Influence of substrate roughness on the bonding mechanisms of high velocity oxy-fuel sprayed coatings
作者： Y.-Y. Wang , C.-J. Li , A. Ohmori
DOI: 10.1016/J.TSF.2005.03.024
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摘要: Abstract This paper presents a systematic study of NiCrBSi and WC-Co high velocity oxy-fuel (HVOF) sprayed coatings that were deposited on substrates various surface roughnesses to reveal predominant bonding mechanism under pull-off test. During HVOF spray, was completely melted while solid–liquid two-phase particles generated due their different thermo-physical properties. The results showed the adhesive strength increases as substrate roughness from Ra 0.059 μm 9.0 μm. adhesion metallic with fully spray mainly mechanical interlocking, deposition liquid–solid can lead formation physical effect in addition interlocking.
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