THIN OXIDE-FILMS ON COCRW-BASED COATING ALLOYS

被引：4

作者：

SACRE, S ^{[1
]}

THOMAS, LK ^{[1
]}

机构：

[1] TECH UNIV BERLIN,INST METALFORSCH,D-10623 BERLIN,GERMANY

来源：

SURFACE & COATINGS TECHNOLOGY | 1994年 / 67卷 / 1-2期

关键词：

D O I：

10.1016/S0257-8972(05)80021-0

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The initial oxidation of CoCrW alloys with additions of Y, Fe and ill was investigated at 450 degrees C in air. Electron-beam-melted samples and films produced by low pressure plasma spraying on the Ni-based superalloy MA 6000 were used. The structure and composition were measured by scanning electron microscopy and energy-dispersive X-ray diffraction, and the oxide thickness by ellipsometry. Different structures and Y additions did not influence the oxidation. The addition of Fe increases the disorder, while Al causes precipitation. Both processes enhance the speed of oxidation; for Al it can be reduced again by the dissolution of the precipitates at high temperatures.

引用

页码：9 / 15

页数：7

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