材料比较表
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性质氧化铝
Al2 O3氧化锆
ZrO2碳化矽SiC氮化矽
Si3 N4赛龙Sialon碳化钨WC玻璃Glass氮化硼BN氮化铝AlN碳化硼
B4 C碳钢Steel -
密度(g/㎝3 )3.96.03.23.33.2152.52.03.22.57.8
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热传导率(W/m*°K)281.81262721631.5301604051.9
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热膨胀系数(10-6 /℃)810.142.3360.524.45.613.6
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微硬度(Kgf/㎜2 )160014002300150016001600100022012003200126
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比热(J/㎏*°K)8804007007006203907401850730930448
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弹性系数(GPa)3702004103103007007062340450200
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抗拉强度(MPa)262700400524450896-41400350520
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抗压强度(MPa)260018503900250035006100110014320702800-
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抗折强度(MPa)3806905507806005506973350400-
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破裂韧性(MPa*m0.5 )3.69.54.67.76.5251-2.63.014
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波尔松比(Poisson's ratio)0.260.230.190.240.230.180.20.130.250.150.3
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熔点或分解点(℃)20532700270019001900287022002600240024501450