สถิติ
เปิดเมื่อ28/01/2015
อัพเดท19/06/2024
ผู้เข้าชม2219160
แสดงหน้า2731889
ปฎิทิน
November 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
สมาชิก

สมัครสมาชิก | ลืมรหัสผ่าน

ทังสเตนคาร์ไบด์

อ่าน 743795 | ตอบ 8448
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 :
5188
อ้างอิง

스포츠토토
Superb post. I was always checking this blog, as well as I'm satisfied! Exceptionally beneficial information particularly the last part, I care for such information a great deal. I was exploring this particular details for a very long time. Many thanks to this blog site my expedition has ended. I have read the post, you have mentioned about software which i found interesting to read.I have visited different websites but this is the best so far. this is really nice to read..informative post is very good to read..thanks a lot! I have read your article. It was extremely valuable for me.

스포츠토토
 
스포츠토토 [182.182.57.xxx] เมื่อ 3/07/2023 13:57
5189
อ้างอิง

Karol Bagh Escorts

Is it true that you are a traveler naturally? Are you a fan of adventures? Do you appreciate sexual undertakings? If so, you've come to the right place. You can rely on our Karol Bagh Escorts for assistance in your sexual pursuits. They will not only make you happy sexually but also assist you in discovering the sexual realms that are hidden within you. Although most of us have had sex at some point in our lives, very few of us have gone down the lesser-known sexual paths. There is a possibility that we will attain sexual salvation if we are able to uncover those occluded sexual pathways. You can also visit our Independent Karol Bagh Escorts Service to get there. They will help you in a variety of ways to reach the pinnacle of your sexuality. They accomplish this very successfully; They also know exactly how to do it. Thus, if you need to observe sexual salvation inside you, you can come to us whenever you need. We can assist you with this.

Karol Bagh Escorts | Escorts in Karol Bagh | Karol Bagh Escorts Service | Escort Service in Karol Bagh

Karol Bagh Escorts | Escorts in Karol Bagh | Karol Bagh Escorts Service | Escort Service in Karol Bagh

Karol Bagh Escorts | Escorts in Karol Bagh | Karol Bagh Escorts Service | Escort Service in Karol Bagh

Karol Bagh Escorts | Escorts in Karol Bagh | Karol Bagh Escorts Service | Escort Service in Karol Bagh

 
Karol Bagh Escorts [103.176.16.xxx] เมื่อ 3/07/2023 14:12
5190
อ้างอิง

토토
what i don't comprehended is as a standard rule the way you are not clearly lots more all around preferred than you'll be at the prevailing time. You are clever. You see consequently basically concerning the matter of this concern, created me as i'd see it agree with it's whatever however a ton of shifted factors. Its like women and men aren't included except if it is something to acquire with girl crazy! Your man or woman stuffs superb. All of the time handle it up! What is up it's me, i'm moreover travelling this page on an regular trying to mention thank you will not just be sufficient, for the stunning readability for your article. i can in reality get your rss to stay instructed with appreciate to any updates. superb work and much fulfillment on your commercial enterprise tries .
토토
 
토토 [182.182.54.xxx] เมื่อ 3/07/2023 14:16
5191
อ้างอิง

토토
what i don't comprehended is as a standard rule the way you are not clearly lots more all around preferred than you'll be at the prevailing time. You are clever. You see consequently basically concerning the matter of this concern, created me as i'd see it agree with it's whatever however a ton of shifted factors. Its like women and men aren't included except if it is something to acquire with girl crazy! Your man or woman stuffs superb. All of the time handle it up! What is up it's me, i'm moreover travelling this page on an regular trying to mention thank you will not just be sufficient, for the stunning readability for your article. i can in reality get your rss to stay instructed with appreciate to any updates. superb work and much fulfillment on your commercial enterprise tries .
토토
 
토토 [182.182.54.xxx] เมื่อ 3/07/2023 14:17
5192
อ้างอิง

토토사이트
This is an awesome motivating article.I am practically satisfied with your great work.You put truly extremely supportive data. Keep it up. Continue blogging. Hoping to perusing your next post . Really appreciate this wonderful post that you have provided for us.Great site and a great topic as well i really get amazed to read this. Its really good. Without fail, your writing style is top professional; even your website also looks amazing thank you for posting. Good post. I learn something totally new and challenging on websites I stumble upon everyday.
토토사이트
 
ลิงค์ที่เกี่ยวข้อง : https://todongsan.com/
토토사이트 [182.182.45.xxx] เมื่อ 3/07/2023 14:18
5193
อ้างอิง

chang lotto
chang lotto Website to buy lottery tickets, dnabet, the most stable financial lottery website in Thailand
 
chang lotto [104.28.214.xxx] เมื่อ 3/07/2023 15:14
5194
อ้างอิง

xcvxcv
All of the time take care of it up! What's taking spot i am new to this, i coincidentally determined this i've determined it definitely accommodating 
안전지대 토토
 
xcvxcv [182.182.49.xxx] เมื่อ 3/07/2023 15:20
5195
อ้างอิง

온라인카지노
Hope more humans will study this text!!! Thank you for a very interesting blog. What else may also i get that type of info written in this sort of ideal technique? I’ve a task that i am simply now working on, and i have been at the appearance out for such information. Terrific articles and tremendous layout. Your weblog submit merits all of the positive feedback it’s been getting. That is a gorgeous put up i visible because of provide it. It's miles really what i anticipated to see agree with in future you'll maintain in sharing this type of thoughts boggling publish
온라인카지노
 
ลิงค์ที่เกี่ยวข้อง : https://shopthehotdeals.com/
온라인카지노 [182.182.45.xxx] เมื่อ 3/07/2023 16:07
5196
อ้างอิง

เพื่อนบาคาร่า
Perhaps you may write next articles referring to this article. I want to study extra matters about it! I have bookmarked your website due to the fact this website online contains valuable records in it. I'm clearly happy with articles first-rate and presentation. Thanks lots for retaining high-quality stuff. I am very a lot thankful for this web site. I have been searching to discover a consolation or effective system to finish this procedure and i suppose that is the maximum suitable way to do it correctly. I am truely playing analyzing your nicely written articles. It looks like you spend a number of effort and time for your weblog. I have bookmarked it and i am searching forward to studying new articles. Maintain up the best paintings. Thank you for posting this data. I simply want to can help you realize that i just check out your website online and i locate it very thrilling and informative. I can't wait to study plenty of your posts.
เพื่อนบาคาร่า
 
เพื่อนบาคาร่า [182.182.57.xxx] เมื่อ 3/07/2023 16:40
5197
อ้างอิง

먹튀검증프렌즈 검증업체
I suppose that is an enlightening put up and it is extraordinarily useful and educated. On this manner, i might need to thank you for the endeavors you have got made in composing this text. Very thrilling, correct task and thanks for sharing this kind of suitable blog. Your article is so convincing that i by no means prevent myself to say some thing about it. You’re doing a tremendous task. Preserve it up. Your net log isn't always simply useful but it's far moreover sincerely modern as nicely. There will be inclined to be tremendously few individuals who can undoubtedly compose now not all that honest posts that masterfully.. 먹튀검증프렌즈 검증업체

 
먹튀검증프렌즈 검증업체 [182.182.104.xxx] เมื่อ 3/07/2023 16:42
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846
ความคิดเห็นของผู้เข้าชม
ชื่อผู้แสดงความคิดเห็น :
สถานะ : รหัสผ่าน :
ลิงค์ที่เกี่ยวข้อง :
รหัสความปลอดภัย :