| 论文题目 | Thermal shock behavior of YSZ thermal barrier coatings with a Ni-P/Al/Ni-P sandwich interlayer on AZ91D magnesium alloy substrate at 400 degrees C |
| 作 者 | ; Shan Yang,Jiagen Shen, Xiaolong Cai, Ying Wang, Xueqiang Cao,Binglin Zou*, Ling Zhu* |
| 发表年度 | JUN 15 2019 |
| 刊物名称 | SURFACE & COATINGS TECHNOLOGY |
| 卷、期、页码 | 367; ; 278-287 |
| 影响因子 | |
| 论文摘要 | Thermal barrier coatings (TBCs) consisting of yttria-stabilized zirconia (YSZ) as top coat and NiCrAIY as bond coat were deposited on AZ91D magnesium alloy substrate by atmospheric plasma spraying (APS). In order to improve the stability and prolong the thermal shock life of TBCs, a Ni-P/Al/Ni-P sandwich interlayer between the AZ91D magnesium alloy substrate and the NiCrAlY bond coat was fabricated by electroless plating for Ni-P layer and APS for Al layer. The thermal shock behavior of the YSZ TBCs with the Ni-P/Al/Ni-P sandwich interlayer quenched in water at 400 degrees C was investigated in detail. The results showed that the thermal shock life of YSZ TBCs with the Ni-P/Al/Ni-P interlayer on the AZ91D substrate was about 226 cycles. The failure of YSZ TBCs in thermal shock test was mainly induced by the corrosion of AZ91D substrate. The results of polarization tests and electrochemical impedance spectroscopy showed that the Ni-P/Al/Ni-P interlayer had better corrosion protection for the magnesium alloy substrate than the Ni-P interlayer, which thus enhanced the thermal shock life nearly two times as compared to that of YSZ TBCs with the Ni-P interlayer. |
| 全文链接 | https://www.sciencedirect.com/science/article/pii/S0257897219303172?via%3Dihub |
| 附件地址 |
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