A model for designing functionally gradient ceramic tool materials with symmetrical composition distribution is presented.

提出了对称型双向分布的梯度功能陶瓷刀具材料的设计模型。

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The method of improving the thermal shock resistance of ceramic tool materials i. e. using functionally gradient ceramic tool materials, is discussed and verified by intermittent turning tests.

讨论了提高陶瓷刀具材料抗热震性的方法即采用梯度功能陶瓷刀具材料，并结合断续车削试验进行了验证。

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