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氮化硅

  • 英文名:
  • Silicon nitride
  • 别名:
  • 四氮化三硅
  • CAS号:
  • 12033-89-5
  • 分子式:
  • N4Si3
  • 分子量:
  • 140.28
  • MDL:
  • MFCD00011230
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    • 介绍: 有α-和β-两种晶体。溶于氢氟酸。不溶于水。为共价键化合物,结合非常稳定。在空气中被加热至1450~1550℃时仍稳定。强度高。硬度大。硅粉在氮气氛中于高温下制得。也可由卤化硅与氨气经二氧化碳气激光束照射,生成无定形氮化硅,再在1450℃电炉、氮气氛中加热制得高纯度氮化硅粉末。
    • 熔点: 1900°C
    • 用途: 主要用作功能陶瓷材料原料,非铁金属的耐熔材料,飞机引擎,燃气输机喷嘴、轴承等高温结构材料和耐热涂层以及研磨、切削、电炉等的材料。
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