Journal
CORROSION SCIENCE
Volume 201, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2022.110282
Keywords
TP316H; QPQ treatment; Fretting corrosion; Liquid sodium
Funding
- National Natural Science Foundation of China [U2067221]
- Sichuan Science and Technology Planning Project [2022JDJQ0019]
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The fretting corrosion behavior of QPQ-treated TP316H steel in liquid sodium was investigated, and the effect of the multilayer structure on wear resistance and corrosion resistance was studied.
The fretting corrosion behavior of quench-polish-quench (QPQ)-treated TP316H steel was investigated in liquid sodium at 450 degrees C. The surface of the sample after QPQ is a multi-layer structure, consisting of the outermost oxide layer, the middle nitriding layer, and an underneath diffusion layer. The fretting wear and corrosion increased the material damage. With increasing thickness of the nitriding layer, the cross-sectional hardness and wear resistance remarkably increased, the fretting corrosion volume decreased. The effect of multilayer structure anti-wear and anti-corrosion were examined. Possible fretting corrosion mechanisms of the multilayer structure prepared by QPQ on TP316H in liquid sodium are discussed.
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