Graded PVD Mo-Si interlayer between Si coating and Mo-Si-B alloys: Investigation of oxidation behaviour

被引：9

作者：

Anton, Ronja ^{[1
]}

Huning, Steffen ^{[2
]}

Laska, Nadine ^{[1
]}

Weber, Matthias ^{[3
]}

Schellert, Steven ^{[3
]}

Gorr, Bronislava ^{[4
]}

Christ, Hans-Jurgen ^{[3
]}

Schulz, Uwe ^{[1
]}

机构：

[1] German Aerosp Ctr DLR, Inst Mat Res, D-51147 Cologne, Germany

[2] Tech Univ TU Dortmund, Now LIMO GmbH, D-44319 Dortmund, Germany

[3] Univ Siegen, Inst Mat Engn, D-57076 Siegen, Germany

[4] Karlsruhe Inst Technol KIT, Inst Appl Mat Appl Mat Phys, D-76334 Karlsruhe, Germany

来源：

CORROSION SCIENCE | 2021年 / 192卷

关键词：

Physical vapour deposition; Silicon dioxide; Oxidation protection; Silicon; Mo-silicide; MOLYBDENUM SILICIDES; BARRIER COATINGS; TEMPERATURE; RESISTANCE; FRACTURE; SILICON; GROWTH; MICROSTRUCTURE; CHEMISTRY; DIFFUSION;

D O I：

10.1016/j.corsci.2021.109843

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The insufficient oxidation resistance of Mo-Si-B alloys at high temperatures inevitably requires a protective coating. A dual layer system combining a graded Mo-Si interlayer with a Si oxidation protective top layer has been applied by magnetron sputtering on a Mo-9Si-8B alloy. The interlayer architecture was designed to maximize the adhesion between top layer and substrate by creating thermodynamic compatibility between alloy and Si. Isothermal oxidation tests at 800 and 1200 degrees C in air up to 300 h were performed focusing on chemical reactions between top layer, interlayer and substrate as well as the evolution of the thermally grown SiO2.

引用

页数：12

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