Proceed from different heat coefficient of expansion of two different metals for thermal bimetals with dish shape, the calculation modul was given.

从碟形双金属片的两块不同金属的热膨胀系数出发，设计了计算模型。

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If there is a large difference in the coefficient of expansion, there will be cracks in the ceramic layer or the phenomenon of exploding porcelain in the alternating heat and cold.

如果膨胀系数相差较大，在冷热交替的时候就会出现瓷层裂纹或爆瓷现象。

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Synthetic diamond is competitive in heat dispersing materials, because it has high thermal conductivity, low coefficient of thermal expansion and lower price.

人造金刚石由于其自身高的热导率、低的热膨胀系数和相对低的价格已成为制造新型散热材料的研究热点。

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