Influence of Spray Parameters on Sliding Wear Properties of HVOF Sprayed Fe-Based Amorphous Coatings

Abstract:

Amorphous powders of Fe-10.7%W-4.5%Cr-4.1%B-3.6%Ni-3.5%Si-2.1%Mo-1.2%C-0.7%Mn were sprayed under six sets of spraying parameters using high velocity oxy-fuel spraying. Phase structure of coatings as well as microstructure is found to be strongly affected by spraying parameters. Sliding wear resistance of amorphous coatings benefits significantly from less porosity and oxides. In addition, evidence correlation is found between amorphous content and wear resistance of coatings. Coating with the best wear resistance exhibits the wear rate of only 2.84×10^-6 mm³/(N·m), equals 1.70% and 217% of cast 316L stainless and HVOF-sprayed Cr₃C₂-NiCr coating respectively.

• Periodical: Applied Mechanics and Materials (Volume 723)
• Pages: 848-851
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.723.848
• Online since: January 2015
• Authors: Guang Liu*, Zi Yun Zheng, Li Jia, Bing Ma, Lang Cui, Guo Ping Ling
• Keywords: Fe-Based Amorphous, High Velocity Oxy-Fuel Spraying, Sliding Wear, Thermal Spraying

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