| 摘要 |
PURPOSE:To manufacture an iron base material which was subjected simultaneously to carbonitriding and sulfurizing on the surface thereof by ion engineering method, by producing glow discharge in a dilute gas contg. a C source, an N source, and an S source by the application of d.c. voltage across an anode and a cathode, i.e., a material to be treated. CONSTITUTION:A treating gas is introduced into a furnace which has been evacuatd to a press. not higher than 10<-1> Torr. Then a d.c. voltage is applied across the material to be treated as a cathode, and an anode in order to conduct ion surface treatment of the material by producing glow discharge in the diluted gas including a C source, an N source, and an S source. For the treating gas is used a mixt. of at least one member selected from the group consisting of Ar, He, and H2; and N2 as an N source; CH4 etc. as a C source; and H2S etc. as an S source. The treating gas comprises 10-90% by vol. N2, the balance being a C source such as CH4 etc., an S source such as H2S, and other gas. H2S may pref. be contained in the treating gas at least 0.01% by vol. As the result an iron base material with a wear-resistant and self-lubricating sulfurized and carbonitrided layer on the surface thereof is manufactured. |
