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 ...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.展开更多
文摘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.
