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碳化铪

  • 英文名:
  • Hafnium carbide
  • 别名:
  • CAS号:
  • 12069-85-1
  • 分子式:
  • Hfc
  • 分子量:
  • 190.5
  • MDL:
  • MFCD00016126
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质检证书(CoA)

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    • 介绍: 铪和碳的化合物为主要成分的陶瓷。碳化铪(HfC)是已知单一化合物中熔点最高者。体积电阻率1.95×10-4Ω·cm(2900℃),热膨胀系数6.73×10-6/℃。通常用二氧化铪(HfO2)与碳在惰性或还原性,反应温度1900~2300℃,用热压烧结法或热等静压法制出高密度陶瓷甜品。碳化铪能与许多化合物(如ZrC、TaC等)形成固溶体。如组分为HfC-4TaC的复合碳化物,其显微结构呈二相:一相为碳化铪-碳化钽的共晶体;另一相为外形比是50:1的针状的游离石墨相。这种“近共晶”碳化铪(HfC)制品具有良好
    • 熔点: 3890°C
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