Synthesis and Erosion Behaviors of Nanoscale Coatings Prepared by Wire Arc Spraying  

作　　者：Cheng, J. B. Xiang, X. B. Wang, Z. H. Xu, B. S. 

机构地区：[1]Hohai Univ, Coll Mech & Mat, Nanjing 210098, Jiangsu, Peoples R China [2]Natl Key Lab Remfg, Beijing 100072, Peoples R China

出　　处：《稀有金属材料与工程》2012年第S1期144-147,共4页Rare Metal Materials and Engineering

基　　金：the Central Universities(2011B08014)

摘　　要：The effects of erosive parameters,such as impact angles and environment temperature,on erosion properties of FeBSiCrMnNb nanoscale coatings were investigated.A series of coatings were prepared by wire arc spraying process.The microstructure of the coating consists of amorphous andα(Fe,Cr)nanocrystalline phase.The nanocrystals with average size of 39 nm are homogenously dispersed in amorphous matrix.The erosion results reveal that the coating exhibits better erosion resistance at lower impact angle.The erosion rates of the coating decrease as function of environment temperature.The relatively erosion resistance of the nanoscale coating is 3.7 times higher than that of AISI1045 steel substrate at 650°C.The main failure mechanism of the coating is brittle fracture.The effects of erosive parameters,such as impact angles and environment temperature,on erosion properties of FeBSiCrMnNb nanoscale coatings were investigated.A series of coatings were prepared by wire arc spraying process.The microstructure of the coating consists of amorphous andα(Fe,Cr)nanocrystalline phase.The nanocrystals with average size of 39 nm are homogenously dispersed in amorphous matrix.The erosion results reveal that the coating exhibits better erosion resistance at lower impact angle.The erosion rates of the coating decrease as function of environment temperature.The relatively erosion resistance of the nanoscale coating is 3.7 times higher than that of AISI1045 steel substrate at 650°C.The main failure mechanism of the coating is brittle fracture.

关 键 词：COATINGS nano materials ABRASIVE 

分 类 号：TG146.4[一般工业技术—材料科学与工程]