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氮化硅陶瓷,是一种烧结时不收缩的无机材料陶瓷。氮化硅陶瓷强度很高,尤其是热压氮化硅,是世界上最坚硬的物质之一。具有高强度、低密度、耐高温等性质,SIN含量≥99.5%,抗弯强度≥820Mpa,断裂韧性7.0Mpa.m,是唯一强度高,韧性好的陶瓷材料。
Silicon nitride ceramic is an inorganic material ceramic that does not shrink during sintering. Silicon nitride ceramics have high strength, especially hot pressed silicon nitride, which is one of the hardest materials in the world. It has the properties of high strength, low density and high temperature resistance, with sin content ≥ 99.5%, bending strength ≥ 820mpa and fracture toughness of 7.0Mpa m. It is the only ceramic material with high strength and good toughness.
氮化硅陶瓷的优点:
1、热膨胀系数小,与硅极为接近;
2、耐磨性卓越,硬度仅次于金刚石;
3、韧性好;
氮化硅陶瓷的性能指标如下:
氮化硅陶瓷的优点:
1、热膨胀系数小,与硅极为接近;
2、耐磨性卓越,硬度仅次于金刚石;
3、韧性好;
氮化硅陶瓷的性能指标如下:
物理性能(Physical PropertIes) | 单位 UNIT | 西安中威(ZHWE)氮化硅 |
碳化硅含量(Composition :SIC) | VOL% | ≥99.5 |
密度20℃(Density 20℃) | g/cm3 | ≥3.2 |
气孔率(Open Porosity) | VOL% | 0 |
洛氏硬度 | R45N | 95 |
维氏硬度 | kg/mm2 | 2450 |
抗弯强度20℃(Flexural Strength 20℃) | MPa | 820 |
抗弯强度1300℃(Flexural Strength 1300℃) | MPa | 820 |
热膨胀系数(Coefficient of thermal ) | 10(-6)*k(-1) | 3.0--3.2 |
热导率20℃(Thermal conductivity 20℃) | W.m(-1)*k(-1) | 15-20 |
热震性能 | ||
电阻率 | 10(18) |
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