ทังสเตนคาร์ไบด์

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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

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Kurlov, p. 22
Blau, Peter J. (2003). Wear of Materials. Elsevier. p. 1345. ISBN 978-0-08-044301-0.
Pierson, Hugh O. (1992). Handbook of Chemical Vapor Deposition (CVD): Principles, Technology, and Applications. William Andrew Inc. ISBN 0-8155-1300-3.
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.
Groover, Mikell P. (2010). Fundamentals of Modern Manufacturing: Materials, Processes, and Systems. John Wiley & Sons. p. 135. ISBN 978-0-470-46700-8.
Kurlov, p. 3
Cardarelli, François (2008). Materials Handbook: A Concise Desktop Reference. Springer Science & Business Media. pp. 640–. ISBN 978-1-84628-669-8.
Kurlov, pp. 30, 135
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.
12th Report on Carcinogens'. National Toxicology Program. http://ntp.niehs.nih.gov/go/roc12. เรียกข้อมูลเมื่อ 2011-06-24.

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Orson Davies	http://ofbiz.116.s1.nabble.com/ww88exposed-tp4812153p4941937.html https://pastelink.net/xqiqgvb2 https://healingxchange.ning.com/profiles/blogs/theknowledgeblog01 https://sym-bio.jpn.org/nuclearinfo/webtext/index.php?theknowledgeblog01 https://md.openbikesensor.org/s/WzrBQtx4X https://md.inno3.fr/s/rGM2zTK57 https://pad.funkwhale.audio/s/iSmzE0_kG https://mlx.su/paste/view/70f7024c https://www.mexicanmadness.com/group/mysite-231-group/discussion/ef0335a9-91be-4ab8-b263-d1605a495c… https://www.mnmrok.catholic.edu.au/post/newsletter-term-1-week-9?commentId=3ee9fd68-0626-4ddf-a0c7-… https://www.usfencounter.stfrancis.edu/post/clare-s-garden-closed-quest-reveals-new-initiatives?com… https://crc.cnlu.ac.in/post/legal-rights-of-orphan-children-in-india-pritha-ayush?commentId=fceaf3a… https://eobicho.viana.es.gov.br/post/ado%C3%A7%C3%A3o?commentId=b2400222-8e7f-4e1f-b2fa-8f82520bb968 https://www.mnmrok.catholic.edu.au/post/newsletter-term-1-week-9?commentId=3ee9fd68-0626-4ddf-a0c7-…
	Orson Davies [157.66.153.xxx] เมื่อ 3/11/2025 23:31

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