ROLE OF PLATINUM IN ALUMINIDE COATINGS

被引：96

作者：

TAWANCY, HM ^{[1
]}

ABBAS, NM ^{[1
]}

RHYSJONES, TN ^{[1
]}

机构：

[1] ROLLS ROYCE PLC,MAT & MECH RES,BRISTOL BS12 QE,ENGLAND

来源：

SURFACE & COATINGS TECHNOLOGY | 1991年 / 49卷 / 1-3期

关键词：

D O I：

10.1016/0257-8972(91)90022-O

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

An investigation has been carried out to determine the role of platinum in aluminide coatings on selected nickel-based superalloys. Various microscopy, spectroscopy and diffraction techniques were used to characterize the microstructure. It is found that platinum improves the protective nature of the coating by (1) increasing its diffusional stability, (2) eliminating chromium-rich precipitates from the outer coating layer and (3) preventing refractory transition elements such as molybdenum, vanadium and tungsten from diffusing into the outer coating layer. However, the oxidation behaviour of the coating varies from one alloy substrate to another depending upon its chemical composition and, in particular, the rare earth elements.

引用

页码：1 / 7

页数：7

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