纳米碳含量对碳/碳化硅陶瓷的机械加工性及与玻璃熔体润湿性的影响

doi:10.3724/SP.J.1077.2014.13290

无机材料学报 ›› 2014, Vol. 29 ›› Issue (4): 429-432.DOI: 10.3724/SP.J.1077.2014.13290 CSTR: 32189.14.SP.J.1077.2014.13290

纳米碳含量对碳/碳化硅陶瓷的机械加工性及与玻璃熔体润湿性的影响

陆有军^{1, 2}, 王燕民¹, 潘志东¹, 黄振坤², 吴澜尔²

(1. 华南理工大学材料科学与工程学院, 广州510640; 2. 北方民族大学材料科学与工程学院, 银川750021)

收稿日期:2013-05-27 修回日期:2013-10-18 出版日期:2014-04-20 网络出版日期:2014-03-24
作者简介:陆有军(1976–), 男, 副教授, 博士研究生. E-mail: youjunlu518@hotmail.com
基金资助:
国家自然科学基金(50962001); 中科院‘西部之光’人才培养计划项目; 北方民族大学国基金培育项目

Effect of Carbon Nanoparticle Content on Machinability and Wettability of Carbon/Silicon Carbide Ceramics

LU You-Jun^{1, 2}, WANG Yan-Min¹, PAN Zhi-Dong¹, HUANG Zhen-Kun², WU Lan-Er²

(1.College of Materials Science & Engineering, South China University of Technology, Guangzhou 510640, China; 2. College of Materials Science & Engineering, Beifang University of Nationalities, Yinchuan 750021, China)

Received:2013-05-27 Revised:2013-10-18 Published:2014-04-20 Online:2014-03-24
About author:LU You-Jun. E-mail: youjunlu518@hotmail.com
Supported by:
National Natural Science Foundation of China (50962001); ‘The Western Light’ of CAS for the Talent Cultivation Project; The Breeding Programs of NSFC of Beifang University of Nationalities

摘要/Abstract

摘要： 采用无压烧结法制备纳米碳颗粒(nano-Cp)改性碳化硅陶瓷 (C_p/SiC), 研究了不同纳米碳含量对C_p/SiC陶瓷的机械加工性及与玻璃熔体润湿性的影响。通过XRD和SEM对C_p/SiC陶瓷进行物相和显微分析。研究结果表明: 随着可加工相纳米碳含量的增加, C_p/SiC陶瓷的机械加工性能得到明显改善。根据陶瓷材料的机械加工指数(M)综合评价, M₁₅=0.921＞M₂₅=0.547＞M₅=0.056＞M₀=0.021(下标数字代表碳含量), 且15wt%C_p/SiC中的碳颗粒预先被氧化, 抑制了C_p/SiC陶瓷基体表面形成SiO₂, 阻止了C_p/SiC陶瓷与玻璃熔体的润湿, 使夹具材料与玻璃熔体不发生粘接, 适合用作玻璃夹具材料。

关键词: 碳/碳化硅复合陶瓷, 机械加工性, 润湿性

Abstract: Nanoparticle(nano-C_p)/silicon carbide(SiC) ceramics (C_p/SiC) were prepared via pressureless sintering. Effect of nano-C_p content on machinability and wettability of the C_p/SiC ceramics as a glass clamp was investigated. Phase composition and morphology of the ceramics were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM), respectively. Results show that the machinability of the ceramics increases with the increase of the nano-C_p content. According to the evaluation of the machinability index(M) for ceramic materials, M₁₅ = 0.921(for 15wt%C_p/SiC composite)＞M₂₅=0.547(for 25wt%C_p/SiC composite)＞M₅=0.056(for 5wt%C_p/SiC composite)＞M₀=0.021(for SiC ceramic). The pretreatment by oxidation of C_p in the ceramics could depress the formation of SiO₂ film on the surface of SiC, thus preventing the wettability between the ceramics and glass smelt and hindering the splice of the fixture material with glass smelt.

Key words: C_p/SiC ceramics, machinability, wettability

中图分类号:

TQ174

陆有军, 王燕民, 潘志东, 黄振坤, 吴澜尔. 纳米碳含量对碳/碳化硅陶瓷的机械加工性及与玻璃熔体润湿性的影响[J]. 无机材料学报, 2014, 29(4): 429-432.

LU You-Jun, WANG Yan-Min, PAN Zhi-Dong, HUANG Zhen-Kun, WU Lan-Er. Effect of Carbon Nanoparticle Content on Machinability and Wettability of Carbon/Silicon Carbide Ceramics[J]. Journal of Inorganic Materials, 2014, 29(4): 429-432.

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纳米碳含量对碳/碳化硅陶瓷的机械加工性及与玻璃熔体润湿性的影响

Effect of Carbon Nanoparticle Content on Machinability and Wettability of Carbon/Silicon Carbide Ceramics

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