Microstructure and Properties of Mo2FeB2 Cermet Coating by Induction Heating

Authors :: Zhou, Xiao Ping
Xu, Yi Sheng
Hu, Xin Bin
Source :: Advanced Materials Research; February 2011, Vol. 189 Issue: 1 p528-532, 5p
Publication Year :: 2011
Abstract: Mo<subscript>2</subscript>FeB<subscript>2</subscript> Cermet Coating was deposited on Fe substrate by react flame spraying (RFS) process. Three different groups of specimens were prepared according to the change of induction heating treatment time. Comparative study of phase composition, microstructure, interfacial microstructure and bond strength of Mo<subscript>2</subscript>FeB<subscript>2</subscript> Coating was carried out. X-ray diffractometry (XRD) and Scanning electron microscopy (SEM) were used to characterize the Mo<subscript>2</subscript>FeB<subscript>2</subscript> coating. The bond strength between the coatings and Fe substrates was measured with the pull-off test method according to the corresponding GB 8642-88 standard. Results indicated that the time of induction heating treatment greatly affected the microstructure, interfacial microstructure and bond strength of Mo<subscript>2</subscript>FeB<subscript>2</subscript> coating. 13 seconds of induction heating treatment favoured the formation of a compact Mo<subscript>2</subscript>FeB<subscript>2</subscript> Coating with the highest bond strength of approximately 60 MPa.