Title: Influence of Spraying Trajectory on Uniformity of Wear-resistant Coating Sprayed on Teeth Column
Abstract: The WC-10Co4Cr coating was prepared using high velocity oxy-fuel flame spraying(HVOF)technology on aluminum tooth cylinder with two different spraying trajectory.The microstructure and thickness and hardness uniformity of the coating were analyzed by OM,SEM and microhardness testing.The results show that the coating has high density and good bonding between the coating and matrix.In different positions of tooth profile,the coating thickness and hardness distribute non-homogeneously.The deposition rate in the bottom of tooth space is high and coating thickness is much larger.The coating on tooth surface and tooth tip is between 160-210μm in thickness and the values dispersion is small.The coating microhardness,HV0.3,is in the range of 700to 800in the bottom of tooth space and in the range of 1150to 1300for other positions.The spraying trajectory parameter,2 H,affects spray angle and deposition environment when spraying at different positions of tooth,resulting in the different coating morphology,deposition rate and hardness.When 2 H=55mm,the coating thickness and hardness of the different positions are more uniform,but coating in the bottom has some porosity and lower hardness.
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
Access and Citation
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot