรงเฉือน 274 GPa[8]
 
ด้วยคุณสมบัติความแข็งและทนความร้อนสูง ทังสเตนคาร์ไบด์จึงใช้ทำเป็นเครื่องมือตัดหรือหัวเจาะ ใช้ทำกระสุนเจาะเกราะ เครื่องมือผ่าตัด อุปกรณ์กีฬา เครื่องประดับและอื่น ๆ
 
 
 
 
 
 
 
 
 
 
อ้างอิง
 
  1. Kurlov, p. 22
  2. Blau, Peter J. (2003). Wear of Materials. Elsevier. p. 1345. ISBN 978-0-08-044301-0.
  3. Pierson, Hugh O. (1992). Handbook of Chemical Vapor Deposition (CVD): Principles, Technology, and Applications. William Andrew Inc. ISBN 0-8155-1300-3.
  4. Zhong, Y.; Shaw, L. (2011). 'A study on the synthesis of nanostructured WC–10 wt% Co particles from WO3 , Co3O4 , and graphite'. Journal of Materials Science 46 (19): 6323–6331. Bibcode:2011JMatS..46.6323Z. doi:10.1007/s10853-010-4937-y.
  5. Groover, Mikell P. (2010). Fundamentals of Modern Manufacturing: Materials, Processes, and Systems. John Wiley & Sons. p. 135. ISBN 978-0-470-46700-8.
  6. Kurlov, p. 3
  7. Cardarelli, François (2008). Materials Handbook: A Concise Desktop Reference. Springer Science & Business Media. pp. 640–. ISBN 978-1-84628-669-8.
  8. Kurlov, pp. 30, 135
  9. Sprince, NL.; Chamberlin, RI.; Hales, CA.; Weber, AL.; Kazemi, H. (1984). 'Respiratory disease in tungsten carbide production workers'. Chest 86 (4): 549–557. PMID 6434250. doi:10.1378/chest.86.4.549.
  10. 12th Report on Carcinogens'. National Toxicology Program. http://ntp.niehs.nih.gov/go/roc12. เรียกข้อมูลเมื่อ 2011-06-24.
ความคิดเห็น :
3010
อ้างอิง

Margao Escorts
A joyful night was spent with a very beautiful Russian girl who is a Call Girl that provides you services for making you satisfied.
 
ลิงค์ที่เกี่ยวข้อง : http://www.callgirlsjaipurescorts.com/call-girls-margao-escorts
Margao Escorts [49.204.161.xxx] เมื่อ 6/12/2022 14:48
3011
อ้างอิง

Kolkata call girls

Why To Choose Young Sexy Call Girls in Kolkata For Stylish Escort Services?

Alishajoshi Kolkata escorts agency has offered our esteemed client escorts and call girls in Kolkata service with a significant number of high profile escorts and call girls. At the point when any of guests will need escorts service with high profile independent call girls in Kolkata will come in our escorts agency where the client will get the escorts girl which he loves and need the fun with our high profile girls. There are a considerable lot of guests who presently have an individual spot for making fun also our Kolkata escort service agency will give them a full installation for making fun. You can come in our escorts agency we will give you condos. Our independent hot sexy girls in Kolkata will invest a ton of energy with you and make fun.

Avail High Profile Independent Kolkata Call Girls

Kolkata call girls with models is exceptionally well given and a significant number of the guests come in our escorts agency Kolkata. A portion of the youthful girls are likewise trusting that our guests will make an escorts fun. Our Muslim escorts in Kolkata girls are accessible for all occasions in agency. What’s more, more frequently than not guests will take escorts girls in out regions for taking escorts service in Kolkata. At the point when you're with our youthful girls you'll get full fun from their body. Our Kolkata escorts girls are veritably hot and have extremely fit and seductive body. So pull in guests towards them for taking the fun with her. At the point when you pick our youthful model escorts in Kolkata girl for service she'll invest the stylish energy with you where you take her for fun.

Call Girls in Kolkata for Service in Affordable Price

When you come in our escorts agency you'll get college escorts in Kolkata girls for a service in veritably affordable rates. At the point when you pick our escorts girls you can pick escorts girl as indicated by your decision which makes you exceptionally intrigued in service. Our each of Kolkata call girl escorts was excellent and she'll have the option to give you a top quality escorts service. You can bespeak our council Call Girls in Kolkata for administration at your doorstep too. You'll go through special moments with her and she was extremely amped up for going through a full night with you. At the point when you take her for a service she noway made any issue during service. Our Russian escorts in Kolkata are accessible for an all day in escorts agency. therefore, you can come whenever to take service with our escorts girls.

Young Kolkata Call Girls Escort Service

In our escorts agency request of youthful vip escorts in Kolkata girls is high. You'll come in our escorts agency Kolkata also you'll see a significant number of youthful council call girls Kolkata. All independent escorts girls in Kolkata come each day in the agency for giving service. However, our Alishajoshi escorts agency will give you the full office of the private room too, If you need to take escorts service with model call girls in Kolkata. It's the stylish thing for you and the client who's new in Kolkata and needs a youthful celebrity escorts in Kolkata. There are multitudinous kinds of escorts service styles known by our escorts girls which make you upbeat in service.

Call Us For Booking Kolkata Escorts Service

There are numerous guys who are live alone and they need a mate from a immature lady who'll give him loads of fun which he needs. We're the stupendous Kolkata who are giving this kind of housewife escorts in Kolkata service and complete the vehemence of guys. There are a large number of guests who are calling us when they're free and have a sensation of making fun with our youthful ladies. We're giving veritably fast service when you take escorts service in Kolkata at your home. Our Bengali escorts in Kolkata will come at your doorstep and will give you full escorts fun with her hot looking body.

High Profile Kolkata Call Girls Service

Oh My God! Its summers now and you don’t feel like going out or hanging out with your musketeers. You just prefer to stay outdoors, being lazy in your room. But at certain time of the night you crave for coitus, just type Foreigner escorts in Kolkata and they will be available incontinently in your room. In case you aren't willing to call her into your room, they you can bespeak a room hard or whichever position you prefer and just set out to crave your hunger.

Easy going gests with an stranger can be hard to deal with, obviously you cannot ask a foreigner passing by to have coitus with you. Luckily with Kolkata Call Girls service online, it gives you the moment access to chancing coitus mates for one night incontinently. Loads of high profile escorts in Kolkata girls are joining to association spots like other escorts agencies, making it easier to find easy going coitus. In any case, do n’t get careless; just swipe through the biographies and pick a girl of your choice.

Kolkata hotel escorts lets you witness each and every moment. It’s impeccably fine if you want to date and sleep with someone or just have wild coitus just because they are ridiculously good- looking or just because you're having an appetite incontinently to have coitus tonight. Occasionally sleeping with a beautiful Kolkata Call Girls will make you realize that having a mate to have coitus at night who physically keeps you involved in every exertion is commodity enthusiastic. Or it might make you realize that certain aspects are essential, especially having fun while having wild coitus with Punjabi escorts in Kolkata.

Just class Kolkata call girls, get in touch through Alishajoshi and you're formerly in the arena to do coitus. She'll come to you within twinkles of your booking, no matter where you're located in Kolkata. So what are you staying for? A great occasion to get pleasure in your sexual life. There’s nothing to worry about, its Safe & its wild!

Anywhere, Anytime Unlimited Fun With Kolkata Escorts

What’s holding you? Don’t stay to have an enjoyable night. The more you crave, the more you get excitement. Our teenager escorts in Kolkata drive you crazy in bed. The way you want to indulge in any fun exertion on bed, you'll be satisfied.

You're alone at your home, there's no bone to spend the weekend with you. So, you decide to hang out with your musketeers in the evening and reach home late at night. But suddenly there's an appetite to have coitus at 2 am in the morning.

What to do? You die in despair. What to do? Just click on to Alishajoshi and choose the hot and sexy call girls you want to coitus with unlimited shot options. She'll come right at your destination. No more waiting!

 
Kolkata call girls [223.190.35.xxx] เมื่อ 6/12/2022 15:34
3012
อ้างอิง

Kolkata call girls

Why To Choose Young Sexy Call Girls in Kolkata For Stylish Escort Services?

Alishajoshi Kolkata escorts agency has offered our esteemed client escorts and call girls in Kolkata service with a significant number of high profile escorts and call girls. At the point when any of guests will need escorts service with high profile independent call girls in Kolkata will come in our escorts agency where the client will get the escorts girl which he loves and need the fun with our high profile girls. There are a considerable lot of guests who presently have an individual spot for making fun also our Kolkata escort service agency will give them a full installation for making fun. You can come in our escorts agency we will give you condos. Our independent hot sexy girls in Kolkata will invest a ton of energy with you and make fun.

Avail High Profile Independent Kolkata Call Girls

Kolkata call girls with models is exceptionally well given and a significant number of the guests come in our escorts agency Kolkata. A portion of the youthful girls are likewise trusting that our guests will make an escorts fun. Our Muslim escorts in Kolkata girls are accessible for all occasions in agency. What’s more, more frequently than not guests will take escorts girls in out regions for taking escorts service in Kolkata. At the point when you're with our youthful girls you'll get full fun from their body. Our Kolkata escorts girls are veritably hot and have extremely fit and seductive body. So pull in guests towards them for taking the fun with her. At the point when you pick our youthful model escorts in Kolkata girl for service she'll invest the stylish energy with you where you take her for fun.

Call Girls in Kolkata for Service in Affordable Price

When you come in our escorts agency you'll get college escorts in Kolkata girls for a service in veritably affordable rates. At the point when you pick our escorts girls you can pick escorts girl as indicated by your decision which makes you exceptionally intrigued in service. Our each of Kolkata call girl escorts was excellent and she'll have the option to give you a top quality escorts service. You can bespeak our council Call Girls in Kolkata for administration at your doorstep too. You'll go through special moments with her and she was extremely amped up for going through a full night with you. At the point when you take her for a service she noway made any issue during service. Our Russian escorts in Kolkata are accessible for an all day in escorts agency. therefore, you can come whenever to take service with our escorts girls.

Young Kolkata Call Girls Escort Service

In our escorts agency request of youthful vip escorts in Kolkata girls is high. You'll come in our escorts agency Kolkata also you'll see a significant number of youthful council call girls Kolkata. All independent escorts girls in Kolkata come each day in the agency for giving service. However, our Alishajoshi escorts agency will give you the full office of the private room too, If you need to take escorts service with model call girls in Kolkata. It's the stylish thing for you and the client who's new in Kolkata and needs a youthful celebrity escorts in Kolkata. There are multitudinous kinds of escorts service styles known by our escorts girls which make you upbeat in service.

Call Us For Booking Kolkata Escorts Service

There are numerous guys who are live alone and they need a mate from a immature lady who'll give him loads of fun which he needs. We're the stupendous Kolkata who are giving this kind of housewife escorts in Kolkata service and complete the vehemence of guys. There are a large number of guests who are calling us when they're free and have a sensation of making fun with our youthful ladies. We're giving veritably fast service when you take escorts service in Kolkata at your home. Our Bengali escorts in Kolkata will come at your doorstep and will give you full escorts fun with her hot looking body.

High Profile Kolkata Call Girls Service

Oh My God! Its summers now and you don’t feel like going out or hanging out with your musketeers. You just prefer to stay outdoors, being lazy in your room. But at certain time of the night you crave for coitus, just type Foreigner escorts in Kolkata and they will be available incontinently in your room. In case you aren't willing to call her into your room, they you can bespeak a room hard or whichever position you prefer and just set out to crave your hunger.

Easy going gests with an stranger can be hard to deal with, obviously you cannot ask a foreigner passing by to have coitus with you. Luckily with Kolkata Call Girls service online, it gives you the moment access to chancing coitus mates for one night incontinently. Loads of high profile escorts in Kolkata girls are joining to association spots like other escorts agencies, making it easier to find easy going coitus. In any case, do n’t get careless; just swipe through the biographies and pick a girl of your choice.

Kolkata hotel escorts lets you witness each and every moment. It’s impeccably fine if you want to date and sleep with someone or just have wild coitus just because they are ridiculously good- looking or just because you're having an appetite incontinently to have coitus tonight. Occasionally sleeping with a beautiful Kolkata Call Girls will make you realize that having a mate to have coitus at night who physically keeps you involved in every exertion is commodity enthusiastic. Or it might make you realize that certain aspects are essential, especially having fun while having wild coitus with Punjabi escorts in Kolkata.

Just class Kolkata call girls, get in touch through Alishajoshi and you're formerly in the arena to do coitus. She'll come to you within twinkles of your booking, no matter where you're located in Kolkata. So what are you staying for? A great occasion to get pleasure in your sexual life. There’s nothing to worry about, its Safe & its wild!

Anywhere, Anytime Unlimited Fun With Kolkata Escorts

What’s holding you? Don’t stay to have an enjoyable night. The more you crave, the more you get excitement. Our teenager escorts in Kolkata drive you crazy in bed. The way you want to indulge in any fun exertion on bed, you'll be satisfied.

You're alone at your home, there's no bone to spend the weekend with you. So, you decide to hang out with your musketeers in the evening and reach home late at night. But suddenly there's an appetite to have coitus at 2 am in the morning.

What to do? You die in despair. What to do? Just click on to Alishajoshi and choose the hot and sexy call girls you want to coitus with unlimited shot options. She'll come right at your destination. No more waiting!

 
Kolkata call girls [223.190.35.xxx] เมื่อ 6/12/2022 15:35
3013
อ้างอิง

vaperdudes
I like your all post. You have done really good work. Thank you for the information you provide, it helped me a lot. I hope to have many more entries or so from you. Very interesting blog.
<a href='https://themidpost.in/auto'>Auto News In Hindi</a>
<a href='https://themidpost.in/technology'>Tech News In Hindi</a>
Thanks For Sharing <a href='https://maps.google.mu/url?q=https://themidpost.in/'>Breaking News In Hindi</a>
 
vaperdudes [111.93.56.xxx] เมื่อ 6/12/2022 15:54
3014
อ้างอิง

Thanh
Hello There. I discovered your weblog the usage of msn. That is a really neatly written article. I'll be sure to bookmark it and return to learn more of your useful info. Thanks for the post. I will certainly return.
 
ลิงค์ที่เกี่ยวข้อง : https://lagu321z.net/mp3/dj-kentrung-full-album
Thanh [185.249.237.xxx] เมื่อ 6/12/2022 16:23
3015
อ้างอิง

Surbhi Rana
Delhi escort Alia is sure to make your heart miss a beat. As well as being a professional dancer, Surbhi Rana keeps her slender body in top form with regular visits to the gym but her energetic lifestyle doesn't stop there. Apart from Escorts in Delhi , She also has a very successful modeling career showing off the latest in luxury lingerie, and gentlemen who prefer their ladies with a fuller bust will be delighted with introduction of Alia. She has a slim and toned size 8 body, 32 D bust and sexy legs. Alia has very soft, delicate facial features with long, Brown hair. She is always immaculately presented and never steps out looking anything less than a crore. Her style is best described as feminine and chic so wherever you choose to go on a date, whether it is an intimate dinner for two followed by a few cocktails or a corporate event where there is lots of socializing going on, Delhi independent escorts will fit in well and is the perfect companion to have on your arm. Call today for the most up market Delhi escort. Surbhi Rana is quite new to Delhi escorts but provides a truly unique dating experience that gentlemen simply cannot get enough of. This bundle of power, vitality and joy has taken to professional escorting in no time at all and is set to become one of Sakshi - Delhi 's most popular Female Escorts in Delhi . Surbhi Rana success at providing something a little out of the ordinary is her willingness to please and her overall versatility when it comes to satisfying her client's requests and desires. Personal dating to PARUL is like having a huge array of companions that she can entertain and delight at their leisure ensuring that her client's pleasure is always at the forefront of her mind. She is very keen in her approach to Call Girls Service and genuinely loves every aspect of it. Wherever she goes and whatever she wears, fits in perfectly and discreetly. So don't take our word for it give us a call at Surbhi Rana - Delhi model escorts and find out for yourself what a lovely time you will have on a date with the beautiful Surbhi Rana. This is a young lady who will bring heat to any dating occasion whether it is a cozy or a loud party with a crowd of fun-loving people, Surbhi rana will prove to be a perfect selection of Delhi Female Escorts. Anyone seeking thrill and excitement will be blown away with the temptation she puts in their path. Her tantalizing looks and divine body are enough to raise the temperature of any hot blooded male but add to that her spin on a real Girlfriend Experience and the results are simply dynamite. Surbhi Rana looks can only be described as the...sexy, sultry and seductive. With a passion for sensual lingerie and trendy designer fashion Surbhi Rana pulls out all of the stops to look like crore on a date. Surbhi Rana Delhi escorts is happy to dress and behave according to her client's preference and is therefore suitable for all kinds of dates including corporate events, all night parties and exclusive fine dining. As with all of Surbhi Rana - Delhi 's luxury escorts, Surbhi Rana knows how to please. An incredible GFE.
 
ลิงค์ที่เกี่ยวข้อง : https://www.surbhirana.club
Surbhi Rana [132.154.37.xxx] เมื่อ 6/12/2022 16:50
3016
อ้างอิง

Lilly
ทางDooballvip ของเรามีการให้ ทีเด็ดบอล ของบอลในทุกคู่ทุกลีก
 
Lilly [185.222.243.xxx] เมื่อ 6/12/2022 16:57
3017
อ้างอิง

glimmerkajal
Beauty, together with art and taste,  CMovies is the main subject of aestheti, one of the major branches of philosophy. As a positive aesthetic value, it is contrasted with ugliness as its negaive counterpart. Along with truth and goodness it is one of the transcendentals, which are often considered the three fundamental concepts of human understanding.
 
ลิงค์ที่เกี่ยวข้อง : https://www.techreviewscorner.com/cmovies-2022-watch-full-movies-online-free-cmovieshd/
glimmerkajal [103.186.129.xxx] เมื่อ 7/12/2022 09:41
3018
อ้างอิง

sarakaurseo
One of the best things about a reliable and credible Delhi Escorts service is that they provide their clients with various options to choose the one that will be the most comfortable and beneficial for them. Most of the time, these women work as independent agents for any one or more agencies.
 
ลิงค์ที่เกี่ยวข้อง : https://www.sarakaur.com/
sarakaurseo [103.159.43.xxx] เมื่อ 7/12/2022 11:17
3019
อ้างอิง

Mehsana Escorts
Spend your precious time with your favorite gorgeous girl who can satisfy your desires with her soft body.
 
ลิงค์ที่เกี่ยวข้อง : http://www.callgirlsjaipurescorts.com/call-girls-mehsana-escorts
Mehsana Escorts [49.204.161.xxx] เมื่อ 7/12/2022 13:22
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848
ความคิดเห็นของผู้เข้าชม
ชื่อผู้แสดงความคิดเห็น :
สถานะ : รหัสผ่าน :
ลิงค์ที่เกี่ยวข้อง :
รหัสความปลอดภัย :