Journal
VACUUM
Volume 148, Issue -, Pages 158-167Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.vacuum.2017.11.015
Keywords
Thermo-reactive deposition; Cr-V coating; AISI D3 steel; Growth evolution; Mechanical properties
Funding
- Undergraduate Innovation and Entrepreneurship Program in Si Chuan province [KSZ14122]
- Youth science and technology innovation team of electrochemistry for energy materials (Southwest Petroleum University) [2015CXTD04]
- Key Lab of Material of Oil and Gas Field [X151516KCL02]
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The growth dynamics of hard Cr-V composite surface layer on AISI D3 cold work steel surface was investigated, where the coating was fabricated by Thermo-reactive deposition at 1000 degrees C. The heating durations critically contributes to the microstructure evolution as well as the coating adhesive strength and mechanical properties. Surface and interface structural changes were observed by Scanning Electron Microscopy, Energy Dispersive X-ray spectroscopy, and X-ray diffraction. The results well show, the growth of Cr-V composite layer depends on the coating process duration, the thickness of obtained coatings ranged from 5.0 to 11.8 mu m. The obtained coating demonstrates the multilayered structure consisting of the carbide located at the outmost layer and diffusion layer of Fe-Cr solid solution. The coating demonstrates desirable adhesive strength and toughness. A possible growing model of formation process for the Cr-V composite surface layer was proposed. (C) 2017 Elsevier Ltd. All rights reserved.
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