高温渗碳制备防静电氧化锆陶瓷*

doi:10.11901/1005.3093.2015.028

材料研究学报

2016, Vol. 30

Issue (1): 45-50 DOI: 10.11901/1005.3093.2015.028

研究论文

本期目录 | 过刊浏览

高温渗碳制备防静电氧化锆陶瓷*

杨现锋¹(

), 徐协文¹, 刘其城¹, 谢志鹏²

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

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

YANG Xianfeng^1,^**(

), XU Xiewen¹, LIU Qicheng¹, XIE Zhipeng²

1. College of physics and electronics science, Changsha university of science & technology, Changsha 410014, China
2. State Key Laboratory of New Ceramics and Fine Processing, College of Materials Science, Tsinghua University, Beijing 100084, China

引用本文:

杨现锋, 徐协文, 刘其城, 谢志鹏. 高温渗碳制备防静电氧化锆陶瓷*[J]. 材料研究学报, 2016, 30(1): 45-50.
Xianfeng YANG, Xiewen XU, Qicheng LIU, Zhipeng XIE. Preparation of Anti-satic Zirconia Ceramics by Carburization at High Temperature[J]. Chinese Journal of Materials Research, 2016, 30(1): 45-50.

全文: PDF(1925 KB) HTML

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10¹⁴ Ω/□低至10⁷ Ω/□, 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3 μm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ZrC_0.85形式存在, 使其具有防静电性能。

关键词 ：无机非金属材料, 渗碳, 表面电阻率, 氧化锆

Abstract：

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 ZrO₂ ceramics. After carburization at 1450℃ for 3 h, the surface resistivity of ZrO₂ ceramic could be reduced to 10⁷ Ω/□ 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 ZrC_0.85, which might facilitate the anti-static property of the ZrO₂ ceramics.

Key words： inorganic non-metallic materials anti-static carburization surface resistivity zirconia

收稿日期: 2015-01-14

基金资助:* 国家自然科学基金51102024资助项目

作者简介: 杨现锋

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图1 渗碳温度和渗碳时间对表面电阻率的影响

图2 渗碳温度和渗碳时间对硬度的影响

图3 3Y-TZP陶瓷渗碳前和渗碳后SEM照片, 以及渗碳样品的EDS图谱和渗碳前后的XRD图谱

图4 3Y-TZP陶瓷处理前后的XPS全谱图

图5 3Y-TZP陶瓷处理前后C1s, O1s, Y3d, Zr3d XPS图谱

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