High-temperature wear and cyclic oxidation behavior of (Ti, W)C reinforced stainless steel coating deposited by PTA on a plain carbon steel

Abstract

(Ti, W)C reinforced stainless steel coatings were fabricated by plasma cladding for investigating the role of (Ti, W)C particles on microstructure, cyclic oxidation and high-temperature wear resistance of the coatings. (Ti, W)C particles were uniformly dispersed in the coatings and exhibited a diffusion-metallurgical bond with the (Fe, Ni) matrix. Although adding (Ti, W)C to the coating reduced the oxidation resistance due to the low thermal stability of these carbides , the rapid formation and thickening of oxide scale could alleviate the sticking problem in actual rolling condition. Moreover, (Ti, W)C addition resulted in the rapid formation and excellent maintenance of the tribo-oxide glaze during the sliding process, which remarkably improved the wear resistance and reduced the coefficient of friction . • (Ti, W)C particles were uniformly dispersed in the coatings and exhibited ametallurgical bond with the (Fe, Ni) matrix. • Adding (Ti, W)C to the coating reduced the oxidation resistance due to low thermal stability of the (Ti, W)C particles. • The rapid formation and thickening of oxide scale caused by (Ti, W)C addition could alleviate the sticking problem. • The rapid formation and excellent maintenance of the glaze was performed on the worn surface by (Ti, W)C addition. • (Ti, W)C addition significantly improved the high-temperature wear resistance and reduced the coefficient of friction.