Journal of Inorganic Materials ›› 2014, Vol. 29 ›› Issue (4): 429-432.DOI: 10.3724/SP.J.1077.2014.13290

• Research Paper • Previous Articles     Next Articles

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

LU You-Jun1, 2, WANG Yan-Min1, PAN Zhi-Dong1, HUANG Zhen-Kun2, WU Lan-Er2   

  1. (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:
  • 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

Abstract: Nanoparticle(nano-Cp)/silicon carbide(SiC) ceramics (Cp/SiC) were prepared via pressureless sintering. Effect of nano-Cp content on machinability and wettability of the Cp/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-Cp content. According to the evaluation of the machinability index(M) for ceramic materials, M15 = 0.921(for 15wt%Cp/SiC composite)>M25=0.547(for 25wt%Cp/SiC composite)>M5=0.056(for 5wt%Cp/SiC composite)>M0=0.021(for SiC ceramic). The pretreatment by oxidation of Cp 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: Cp/SiC ceramics, machinability, wettability

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