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High Temperature Oxidation Behavior of Plasma-sprayed Ti(Al,O)/$Al_2O_3$ Coatings on SS41 Steel  

Choi, G.S. (Dept. of Mechanical Engineering, Engineering College, Dongmyong University)
Woo, K.D. (Devision of Advanced Materials Engineeing & RCIT, Engineeing College, Chonbuk National University)
Lee, H.B. (Devision of Advanced Materials Engineeing & RCIT, Engineeing College, Chonbuk National University)
Jeon, J.Y. (Devision of Advanced Materials Engineeing & RCIT, Engineeing College, Chonbuk National University)
Publication Information
Journal of the Korean Society for Heat Treatment / v.20, no.5, 2007 , pp. 231-236 More about this Journal
Abstract
High velocity oxy-fuel (HVOF) spraying was used to coat Ti(Al,O)/$Al_2O_3$ powder onto the SS41 steel plate. Macrostructure of the coated specimen has been investigated by scanning electron micrograph (SEM). High temperature oxidation behavior of the coated specimen and SS41 steel have been studied. From the results of SEM observation, Ti(Al,O)/$Al_2O_3$ powder was coated well onto the substrate SS41 steel. Porosity onto the coated layer was only 0.38%. The oxidation results showed that Ti(Al,O)/$Al_2O_3$ powder coated SS41 steel have improved little oxidation resistance at $900^{\circ}C$ in air, but improved remarkably oxidation resistance at $800^{\circ}C $ in air compare to the substrate SS41 steel.
Keywords
SS41 steel; High velocity oxy-fuel (HVOF); Hard facing coating; Ti(Al,O)/$Al_2O_3$ powder;
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