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本文阐述TA2纯钛TC4钛合金的离子氮化工艺,列出这两种钛材经离子氮化后的表面硬度、弯曲性能、耐蚀性能及渗层的组織桔构,提出在氮化过程中合理使用氢,既可避免氢脆,又可强化工艺过程。通过氮化气氛的选择,可有效地控制工件表面氮化物的成分和結构。渗层的韌性和表面氮化物的不同組成有密切关系,以ε相为主的渗层組織,比以δ相为主的渗层組織具有更好的韧性,通过改变气氛获得一定的相組成,可满足一定能性要求。
This paper describes the ion nitriding process of TA2 pure titanium TC4 titanium alloy, and lists the surface hardness, flexural properties, corrosion resistance and structure of the two layers of titanium after ion nitriding, In the rational use of hydrogen, both to avoid hydrogen embrittlement, but also strengthen the process. Through the choice of nitriding atmosphere, the composition and structure of nitride on the workpiece surface can be controlled effectively. The toughness of the infiltration layer is closely related to the different compositions of the surface nitrides. The infiltrated layer mainly composed of ε phase has better toughness than the infiltrated layer mainly composed of δ phase, and the phase composition is obtained by changing the atmosphere, To meet certain requirements of energy.