摘要
利用辉光等离子渗金属技术,在0Cr18Ni9Ti不锈钢表面形成渗Zr合金层,探讨了极间距、气压、保温温度、源-阴极电压差、保温时间对渗Zr合金层厚度的影响,进而优化工艺参数,并对合金层的金相组织、元素分布及物相组成进行分析。优化工艺参数为:极间距30 mm,工作气压35 Pa,保温温度1060℃,源-阴极电压差300 V,保温时间5 h,所获渗层厚度为65μm;Zr在渗层中呈梯度分布,渗层组织为柱状晶,且与基体呈良好的冶金扩散结合。
The surfaces of the 0Cr18Ni9Ti stainless steel were modified with the Zn-alloyed layer,synthesized by double glow discharge plasma alloying. The influencing deposition factors,including the Z-content,separation of electrode,bias voltage,pressure,and alloying temperature and time,on the thickness of Zr-alloyed layer were evaluated. The Zr-alloyed layer was characterized with X-ray diffraction,scanning electron microscopy,and metallurgical microscopy. The results show that the Zr-alloyed layer significantly improves the oxidation resistance of the stainless steel. The columnar-phased Zr-layer,65 μm thick,was synthesized with a strong interface adhesion under the optimized conditions: an electrode-separation of 30 mm,a pressure of 35 Pa,a temperature of 1060℃,an alloying time of 5 h,and a bias voltage of 300 V.
出处
《真空科学与技术学报》
EI
CAS
CSCD
北大核心
2013年第11期1133-1138,共6页
Chinese Journal of Vacuum Science and Technology
基金
国家自然科学基金资助项目(51264007)
国家自然科学基金青年基金项目(51201043)
广西自然科学基金重点项目(2010GXNSFD013008)
广西科学研究与技术开发科技攻关计划项目(桂科攻12118020-2-2-1)
广西信息材料重点实验室项目(桂科能1210908-10-Z)
关键词
辉光等离子
不锈钢
渗Zr合金层
冶金结合
Glow plasma
Stainless steel
Zr-alloyed layer
Metallurgical bonding