High Temperature Oxidation Behavior of (Ti, Al) C Ceramic Coatings on Carbon Steel Prepared by Electrical Discharge Coating in Kerosene

Abstract:

Multi-component metal ceramic coating（Ti, Al）C was prepared on the 0.45% carbon steel by electrical discharge coating (EDC) in a hydrocarbon medium. The coating of the samples before and after oxidation was analyzed by different methods including X-ray diffraction (XRD), scanning electron spectroscopy (SEM) and energy disperse spectroscopy (EDS).The thermogravimetric technique was used to approximate the kinetics of oxidation of the coated and the uncoated samples.The results indicated that the thickness of the coating was about 20μm, and the composition of the ceramic coating mainly consisted of (Ti, Al) C and a little Ti₃AlC. An oxide film with compact structure formed after 600°C oxidation for 200h, and it was mainly composed of Al₂O₃ and TiO₂, which inhibited further oxygen diffusion into the coating. The (Ti, Al) C ceramic coating possessed slow oxidation rate and high temperature oxidation resistance.

• Periodical: Advanced Materials Research (Volumes 189-193)
• Pages: 186-192
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.189-193.186
• Online since: February 2011
• Authors: Guo Liang Li, Xiao Hua Jie, Ling He
• Keywords: (Ti, Al) C, Electrical Discharge Coating (EDC), High Temperature Oxidation Behavior, Multi-Component Ceramic Coating

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