Study on B/C Chemical Heat Treatment of 12Cr13 Martensitic Stainless Steel

The effects of technological parameters of solid boroncarburizing and boron-carbon compound carburizing on the microstructure and properties of 12Cr13 martensitic stainless steel were studied.For the co-carburizing，12Cr13 steel was treated by solid borocarburizing heat treatment with different boron-carbon ratios；as for the boron-carbon compound carburizing，12Cr13 martensitic stainless steel was solid carburized first，then the boronizing treatment was carried out to get the optimal composite carburizing parameters.The microhardness，XRD phase structure，corrosion resistance under electrochemistry，friction and wear properties of 12Cr13 martensitic stainless steel samples under the optimum co-carburizing and compound carburizing parameters were tested and analyzed.Results showed that under the co-carburizing conditions of 950 ℃and 6 h，the optimum boron-carbon ratio of borocarburizing agent was 6:4；Under the condition of chemical compound carburizing for 6 h，the optimum parameters of boron-carbon compound carburiz