สถิติ
เปิดเมื่อ28/01/2015
อัพเดท19/06/2024
ผู้เข้าชม2284556
แสดงหน้า2803957
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 771577 | ตอบ 8487
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 :
3050
อ้างอิง

James
 
ลิงค์ที่เกี่ยวข้อง : https://.mynicecars.com/
James [106.66.10.xxx] เมื่อ 11/12/2022 20:18
3051
อ้างอิง

Sophia Taylor
I would like to thank you for the efforts you have made in writing this article. Are you in a casual relationship and want to know some advice for relationships? If yes, then refer to the blog about the rice purity test. Here mention all the needy points to build romance in your relationship. For more info, visit here.
 
Sophia Taylor [117.201.230.xxx] เมื่อ 12/12/2022 13:55
3052
อ้างอิง

songdanhatnam
Công ty Cổ phần Tập đoàn Sông Đà Nhật Nam phát triển dựa vào lĩnh vực kinh doanh đầu tư Bất động sản nhằm mang lại giá trị cao cho khách hàng. Website: songdanhatnam.com
 
songdanhatnam [171.226.227.xxx] เมื่อ 12/12/2022 15:24
3053
อ้างอิง

Melody
Hi there, I read your blog regularly. Your humoristic style is witty, keep doing what you're doing!
 
ลิงค์ที่เกี่ยวข้อง : https://kedmnx.estranky.sk/clanky/online-medicine-tablets-shopping-the-best-manner.html
Melody [37.139.53.xxx] เมื่อ 12/12/2022 17:35
3054
อ้างอิง

Patiala Escorts
☺ Kannur Escorts☺☺ Kanpur Escorts☺☺ Kapurthala Escorts☺☺ Kargil Escorts☺☺ Karnal Escorts☺☺ Katni Escorts☺☺ Kheda Escorts☺☺ Kinnaur Escorts☺☺ Kishanganj Escorts☺☺ Kishangarh Escorts☺☺ Kohima Escorts☺☺ Kolar Escorts☺☺ Kolhapur Escorts☺☺ Kolkata Escorts☺☺ Koppal Escorts☺☺ Kota Escorts☺☺ Kottayam Escorts☺☺ Krishna Escorts☺☺ Kulgam Escorts☺☺ Kullu Escorts☺☺ Kutch Escorts☺☺ Lahaul Escorts☺☺ Lakhimpur Escorts☺☺ Lakhisarai Escorts☺☺ Latur Escorts☺☺ Lucknow Escorts☺☺ Ludhiana Escorts☺☺ Madhubani Escorts☺☺ Madurai Escorts☺☺ Mahisagar Escorts☺☺ Mandi Escorts☺☺ Mandya Escorts☺☺ Margao Escorts☺☺ Mathura Escorts☺☺ Mau Escorts☺☺ Mayurbhanj Escorts☺☺ Meerut Escorts☺☺ Mehsana Escorts☺☺ Mirzapur Escorts☺☺ Moga Escorts☺☺ Mohali Escorts☺☺ Moradabad Escorts☺☺ Morbi Escorts☺☺ Morena Escorts☺☺ Mumbai Escorts☺☺ Murshidabad Escorts☺☺ Muzaffarnagar Escorts☺☺ Muzaffarpur Escorts☺☺ Mysuru Escorts☺☺ Nadia Escorts☺☺ Nagpur Escorts☺☺ Nainital Escorts☺☺ Nalanda Escorts☺☺ Nanded Escorts☺☺ Nandurbar Escorts☺☺ Nashik Escorts☺☺ Neemuch Escorts☺☺ Nuh Escorts☺☺ Palakkad Escorts☺☺ Panaji Escorts☺☺ Panipat Escorts☺☺ Patan Escorts☺☺ Pathankot Escorts☺☺ Patiala Escorts☺☺ Patna Escorts☺☺ Pilibhit Escorts☺☺ Portblair Escorts☺☺ Pulwama Escorts☺☺ Pune Escorts☺☺ Pushkar Escorts☺☺ Raebareli Escorts
 
ลิงค์ที่เกี่ยวข้อง : http://www.callgirlsjaipurescorts.com/call-girls-patiala-escorts
Patiala Escorts [49.204.161.xxx] เมื่อ 12/12/2022 19:33
3055
อ้างอิง

Mumbai Escorts
Hi I am Anjali. An aged 22-year-old Mumbai call girl service. In Mumbai, you can meet me however you like. Our Mumbai escorts agency is very comfortable with its customers. You can reach me at any time. Mumbai escorts have taught me a lot about making people happy and content. Because I have been trained by the Escorts Agency, I am able to offer love in many ways. Salute, Boys!. I love to shop and enjoy dining in luxury hotels. I am the ideal person to spend a night with. Send me a message to make it a reality best escort in Mumbai.

 
 
ลิงค์ที่เกี่ยวข้อง : https://www.a1sexygirls.com/
Mumbai Escorts [118.179.37.xxx] เมื่อ 12/12/2022 22:05
3056
อ้างอิง

AJAX
This website has some content that is deserving of being brought to your attention. Thanks from Be Problem Solver.
 
AJAX [146.196.32.xxx] เมื่อ 13/12/2022 12:31
3057
อ้างอิง

LOVELY

                      CHIEF ESCORT AHMEDABAB

<a href='https://www.aditipatelescort.com/'>Escort Ahmedabad</a>
<a href='https://www.aditipatelescort.com/'>Escort in Ahmedabad</a>
 
LOVELY [103.81.92.xxx] เมื่อ 13/12/2022 14:06
3058
อ้างอิง

เกมส์ออนไลน์ pg slot
เกมส์ออนไลน์ pg slot เกมสล็อตออนไลน์ ที่สมัคร กล้วยๆเพียงแต่ PG SLOT ใช้เวลาไม่ถึง 5 นาที สามารถสมัครเป็นสมาชิก กับพวกเราได้โดยทันทีเมื่อลงทะเบียน เป็นสมาชิกในช่วงเวลานี้
 
เกมส์ออนไลน์ pg slot [138.199.22.xxx] เมื่อ 13/12/2022 14:31
3059
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 Kolkatagirl 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 [182.64.33.xxx] เมื่อ 13/12/2022 15:46
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850
ความคิดเห็นของผู้เข้าชม
ชื่อผู้แสดงความคิดเห็น :
สถานะ : รหัสผ่าน :
ลิงค์ที่เกี่ยวข้อง :
รหัสความปลอดภัย :