کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1670168 | 1008896 | 2008 | 7 صفحه PDF | دانلود رایگان |

The effect of the Pt content on the durability of thermal barrier coatings (TBCs) with a Pt-enriched γ + γ′ bond coat was investigated. It was found that the TBCs with a higher Pt content exhibit a significantly longer isothermal life than those with a lower Pt content. The subsequent analysis indicated that the Pt content has only a negligible effect both on the stresses in the thermally-grown oxide (TGO) and the elastic properties of the bond coat, but has a significant effect on the interfacial chemistry. During oxidation, impurities such as S, C and refractory elements segregating to the interface would degrade the TGO adherence to the bond coat. However, a higher content of Pt can inhibit this segregation, and thus improve the TBCs life.
Journal: Thin Solid Films - Volume 517, Issue 2, 28 November 2008, Pages 828–834