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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
 
 
 
 
 
 
 
 
 
 
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 :
11186
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stitch
สล็อตเว็บตรง รวมนานาสารพัดความมันส์สุดขีด nine slot เว็บตรง ไม่ผ่านเอเย่นต์ แหล่งรวมสุดยอดค่ายเกมสล็อต เกมสล็อตแตกง่าย 2026 สมัครสมาชิก เข้าทดลองเล่นเกมสล็อตได้ทุกรูปแบบ สนุกเพลินตลอด 24 ชั่วโมง
 
stitch [136.144.33.xxx] เมื่อ 20/02/2026 13:17
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การเลือกเดิมพันได้หลากหลายรูปแบบ ทดลองเล่น บาคาร่า จัดเต็มด้วยเงินรางวัลก้อนโตพิเศษอีกเพียบ เข้าเล่นสล็อตเว็บตรง สล็อตออนไลน์ อัพเดตใหม่ล่าสุด 2026 เป็นอีกหนึ่งหนทางสู่ความรวย สมัครวันนี้ รับสิทธิประโยชน์เพียบ
 
stitch [136.144.33.xxx] เมื่อ 20/02/2026 13:18
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มือใหม่สายเดิมพัน แนะสมัครสมาชิกใหม่ กับเว็บตรง สล็อต ทดลองเล่นฟรี ทุกค่าย สล็อตเว็บตรง คลิกเดียวไม่ต้องดาวน์โหลดหนึ่งใยทางเลือกใหม่ สำหรับการเดิมพันเกมสล็อตออนไลน์ เชิญร่วมสนุกพร้อมสร้างรายได้ง่ายๆ ที่นี่ที่เดียว
 
stitch [136.144.33.xxx] เมื่อ 20/02/2026 13:18
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สมัครสมาชิก รับสิทธิ์พร้อมโปรโมชั่นฮิตๆ เพียบ ทดลองเล่นสล็อตamb เลือกสมัครกับสล็อตเว็บตรง เราจะทำให้นักเล่นทุกท่านได้เข้าถึงโลกแห่งการเดิมพัน การแข่งขันที่มีการพัฒนาตัวอยู่เสมอ สล็อตแตกง่าย กำไรได้มากกว่าเดิม
 
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salmakhatun [223.235.100.xxx] เมื่อ 20/02/2026 21:28
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