Title: Study on the Isolation of Carbides from Stainless Steel and the Behaviors of Carbides and Nitrides in 17%Cr Steel
Abstract:The method for the electrolytic isolation of carbides and nitrides from 18%Cr, 8%Ni, 0.09%C austenitic and 17%Cr, 0.11%C ferritic stainless steels, and the precipitation behaviors of the carbides and ...The method for the electrolytic isolation of carbides and nitrides from 18%Cr, 8%Ni, 0.09%C austenitic and 17%Cr, 0.11%C ferritic stainless steels, and the precipitation behaviors of the carbides and nitrides in the latter steel under heat treatment have been studied. The results obtained are as follows: (1) For the isolation of carbides from the austenitic stainless steel, the electrolyte consisting of 5% (vol) HCl, 95% (vol) methyl alcohol and 36 g zinc chloride is most suitable. The alcoholic iodine method used in place of electrolysis is also favourable in this case. (2) For the isolation of carbides from the ferritic stainless steel, the electrolyte consisting of 3% (vol) HCl, 97% (vol) methyl alcohol and 36 g of zinc chloride is best fitted. The nitrides can be isolated simultaneously in this case. (3) The precipitation of the carbides and nitrides from the quenched ferritic stainless steel does not occur at the temperatures over 1000° or under 500°C.Read More