An overview of the oxidation performance of suicide diffusion coatings for vanadium-based alloys for generation IV reactors

作者：Chaia N; Mathieu S^*; Cozzika T; Rouillard F; Desgranges C; Courouau J L; Petitjean C; David N; Vilasi M

来源：Corrosion Science, 2013, 66: 285-291.

DOI：10.1016/j.corsci.2012.09.031

• Intermetallics
• Weight loss
• Oxidation
• High temperature corrosion
• Reactor conditions

This study focuses on the development of new protective coatings for the vanadium-based alloy V-4Cr-4Ti. Halide-activated pack-cementation (HAPC) technique was used to develop VxSiy multilayered diffusive suicide coatings. The outer layers (coatings) were formed of VSi2 doped with 27 at.% Cr or TiSi2. These compounds exhibited a very low oxidation rate at 650 degrees C, both in air and at a low oxygen pressure (He, 5 PPm O-2). The coatings formed mainly of MSi2 were found to be insensitive to pesting and largely unreactive to liquid sodium (%26lt;10 ppm O-2) during a 360 h compatibility test at 550 degrees C.

• 出版日期2013-1
• 单位中国地震局