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High-temperature sliding wear behaviors of laser clad Mo 2 Ni 3 Si/NiSi metal silicide composite coatings

  • Beihang University

科研成果: 期刊稿件文章同行评审

摘要

A novel wear- and oxidation-resistant Mo 2 Ni 3 Si/NiSi metal silicide composite coatings were fabricated on substrate of an austenitic stainless steel by laser cladding using Ni-Mo-Si elemental powder blends. The microstructure of the coating was characterized by optical microscope (OM), scanning electron microscope (SEM), X-ray diffraction (XRD) and energy dispersive spectrometer (EDS). The high-temperature wear resistance of the coating was evaluated under sliding wear test conditions. Results show that microstructure of the coating consists of the Mo 2 Ni 3 Si primary dendrite and interdendritic Mo 2 Ni 3 Si/NiSi eutectic. Due to the presence of a large amount of hard and wear-resistant Mo 2 Ni 3 Si phase, the laser clad Mo 2 Ni 3 Si/NiSi metal silicide composite coating has excellent wear resistance under high-temperature sliding wear test conditions.

源语言英语
页(从-至)190-195
页数6
期刊Applied Surface Science
214
1-4
DOI
出版状态已出版 - 6 7月 2003

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