高温渗碳制备防静电氧化锆陶瓷  

Preparation of Anti-satic Zirconia Ceramics by Carburization at High Temperature

作　　者：杨现锋[1] 徐协文[1] 刘其城[1] 谢志鹏[2] 

机构地区：[1]长沙理工大学物理与电子科学学院,长沙410006 [2]清华大学新型陶瓷与精细工艺国家重点实验室,北京100084

出　　处：《材料研究学报》2016年第1期45-50,共6页Chinese Journal of Materials Research

基　　金：国家自然科学基金51102024资助项目~~

摘　　要：用高温渗碳方法制备氧化锆陶瓷,研究了渗碳温度和时间对表面电阻率和维氏硬度的影响。结果表明,高温渗碳后在氧化锆陶瓷表面形成了改性层;随着渗碳温度的提高和渗碳时间的延长表面电阻率下降,维氏硬度升高。渗碳温度为1450℃、渗碳时间为3 h的氧化锆陶瓷,其表面电阻率由1014W/□低至107W/□,维氏硬度略有升高达到14 GPa。显微结构和组成分析结果表明,在氧化锆陶瓷表面形成了约3μm的改性层。结果证实,C元素的浓度从表面到内部逐渐降低,在内部主要以单质形式存在,在表层主要以单质C及Zr C0.85形式存在,使其具有防静电性能。Anti-static zirconia ceramic with perfect mechanical properties was prepared by carburization treatment method. The influence of carburization temperature and time on the surface resistivity and Vickers hardness was investigated. It shows that after carburization the surface resistivity was decreased,while Vickers hardness was enhanced for the Zr O2 ceramics. After carburization at 1450℃ for 3 h, the surface resistivity of Zr O2 ceramic could be reduced to 107W/□ and Vickers hardness could be enhanced slightly to 14 GPa; the surface modification layer was about 3 μm in thickness; and of which the carbon content deceased from the surface towards the inner. It was verified by XPS that carbon in the inner portion of carburization layer existed as elemental status, while on the surface layer as element C and carbide Zr C0.85, which might facilitate the anti-static property of the Zr O2 ceramics.

关 键 词：无机非金属材料 渗碳 表面电阻率 氧化锆 

分 类 号：TB321[一般工业技术—材料科学与工程]