Thermal shock and thermal fatigue behaviors of ZrO2-Ni functionally graded material

被引：0

作者：

Zhu, Jing-Chuan ^{[1
]}

Lai, Zhong-Hong ^{[1
]}

Yin, Zhong-Da ^{[1
]}

Li, Ming-Wei ^{[1
]}

机构：

[1] Sch. of Mat. Sci. and Eng., Harbin Inst. of Technol., Harbin 150001, China

来源：

Cailiao Kexue yu Gongyi/Material Science and Technology | 2001年 / 9卷 / 04期

关键词：

Nickel - Thermal cycling - Thermal effects - Thermodynamic properties - Zirconia;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The thermal shock and thermal fatigue behaviors as well as their controlling factors of ZrO2-Ni functionally graded material (FGM) were studied by thermal shock resistance analysis and thermal cycling tests. The results demonstrate that the distribution of thermal shock resistance in ZrO2-Ni FGM has a graded character. The thermal shock resistance is higher in zirconia-rich layers while the thermal fatigue resistance is better in nickel-rich layers of the FGM. The thermal shock fracture agrees with the mechanism of thermal fatigue damage, and is controlled by the quasi-static propagation of cracks. The thermal fatigue cracks initiate and grow in graded layers in the way of aggregation of microvoids and their connection. However, there is no crack between the graded layers, and the thermal stress induced spallation in the joint interface of conventional ceramics/metal bonding has been avoided.

引用

页码：387 / 392