钢铁材料新型等离子体渗氮工艺的研究现状

Research status of new plasma nitriding process for steel materials

传统等离子体渗氮存在着渗氮时间长、渗氮不均匀等问题,因此提高等离子体渗氮效果和渗氮速率是等离子体渗氮技术发展的重点方向。本文综述了活性屏等离子体渗氮的技术原理和近年来的发展特点,梳理了多元离子共渗、表面自纳米化预处理和预氧化3种催化技术在传统等离子体渗氮过程中的作用机理和目前的发展现状。多种催化技术相结合的传统等离子体渗氮工艺和活性屏等离子体渗氮的催化工艺将是未来等离子体渗氮发展的重要方向。

Traditional plasma nitriding has problems such as long nitriding time and uneven nitriding.Therefore,improving the effectiveness and rate of plasma nitriding is a key direction for the development of plasma nitriding technology.This article reviews the technical principles of active screen plasma nitriding and its development characteristics in recent years,and summarizes the action mechanisms of three catalytic techniques,namely multiple ion co-diffusion,surface self-nanocrystallization pretreatment and pre-oxidation in the traditional plasma nitriding process and the current development status.The traditional plasma nitriding process combined with various catalytic technologies and the catalytic process of active screen plasma nitriding will be an important direction for the development of plasma nitriding in the future.