期刊论文

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

Yang, Xianfeng(yangxf05@mails.thu.edu.cn)

中文

材料研究学报

1005-3093

2016

30

1

45-50

10.11901/1005.3093.2015.028

Supported by National Natural Science Foundation of China No. 51102024.

本校为第一且通讯机构

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 aftercarburization the surface resistivity was decreased, while Vickers hardness was enhanced for the ZrO2ceramics. After carburization at 1450 for 3 h, the surface resistivity of ZrO2ceramic could be reduced to 107Ω/⪡and Vickers hardness could be enhanced slightly to 14 GPa;the surface modification layer was about 3 μm in thickness;and...