Journal
MATERIALS SCIENCE AND TECHNOLOGY
Volume 33, Issue 1, Pages 65-71Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02670836.2016.1160195
Keywords
Amorphous alloys; Wear resistance; Tribological properties; Coatings; Thermal spraying
Funding
- National Natural Science Foundation of China [51501210, 51571207, 51274151]
- Ningbo Municipal Nature Science Foundation [2015A610002]
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Fe63Cr8Mo3.5Ni5P10B4C4Si2.5 amorphous coatings have been prepared by the activated combustion high velocity air fuel (AC-HVAF) and high velocity oxygen fuel (HVOF) processes. The microstructure and wear resistance of the amorphous coatings are comparatively studied. The wear volume loss of the AC-HVAF coating is approximately seven times less than that of the HVOF coating, indicating that the AC-HVAF coating exhibits better wear resistance. Detailed analysis on the worn surface indicates that the enhanced wear resistance of the AC-HVAF coating is mainly attributed to the formation of a more stable oxide tribolayer and smoother worn surface, which result from the dense and complete amorphous microstructure of the AC-HVAF coating. The wear mechanism of the amorphous coatings is dominated by oxidation wear.
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