Plasma Spray Boron Carbide Coating
等离子喷涂制备碳化硼涂层

The phase composition and microstructure of boron carbide coatings by plasma spray wereinvestigated through X-Rad, XPS and SEM. The porosity and microhardness of the coatings werealso measured. The results showed that The plasma spray boron carbide coatings by using theimproved F4-MB plasma gun under atmospheric pressure had the lower porosity 3%~4% and theclosed microhardness Hv >28GPa compared with the coatings obtained under up to 2kpa argonpressure.