高温渗碳制备防静电氧化锆陶瓷
发布时间:2018-04-11 13:55
本文选题:无机非金属材料 + 渗碳 ; 参考:《材料研究学报》2016年01期
【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。
[Abstract]:Zirconia ceramics were prepared by high temperature Carburizing. The effects of Carburizing temperature and time on surface resistivity and Vickers hardness were studied.The results show that the modified layer is formed on the surface of zirconia ceramics after high temperature carburization, and the Vickers hardness increases with the increase of carburizing temperature and the decrease of surface resistivity of Carburizing time.The surface resistivity of zirconia ceramics with Carburizing temperature of 1450 鈩,
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