Effect of water vapor on the oxidation behavior of HVAF-sprayed NiCr and NiCrAlY coatings

被引：14
|
作者：
Sadeghimeresht, Esmaeil [1 ]
Eklund, Johan [2 ]
Simon, Julien Phother [2 ]
Liske, Jesper [2 ]
Markocsan, Nicolaie [1 ]
Joshi, Shrikant [1 ]
机构：
[1] Univ West, Dept Engn Sci, S-46153 Trollhattan, Sweden
[2] Chalmers Univ Technol, Dept Environm Inorgan Chem, S-41296 Gothenburg, Sweden
来源：
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2018年 / 69卷 / 10期
关键词：
NiCr; NiCrAlY; oxidation protection; thermal spray coating; water vapor; HIGH-TEMPERATURE CORROSION; ISOTHERMAL OXIDATION; STAINLESS-STEEL; H-2-H2O ENVIRONMENT; HVOF; AIR; ALLOYS; PROTECTION; BIOMASS; FE;
D O I：
10.1002/maco.201710005
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Isothermal oxidation behavior of NiCr and NiCrAlY coatings deposited onto low alloy 16Mo3 steel by high-velocity air fuel (HVAF) process was investigated in 5% O-2+20% H2O+N-2 at 600 degrees C for 168h. Whereas NiCrAlY showed lower mass gain compared to NiCr, both coatings succeeded in maintaining the integrity with the substrate during the exposure without any breakaway oxidation. A thin Cr-rich oxide scale (Cr2O3) formed on NiCr, and a thin mixed oxide scale (Al2O3 with NiCr2O4) formed on NiCrAlY significantly increasing the oxidation protection in the presence of water vapor.
引用
收藏
页码：1431 / 1440
页数：10
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