Effect of RE on the Brittleness of Electrolytic Boronization Coating  

作　　者：余忠荪 邵光杰 郭瑞强 

机构地区：[1]Shanghai University of Technology,Shanghai 200072,China

出　　处：《Journal of Rare Earths》1991年第1期57-59,共3页稀土学报（英文版）

摘　　要：The electrolytic coatings of boron and RE-boron on medium carbon steel are carried out in molten salt mix- tures respectively.The brittleness of both coatings has been measured by using sound-emission with the method of three point bending.Results show that the brittleness of electrolytic boronization coating can be obviously de- creased by addition of RE elements.Meanwhile,the shape of crack and the solid solubility of RE in boride and α-Fe phase are determined,and the effect of RE on the lattice constant of Fe_2B is discussed.From these experi- ments,the authors explain the cause of the brittleness decreasing of electrolytic boronization coating.The electrolytic coatings of boron and RE-boron on medium carbon steel are carried out in molten salt mix- tures respectively.The brittleness of both coatings has been measured by using sound-emission with the method of three point bending.Results show that the brittleness of electrolytic boronization coating can be obviously de- creased by addition of RE elements.Meanwhile,the shape of crack and the solid solubility of RE in boride and α-Fe phase are determined,and the effect of RE on the lattice constant of Fe_2B is discussed.From these experi- ments,the authors explain the cause of the brittleness decreasing of electrolytic boronization coating.

关 键 词：Rare earth BORONIZATION BRITTLENESS 

分 类 号：TF845-55[冶金工程—有色金属冶金]