Wear resistance of Fe-based amorphous coatings prepared by AC-HVAF and HVOF. Issue 1 (2nd January 2017)

• Record Type: Journal Article
• Authors: Ma, H. R.; Li, J. W.; Jiao, J.; Chang, C. T.; Wang, G.; Shen, J.; Wang, X. M.; Li, R. W.
• Is Part Of: Materials science and technology. Volume 33:Issue 1(2017)
• Page Start: 65
• Page End: 71
• Publication Date: 2017-01-02
• Subjects: Amorphous alloys -- Wear resistance -- Tribological properties -- Coatings -- Thermal spraying; Materials science -- Periodicals; Microstructure -- Periodicals; Metallurgy -- Periodicals; 620.1105
• DOI: 10.1080/02670836.2016.1160195
• Languages: English
• ISSNs: 0267-0836

Abstract

Abstract : Fe63 Cr8 Mo3.5 Ni5 P10 B4 C4 Si2.5 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.