论文部分内容阅读
本文研究的是一种新型材料——“倾斜功能材料”。在一定实验的基础上利用等离子喷涂法成功地制造了7层过渡的Ni基合金—ZrO_2.Y_2O_8倾斜功能材料,其抗热震性能领先于现有文献报道的同类方法制造的倾斜功能材料。同时,本文利用X射线法对ZrO_2·Y_2O_8涂层的残余应力进行了测量,这也是一种新的探索;实验过程中对本文中的两类试样进行了真空热处理及抗热震性实验。实验结果表明,陶瓷涂层中存在着大的应力梯度并随基体温度的提高,ZrO_2.Y_2O_2涂层中残余压应力的趋势增大;对于倾斜功能材料试样,随着过渡层数的增加,材料抗热震性明显增加,并且经过真空热处理后,材料的抗热震性明显提高。
This paper studies a new type of material - “tilt function material.” On the basis of a certain experiment, 7 layers of transitional Ni-based alloy-ZrO_2.Y_2O_8 tilting functional materials were successfully fabricated by plasma spraying, and their thermal shock resistance is superior to that of the tilting functional materials produced by similar methods reported in the literature. In the meantime, X-ray method was used to measure the residual stress of ZrO_2 · Y_2O_8 coating, which is also a new exploration. During the experiment, two kinds of samples in this paper were vacuum heat-treated and thermal shock resistance experiment. The experimental results show that there is a large stress gradient in the ceramic coating and the trend of residual compressive stress in the ZrO_2.Y_2O_2 coating increases with the increase of the substrate temperature. With the increase of the number of transitional layers, The thermal shock resistance of the material is obviously increased, and the thermal shock resistance of the material is obviously improved after the vacuum heat treatment.