In Situ Investigation of the Oxidation of Cobalt-Base Superalloys in the Environmental Scanning Electron Microscope

被引：2

作者：

Weiser, Martin ^{[3
]}

Reichmann, Angelika ^{[2
]}

Albu, Mihaela ^{[2
]}

Virtanen, Sannakaisa ^{[3
]}

Poelt, Peter ^{[1
]}

机构：

[1] Graz Univ Technol, NAWI Graz, Inst Elect Microscopy & Nanoanal, A-8010 Graz, Austria

[2] Ctr Electron Microscopy, A-8010 Graz, Austria

[3] Univ Erlangen Nurnberg, Inst Surface Sci & Corros LKO, D-91058 Erlangen, Germany

来源：

ADVANCED ENGINEERING MATERIALS | 2015年 / 17卷 / 08期

关键词：

HIGH-TEMPERATURE OXIDATION; AL ALLOYS; CR-AL; BEHAVIOR; CORROSION; SYSTEM; ESEM;

D O I：

10.1002/adem.201500146

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Since their discovery in 2006, cobalt-base superalloys have aroused increasing interest as potential materials for various high-temperature applications. One of the still unsolved problems is their resistance to oxidation. In the present study, the very first stages of the oxidation process of a Co-9Al-9W alloy were investigated. To this aim, the progress of the oxidation process was continuously observed at high magnification in an environmental scanning electron microscope (ESEM). Oxidation starts not necessarily at the grain boundaries, and both the onset temperature and the oxidation rate depend on the crystallographic orientation of the crystallites.

引用

页码：1158 / 1167

页数：10

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