Selected properties of high velocity oxy liquid fuel (HVOLF) - sprayed nanocrystalline WC-CO INFRALLOYTM S7412 coatings modified by high energy electric pulse

[摘要] The paper presents a brief study of selected properties of HVOLF-sprayed nanocrystalline WC-Co InfralloyTM S7412 coatings modified by the application of a high energy electric pulse. The anti-wear coatings were applied on carbon steel with the use of High Velocity Oxy Liquid Fuel (HVOLF) spraying system TAFA – JP-5000. The process was modified by the application of the SST France & Vision Lasertechnik device WS 7000 S. The resultant type of coatings may be applied to increase the abrasive wear resistance of tools and machine parts. The properties of the powders and coatings were studied using metallographic methods and EDS analyses. The microhardness and nanohardness of the resultant layers were measured and Young’s modulus of elasticity was determined.

[学科分类] 金属与冶金

[关键词] coatings;surface layer modification;HVOF;metallographic methods;mechanical properties