INFLUENCE OF GRAIN-SIZE ON EFFECTS OF THERMAL-EXPANSION ANISOTROPY IN MGTI2O5
INFLUENCE OF GRAIN-SIZE ON EFFECTS OF THERMAL-EXPANSION ANISOTROPY IN MGTI2O5
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DOI：
10.1111/j.1151-2916.1973.tb12714.x
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发表时间：
1973-01-01
影响因子：
3.9
通讯作者：
BRADT, RC
中科院分区：
文献类型：
--
作者：
KUSZYK, JA;BRADT, RC
与热膨胀各向异性影响相关的性能被测量为热压致密 MgTi2O5 晶粒尺寸的函数。晶粒小于~3μm的样品没有表现出由于热膨胀各向异性引起的微裂纹，而晶粒较大的样品则具有所有特征。提出了能量准则来解释晶粒尺寸对表现出高度热膨胀各向异性的陶瓷中微裂纹的影响。
Properties relating to the effects of thermal expansion anisotropy were measured as functions of grain size in hot‐pressed dense MgTi2O5. Samples with grains smaller than ∼3 μm exhibited none of the microcracking attributed to thermal expansion anisotropy, whereas those with larger grains had all the characteristics. An energy criterion is proposed to explain the grain‐size effect on microcracking in ceramics exhibiting high degrees of thermal expansion anisotropy.