METHOD FOR HIGH TEMPERATURE GAS NITRIDING OF TITANIUM ALLOY

摘要

Provided is a method for high-temperature gas nitriding of titanium alloy comprising: (first step) a step of preparing a titanium alloy substrate; (second step) a step of forming a nitriding layer on a surface by arranging the titanium alloy substrate in a heat treatment furnace and heating the titanium alloy substrate under the atmosphere of nitrogen gas, and forming a matrix phase by making nitrogen penetrate inside; and (third step) a step of conducting water quenching of the titanium alloy substrate in the second step. As such, a surface of a titanium steel material or titanium alloy is hardened by high-temperature gas nitriding, and the corrosion resistance, abrasion resistance, and surface hardness of the steel material or the titanium alloy can greatly be increased. Moreover, process costs can greatly be reduced when compared with a traditional gas nitriding method using plasma and ammonia.