Silicon nitride is an advanced ceramic material with high hardness, stable structure, small thermal expansion coefficient, excellent oxidation resistance and corrosion resistance, and excellent thermal and chemical properties.
氮化硅是一种硬度高、结构稳定、热膨胀系数小，抗氧化和抗侵蚀性能非常好的集优良热学和化学性能为一体的高级陶瓷材料。
main application:
Mainly used in metallurgical industry, mechanical industry, chemical industry, semiconductor, aviation, atomic energy and other industries, medical artificial joints, and all-ceramic engines.
主要用途：
主要用于冶金工业，机械工业，化学工业，半导体，航空，原子能等工业，医学人工关节，全陶瓷发动机。
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项 目
Item
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氮化硅
(α-Si3N4)
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氮化硅
(β-Si3N4)
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纳米氮化硅
Nano-Si3N4
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相含量（%） phase content
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α>93%
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β>95%
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非晶
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化学成分
chemical
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N(wt%)
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38.5
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38.5
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38.5
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O(wt%)
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1.25
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1.25
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1.25
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C(wt%)
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0.2
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0.2
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0.2
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Fe(ppm)
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<100
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<100
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<100
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Al(ppm)
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<50
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<50
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<50
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Ca(ppm)
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<50
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<50
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<50
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纯 度（%）purity
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99.9%
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99.9%
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99%
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粒 度(μm) size
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0.6um
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1-3um
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25nm
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