Chemical interaction and gas transport processes for boron atom delivery to saturating surface during steel diffusion boriding have been studied experimentally and with thermodynamic calculations. Effect of coating composition, chemical interaction with oxygen of the air and outgassing on sintering coating and the properties of obtained diffusion layer has been analyzed. The use of coating with weak sintering property enables one to perform a quenching as soon as boriding has been finished. The properties of steels type 45 and 5KhNM and a borided layer after heat-chemical treatment at 900° C for 4h are given. Presented investigation of diffusion boriding offers a mean to affect coating properties and obtained diffusion layers.
|Original language||English (US)|
|Number of pages||7|
|Journal||Izvestiya AN SSSR: Metally|
|State||Published - Sep 1 1991|
All Science Journal Classification (ASJC) codes