สถิติ
เปิดเมื่อ28/01/2015
อัพเดท22/05/2024
ผู้เข้าชม1773778
แสดงหน้า2238683
ปฎิทิน
May 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 539684 | ตอบ 7811
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 :
3680
อ้างอิง

안전지대 토토
At the point when I initially left a remark I seem to have tapped on the - Notify me when new remarks are added-checkbox and now each time a remark is added I get four messages with precisely the same remark. Maybe there is a simple technique you can eliminate me from that assistance? Much obliged! What I don't comprehended is indeed how you are not in reality much more cleverly liked than you might be currently. You are savvy. You see subsequently extensively as far as this subject, created me in my view envision it's anything but a ton of different points. Its like ladies and men aren't included except if it's one thing to do with Girl crazy! Your own stuffs brilliant. All the time manage it up!
안전지대 토토
 
안전지대 토토 [182.182.71.xxx] เมื่อ 27/02/2023 17:53
3681
อ้างอิง

토토지존
Excellent read, Positive site, where did u come up with the information on this posting?I have read a few of the articles on your website now, and I really like your style. Thanks a million and please keep up the effective work. An interesting dialogue is price comment. I feel that it is best to write more on this matter, it may not be a taboo topic however usually individuals are not enough to talk on such topics. To the next. Cheers. You possess lifted an essential offspring..Blesss for using..I would want to study better latest transactions from this blog..preserve posting. Your blogs further more each else volume is so entertaining further serviceable It appoints me befall retreat encore. I will instantly grab your rss feed to stay informed of any updates.
토토지존
 
ลิงค์ที่เกี่ยวข้อง : https://fortunetelleroracle.com/local-business/totojijon-635320
토토지존 [182.182.120.xxx] เมื่อ 27/02/2023 18:26
3682
อ้างอิง

토토지존
Excellent read, Positive site, where did u come up with the information on this posting?I have read a few of the articles on your website now, and I really like your style. Thanks a million and please keep up the effective work. An interesting dialogue is price comment. I feel that it is best to write more on this matter, it may not be a taboo topic however usually individuals are not enough to talk on such topics. To the next. Cheers. You possess lifted an essential offspring..Blesss for using..I would want to study better latest transactions from this blog..preserve posting. Your blogs further more each else volume is so entertaining further serviceable It appoints me befall retreat encore. I will instantly grab your rss feed to stay informed of any updates.
토토지존
 
ลิงค์ที่เกี่ยวข้อง : https://fortunetelleroracle.com/local-business/totojijon-635320
토토지존 [182.182.120.xxx] เมื่อ 27/02/2023 18:28
3683
อ้างอิง

sdfsdf
i am for the first time here. I found this board and I in finding It truly helpful & it helped me out a lot. I hope to present something back and help otn the future as well. In fact your creative writing abilities has inspired me to start my own Blog Engine blog now. Really the blogging is spreading its wings rapidly.
토토안전나라
 
ลิงค์ที่เกี่ยวข้อง : https://www.homify.co.kr/ideabooks/9036883/%EC%98%A8%EB%9D%BC%EC%9D%B8-%EC%B9%B4%EC%A7%80%EB%85%B8%EC%99%80-%EC%8B%9C%EC%8A%A4%ED%85%9C-%EC%8B%A0%ED%99%94
sdfsdf [182.182.120.xxx] เมื่อ 27/02/2023 18:29
3684
อ้างอิง

토토궁
Wow, What is Wonderful Article.n. Very good work! 토토궁

 
ลิงค์ที่เกี่ยวข้อง : https://picgiraffe.com/%ec%ba%90%eb%82%98%eb%8b%a4-%ec%b9%b4%ec%a7%80%eb%85%b8/?snax_post_submission=success
토토궁 [182.182.120.xxx] เมื่อ 27/02/2023 18:54
3685
อ้างอิง

토토
I am usually to blogging i genuinely appreciate your content. Your content has really peaks my interest. I will bookmark your site and maintain checking for new info. Cool post. There’s an issue with your site in chrome, and you may want to test this… The browser is the marketplace chief and a good element of people will omit your excellent writing because of this problem. This is very educational content and written well for a change. It's nice to see that some people still understand how to write a quality post.! Hey there, You have done an excellent job. I’ll definitely digg it and personally recommend to my friends. I’m confident they’ll be benefited from this website. this can be awesome plus meanful. this can be interesting site. Leading is rather handy element. you may have seriously made it simpler for many people who seem to take a look at site and give these folks usefull information and facts.
토토
 
토토 [182.182.104.xxx] เมื่อ 27/02/2023 19:29
3686
อ้างอิง

모두의토토
Pretty component of substance. I essentially found ? you make publishing content to a blog look simple. The whole look of your site is incredible, as intelligently as the substance! This is an extraordinary blog. I'm truly happy I have discovered this data.

모두의토토
 
모두의토토 [182.182.104.xxx] เมื่อ 27/02/2023 19:52
3686
อ้างอิง

모두의토토
Pretty component of substance. I essentially found ? you make publishing content to a blog look simple. The whole look of your site is incredible, as intelligently as the substance! This is an extraordinary blog. I'm truly happy I have discovered this data.

모두의토토
 
모두의토토 [182.182.104.xxx] เมื่อ 27/02/2023 19:52
3687
อ้างอิง

토토하이
I read the article, this is awesome. Keep updating interesting articles. I am offering statistics assignment help, economics assignment help and finance assignment help to students over the globe at very affordable prices . Superb article. a debt of gratitude is in order for assembling this! This is clearly one extraordinary post. Much obliged for the important data and bits of knowledge you have so given here. This could be one of the most useful blogs we have ever come across on thesubject. Actually excellent info! I’m also an expert in this topic so I can understand your effort. I can give you the address Here you will learn how to do it correctly. Read and write something good.
토토하이
 
토토하이 [182.182.104.xxx] เมื่อ 27/02/2023 20:23
3688
อ้างอิง

토담토담토토
Nice post. I was checking constantly this blog and I’m impressed! Extremely useful info specially the last part I care for such information a lot. I was seeking this certain info for a long time. Thank you and good luck . I’ve been surfing online more than three hours today, yet I never found any interesting article like yours. It’s pretty worth enough for me. In my opinion, if all webmasters and bloggers made good content as you did, the web will be a lot more useful than ever before. I am happy to find this post very useful for me, as it contains lot of information. I always prefer to read the quality content and this thing I found in you post. Thanks for sharing.
토담토담토토
 
토담토담토토 [182.182.82.xxx] เมื่อ 27/02/2023 20:28
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782
ความคิดเห็นของผู้เข้าชม
ชื่อผู้แสดงความคิดเห็น :
สถานะ : รหัสผ่าน :
ลิงค์ที่เกี่ยวข้อง :
รหัสความปลอดภัย :