สถิติ
เปิดเมื่อ28/01/2015
อัพเดท19/06/2024
ผู้เข้าชม2284139
แสดงหน้า2803531
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 771174 | 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 :
2670
อ้างอิง

메이저놀이터
Thank you for your own efforts on this blog. Gloria take interest in managing investigations and it is easy to see why. Most of us hear all about the dynamic way you present priceless suggestions through this web blog and in addition improve contribution from others on that subject matter plus our own simple princess is undoubtedly discovering a lot of things. Have fun with the rest of the new year. You have been conducting a brilliant job. I happen to be writing to let you know of the brilliant discovery my friend’s girl developed browsing yuor web blog. She came to understand many issues, not to mention what it’s like to have a great giving mindset to have certain people smoothly grasp certain tortuous things. You really did more than readers’ expectations. Thanks for giving those precious, trusted, edifying and unique thoughts on the topic to Mary. I have to point out my respect for your kind-heartedness giving support to persons who need assistance with in this idea. Your very own commitment to passing the message throughout was especially important and has specifically empowered associates like me to reach their objectives. Your own useful recommendations can mean much to me and even further to my mates. With thanks; from each one of us.major playground

 
ลิงค์ที่เกี่ยวข้อง : https://www.safezonetoto.com/
메이저놀이터 [182.182.16.xxx] เมื่อ 12/10/2022 14:18
2671
อ้างอิง

메이저놀이터모음
I and also my friends ended up following the nice thoughts from the blog and so quickly I got a terrible feeling I never expressed respect to the web site owner for those strategies. The women were certainly warmed to read through them and now have pretty much been making the most of them. Appreciate your turning out to be well thoughtful and also for selecting certain important issues most people are really needing to be aware of. Our own honest regret for not expressing appreciation to earlier. Needed to compose you that very little observation so as to say thanks a lot once again about the pleasing methods you have shown in this case. It was so surprisingly generous with you to offer unhampered precisely what some people would’ve sold as an electronic book to earn some profit on their own, precisely given that you could possibly have done it in case you desired. These techniques as well served like the fantastic way to realize that the rest have the identical zeal really like mine to understand a lot more pertaining to this problem. I am certain there are lots of more enjoyable sessions up front for individuals that scan your blog post.
메이저놀이터모음
 
ลิงค์ที่เกี่ยวข้อง : https://www.safezonetoto.com/majortoto/
메이저놀이터모음 [182.182.16.xxx] เมื่อ 12/10/2022 15:21
2672
อ้างอิง

카지노커뮤니티 온카
Your post is very helpful to get some effective tips to reduce weight properly. You have shared various nice photos of the same. I would like to thank you for sharing these tips. Surely I will try this at home. Keep updating more simple tips like this. Interesting topic for a blog. I have been searching the Internet for fun and came upon your website. Fabulous post. Thanks a ton for sharing your knowledge! It is great to see that some people still put in an effort into managing their websites. I'll be sure to check back again real soon.
I'm not here
 
ลิงค์ที่เกี่ยวข้อง : https://shopthehotdeals.com/onca/
카지노커뮤니티 온카 [182.182.16.xxx] เมื่อ 12/10/2022 15:48
2673
อ้างอิง

토토사이트
Best work you have done, this online website is cool with great facts and looks. I have stopped at this blog after viewing the excellent content. I will be back for more qualitative work. Great job for publishing such a beneficial web site. Your web log isn't only useful but it is additionally really creative too. There tend to be not many people who can certainly write not so simple posts that artistically. Continue the nice
토토사이트

 
ลิงค์ที่เกี่ยวข้อง : https://totositesharing.com/
토토사이트 [182.182.76.xxx] เมื่อ 12/10/2022 17:38
2674
อ้างอิง

스포츠토토
Best work you have done, this online website is cool with great facts and looks. I have stopped at this blog after viewing the excellent content. I will be back for more qualitative work. Great job for publishing such a beneficial web site. Your web log isn’t only useful but it is additionally really creative too. There tend to be not many people who can certainly write not so simple posts that artistically. Continue the nice writing


스포츠토토
 
ลิงค์ที่เกี่ยวข้อง : https://totocri2.yektablog.net/
스포츠토토 [182.182.101.xxx] เมื่อ 12/10/2022 18:07
2675
อ้างอิง

Ashika Soni
In Bangalore, the Bangalore Escort solution has really come to be one of the most amazing option which is made use of by lots of people very consistently. Bangalore Escorts remedy is actually well-known for having warm in addition to beautiful ladies. Not just the neighbourhood individuals however also the tourist are make use of the escort service to make their excursion even more pleasurable. Thus, the Bangalore call girls are constantly in high need. Escorts Bangalore are truly appealing, spectacular, and also have a hot and additionally hot number. These girls are appropriately educated, in addition to they understand simply how to give satisfaction and likewise fulfillment to their clients. It's regular if you are acquiring annoyed as a result of daily task and additionally numerous other stress. So to acquire some satisfaction in your boring life, employ warm along with sensuous Bangalore Escorts Service.
The AshikaSoni Bangalore Escort company offers high-class as well as additionally advanced Escort Call Girls to ensure that you can conveniently take her to any kind of firm class parties. Moreover, the escort women need to do a photoshoot for this work. You can examine the Bangalore call girl pictures online site as well as also shortlisted your preferred ones. You can select the stunning women personally after fulfilling them independently. Escorts in Bangalore are very seductive and also eye-catching than different other call girls. These companions can make your night one-of-a-kind, intriguing, and additionally will certainly supply you relief after returning from stressful task. Another intriguing thing is that you can take the buddy to any kind of type of resort or restaurant.
Make Your Stressful Nights Special By Bangalore Escorts Solution
Bangalore Escorts service has different type of companions from teen to mid-age variety ladies. There is likewise a massive option of homemaker friends. If you are trying to find some escorts, that can match firm training course demands, afterwards the Escort Bangalore firm will certainly be ideal for you. The elite design buddies are definitely educated for any type of sort of type of service occasions. You can additionally take the companions for a 2-3 days firm journey. It will certainly be very tough for you to stand up to the temptation after seeing our Bangalore call girls.
In some cases in our life, all we need is to have a person that can pay attention to us; Bangalore Companions will certainly furthermore satisfy this desire. Nowadays, it's rather tough to obtain a sweetheart. So, right here is our lovely along with warm buddies that will try to satisfy all your sex drive. They will certainly please you on the bed in addition to furthermore make you truly feel happy as well as likewise hassle-free. Furthermore, the Bangalore call girls will absolutely focus on all your concerns as well as will definitely make you truly feel better in bed.
Get A Special Life By Working With Bangalore Telephone Call Girls
Acquire the first-class experience from the Bangalore Escort services by employing companions from the AshikaSoni Bangalore Escorts firm. You can talk with the provided number on our website as well as obtain all the escorts' details and likewise prices. Furthermore, we also allow our depended on clients to choose the companions based on their option. In this procedure, you can rapidly do away with all your irritation in addition to depression. The Bangalore Independent Escorts will absolutely treat you like a buddy as well as likewise please you with their hot as well as additionally attractive number.
 
Ashika Soni [45.121.2.xxx] เมื่อ 12/10/2022 18:28
2676
อ้างอิง

안전놀이터
Very nice post. I just stumbled upon your blog and wanted to say that I’ve truly enjoyed surfing around your blog posts. In any case I will be subscribing to your rss feed and I hope you write again soon! Thanks for your own hard work on this web page. My mother really likes engaging in research and it is easy to understand why. Many of us learn all regarding the powerful form you deliver both useful and interesting things by means of the web site and even inspire participation from other people about this concern and my princess is discovering a whole lot. Have fun with the rest of the year. You have been performing a good job.
안전놀이터
 
ลิงค์ที่เกี่ยวข้อง : https://www.lastkingsworld.com/
안전놀이터 [182.182.101.xxx] เมื่อ 12/10/2022 18:35
2677
อ้างอิง

토토사이트추천
Hey, this day is too much good for me, since this time I am reading this enormous informative article here at my home. Thanks a lot for massive hard work. All the contents you mentioned in post is too good and can be very useful. I will keep it in mind, thanks for sharing the information keep updating, looking forward for more posts.Thanks .Please do keep up the great work. I cannot be without visiting your blog again and again.
mockup
 
ลิงค์ที่เกี่ยวข้อง : https://totohighkr.com/
토토사이트추천 [182.182.101.xxx] เมื่อ 12/10/2022 18:42
2678
อ้างอิง

안전놀이터
Wonderful article, thanks for putting this together! This is obviously one great post. Thanks for the valuable information and insights you have so provided here. Thank you for your post, I look for such article along time, today i find it finally. this post give me lots of advise it is very useful for meGreetings! Very helpful advice in this particular post! This is highly informatics, crisp and clear. I think that everything has been described in a systematic manner so that reader could get maximum information and learn many things.
 
ลิงค์ที่เกี่ยวข้อง : https://www.totomt365.com/
안전놀이터 [182.182.101.xxx] เมื่อ 12/10/2022 19:45
2679
อ้างอิง

메이저놀이터
This design is wicked! You most certainly know how to keep a reader entertained. Between your wit and your videos, I was almost moved to start my own blog (well, almost…HaHa!) Excellent job. I really loved what you had to say, and more than that, how you presented it. Too cool! I will right away take hold of your rss as I can’t find your email subscription link or e-newsletter service. Do you’ve any? Kindly permit me understand so that I may just subscribe. Thanks. I’m not sure where you are getting your information, but good topic. I needs to spend some time learning much more or understanding more. Thanks for magnificent information I was looking for this info for my mission.
major playground
 
ลิงค์ที่เกี่ยวข้อง : https://searchtoto.com/
메이저놀이터 [182.182.101.xxx] เมื่อ 12/10/2022 20:44
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850
ความคิดเห็นของผู้เข้าชม
ชื่อผู้แสดงความคิดเห็น :
สถานะ : รหัสผ่าน :
ลิงค์ที่เกี่ยวข้อง :
รหัสความปลอดภัย :