常压等离子多元共渗及其在气缸套上的应用

Multicomponent Cementation by Ordinary Pressure Plasma and Application to Cylinder Jacket

利用常压等离子体扫描金属表面，实现了快速扫描多元共渗。用此技术对硼铸铁气缸套进行了Ｂ－Ｓｉ－Ｒｅ多元共渗。通过电子探针、金相显微镜对多元共渗层的成分、组织进行了观察，利用显微硬度计测定了共渗层的硬度分布。９５型硼铸铁气缸套分别进行等离子多元共渗与激光处理，对比磨损试验结果表明：等离子多元共渗气缸套的耐磨性及配副性能优于激光处理气缸套；缸套耐磨性提高７．７％，活塞环耐磨性提高４．１％，达优等产品标准。且设备投资少，生产效率高，生产过程稳定。

The multicomponent cementation were brought about by ordinary pressure plasma rapid scanning on metal surface. B-Si-Ce multion-ponent cementation were tngaged in boron cast iron cylinder jacket. The compositionand microstructure were observed using electron probe and metallurgical microscope and the microhardness distribution of plasma compentation layer was also tested by a microhardness tester. After contrast multicomponent cementation with laser process on wearing to as cast cylinder, it is shown the former is provided with well wearability and matching ability, the wear resistant increases by 7.7%, the wearabality of matching piston increases by 4.1%, up to the standard for excellent products, and the investment in equipment is not much, the procedure of production is steady, and the production efficiency is high.