摘要
本文揭示了内燃机车柴油机合金铸铁缸套采用离子氮碳、离子硫氮碳和离子氧氮碳共渗工艺所获得的化合物层形貌、厚度、相组成和共渗层硬度分布的特点及其变化规律。在此基础上，对其抗穴蚀性能进行了实验研究。结果表明：经离子氧氮碳共渗处理获得的由Ｆｅ３Ｏ４＋Ｆｅ２～３（Ｎ，Ｃ）组成，能包复表层石墨的高硬度致密复合化合物层，具有较高的穴蚀抗力。最后，对离子多元共渗缸套的穴蚀过程及提高其抗穴蚀性能的途径进行了探讨。
The alloy cast iron cylinder for diesel locomotive was treated by plasma nitrocar-burizing,oxynitrocarburizing and sulphonitrocarburing.The morphology,phas components,layer depth and hardriess of deposition were measured.Upon this,the cavitation property wasstudied,and the results showed that:after plasma oxynitrocarburizing,the cylinder has ac-quired a hard and dense surface layer of Fe3O4+Fe23(N ,C)compound,and the cavitationrate is reduced.Finally,the cavitation process and anticavition performance was discussed.
出处
《中国铁道科学》
EI
CAS
CSCD
北大核心
1995年第2期92-98,共7页
China Railway Science
关键词
缸套
离子多元共渗
抗穴蚀
内燃机车
柴油机
cylinder, plasma muticomponent treatment,morphology,anti-cavitation
