The al-enriched γ′-Ni3Al-base bond coat for thermal barrier coating applications

被引：21

作者：

Liu, Chen ^{[1
]}

Chen, Ying ^{[1
]}

Qiu, Lin ^{[1
]}

Liu, Han ^{[1
]}

Bai, Mingwen ^{[2
]}

Xiao, Ping ^{[1
]}

机构：

[1] Univ Manchester, Dept Mat, Manchester M13 9PL, Lancs, England

[2] Univ Sheffield, Dept Mat, Sheffield S1 3JD, S Yorkshire, England

来源：

CORROSION SCIENCE | 2020年 / 167卷

基金：

英国工程与自然科学研究理事会;

关键词：

metal coatings; thermal cycling; Raman spectroscopy; Oxide coatings; oxidation; OXIDATION BEHAVIOR; CYCLIC OXIDATION; NI; PLATINUM; GAMMA; INTERDIFFUSION; SYSTEMS; MECHANISM; ALLOYS; DEGRADATION;

D O I：

10.1016/j.corsci.2020.108523

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new Al-enriched gamma'-Ni3Al bond coat was developed and its oxidation behaviour was examined and compared to that of conventional Pt-diffused gamma/gamma' coatings and beta-NiPtAl coatings. This gamma'-Ni3Al coating exhibited significantly reduced elemental interdiffusion with the substrate during oxidation compared to two conventional coatings. Although Al-enriched gamma'-Ni3Al coatings presented faster thermal grown oxide (TGO) growth than the beta-NiPtAl coating, it outperformed beta-NiPtAl coatings regarding the rumpling resistance during cycling. The Al-enriched gamma'-Ni3Al coating also exhibited superior TGO spallation resistance compared to Pt-diffused gamma/gamma' coatings. The mechanisms for the reduced interdiffusion and good rumpling resistance of this gamma'-Ni3Al coating are addressed.

引用

页数：16

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