Fig. 5. Microhardness profiles of plasma carburized AISI 420 martensitic stainless steel samples for different methane content in the gas mixture. Samples treated at 723 K, for 4 h, gas mixture flow rate of 1.67×10−6Nm3 s−1 and pressure of 400 Pa.
Fig. 5. Microhardness profiles of plasma carburized AISI 420 martensitic stainless steelsamples for different methane content in the gas mixture. Samples treated at 723 K, for4 h, gas mixture flow rate of 1.67×10−6Nm3 s−1 and pressure of 400 Pa.