Study by complementary X-ray techniques of in-depth microstructure in Ni-based superalloys after Pt diffusion treatment

被引：13

作者：

Benoist, J

Girardeau, T

Goudeau, P

Badawi, KF

Traverse, A

机构：

[1] Univ Poitiers, CNRS, UMR 6630, Lab Met Phys, F-86962 Futuroscope, France

[2] Ctr Univ Paris Sud, UMR 130, LURE, F-91898 Orsay, France

来源：

SURFACE & COATINGS TECHNOLOGY | 2002年 / 161卷 / 2-3期

关键词：

nickel-based superalloy; microstructure; Pt diffusion;

D O I：

10.1016/S0257-8972(02)00559-5

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The in-depth microstructure changes in nickel-based superalloy due to prior Pt diffusion treatment have been analyzed using complementary X-ray methods. X-Ray diffraction shows the presence of a three-phase system in the entire treated thickness for thick Pt coatings (10 mum). Surface probing by X-ray absorption spectroscopy reveals the presence of a Pt-based phase at the top surface. For thinner Pt coatings (5 mum), X-ray diffraction and absorption techniques reveal a homogeneous in-depth microstructure associated with the gamma/gamma' Ni-based superalloy phases. Results obtained for these two thickness values are well correlated with in-depth Pt concentration profiles determined by energy-dispersive X-ray analysis (EDX). (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：200 / 209

页数：10

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