Microstructure and Hardness Characterization of a NiCr/Cr3C2 Coating by High-Velocity Oxy-Fuel Thermal Spraying

Yu Ping Wu; Gai Ye Li

doi:10.4028/www.scientific.net/AMR.79-82.397

Paper Titles

Improved Preparation Technology of Urea Formaldehyde Microcapsules Used in Electrophoretic Display
p.381

Preparation and Characterization of Hollow TiO_X Nano-Spheres for Electrophoretic Displays
p.385

In Vivo Biocompatibility Studies of Nano TiO₂ Materials
p.389

Enhanced Bioactivity of Sandblasted and Acid-Etched Titanium Surfaces
p.393

Microstructure and Hardness Characterization of a NiCr/Cr₃C₂ Coating by High-Velocity Oxy-Fuel Thermal Spraying
p.397

Preparation of Phosphorylated Chitosan/ Chitosan/ Hydroxyapatite Composites by Co-Precipitation Method
p.401

Rapid Synthesis of Eu₂Zr₂O₇ Nanocrystals via Salt-Assistant Combustion Method
p.405

Investigation on Recycling Technology of Carbon Fiber Reinforced Epoxy Resin Cured with Amine
p.409

Microstructure of Ultrasonic-Electrodepositing Nano-Silver Coatings
p.413

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 79-82Microstructure and Hardness Characterization of a...

Microstructure and Hardness Characterization of a NiCr/Cr₃C₂ Coating by High-Velocity Oxy-Fuel Thermal Spraying

Abstract:

A NiCr/Cr3C2 composite coating with a thickness of approximately 200 m was deposited onto 1Cr18Ni9Ti stainless steel substrate by high-velocity oxy-fuel (HVOF) thermal spraying. Microstructure of the coating was characterized using X-ray diffraction(XRD), scanning electron microscopy(SEM) and transmission electron microscopy (TEM). The coating comprised a NiCr matrix and two types of carbides. The NiCr matrix was composed of an amorphous phase and nanocrystalline grain with a size of 10–50 nm. The microhardness of the coating was found to be 1200Hv, which is significantly greater than that of the stainless steel (1Cr18Ni9Ti) substrate (285 Hv).