不锈钢在甘油体系中等离子体电解渗碳层特性研究

Characterization of Plasma Electrolytic Carburized Stainless Steel in Glycerin Aqueous Solution

以甘油+20%水溶液为电解液,利用液相等离子体电解渗技术在AISI304不锈钢表面成功实现了快速渗碳。分析了渗碳层的组织结构,并评估了渗碳层与GCr15钢球对磨时摩擦学行为。结果表明,经过3min/350 V等离子体电解渗处理,渗碳层深度达到85μm,最大显微硬度达到762 HV0.02。干摩擦条件下,渗碳层的磨损率比不锈钢基体降低了一个数量级。

Rapid carburization on AISI 304 stainless steel was achieved by plasma electrolytic technique in glycerin ＋ 20% water solution.The microstructure of carburizing layer was analyzed,and its tribological behaviors against GCr15 bearing steel ball under dry friction were evaluated using a SRV ball-on-disc friction tester.The results show that after 3 min and 350 V plasma electrolytic carburizing,the depth of carburizing layer is up to 85 μm and its maximum microhardness is 762 HV0.02.Under dry friction,the wear rate of carburizing layer against GCr15 bearing steel ball decreased about one order of magnitude compared to untreated AISI304 substrate.