Oxidation behaviour of (Ni,Pt)Al coating with an in-situ formed α-W diffusion barrier: The effect of the diffusion barrier thickness

被引：3

作者：

Li, W. B. ^{[1
,2
]}

Ren, S. X.

Zhang, P. ^{[2
,3
]}

Wang, Q. W. ^{[2
,3
]}

Yang, Y. F. ^{[1
,2
,3
,4
]}

Ren, P. ^{[1
,2
,3
]}

Li, W. ^{[2
]}

机构：

[1] Power Co Ltd Res Inst, Changsha 410000, Peoples R China

[2] Jinan Univ, Inst Adv Wear & Corros Resistant & Funct Mat, Guangzhou 510632, Peoples R China

[3] Guangdong Prov Engn & Technol Res Ctr Corros Resis, Guangzhou 510632, Peoples R China

[4] Jinan Univ, Shaoguan Res Inst, Shaoguan 512029, Peoples R China

来源：

SURFACE & COATINGS TECHNOLOGY | 2023年 / 474卷

关键词：

Diffusion barrier; Platinum; Bond coat; Inter-diffusion; Oxidation; MODIFIED ALUMINIDE COATINGS; SINGLE-CRYSTAL SUPERALLOY; BASE; MICROSTRUCTURE; RE; RESISTANCE; PHASE; FILMS; TA;

D O I：

10.1016/j.surfcoat.2023.130052

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

(Ni,Pt)Al coating with varying thicknesses of alpha-W-based diffusion barrier (DB) were prepared by adding various thicknesses of Ni-W plating layer. The oxidation performance of the DB-contained coatings was compared to that of the normal (Ni,Pt)Al coating at 1100 degrees C. With the thicker of DB, the inter-diffusion of Ni, Al as well as the refractory elements was more effectively inhibited. Moreover, better oxidation resistance was observed on (Ni, Pt)Al coating with a thicker DB, exhibiting a lower oxidation rate, flatter surface rumpling extent and slower phase degradation rate. The effects of DB on the inter-diffusion behaviour and oxidation performance of the (Ni, Pt)Al coating are discussed, and the degradation mechanism of the DB is proposed.

引用

页数：14

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