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Vol. 25 No. 3 (2013): Vol 25 Issue 3

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Preparation of Diamond/Ceramic Composite by Sol-Gel Method and Its Physical Properties

https://doi.org/10.14233/ajchem.2013.12971
Kai Gao
Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, P.R. China
Zhihong Li
Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, P.R. China
Li Na
Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, P.R. China
Dongdong Shan
Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, P.R. China
Kaiyue Wang
Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, P.R. China
Yumei Zhu
Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, P.R. China

Corresponding Author(s) : Yumei Zhu

kai781231@yahoo.com.cn

Asian Journal of Chemistry, Vol. 25 No. 3 (2013): Vol 25 Issue 3

Abstract

A diamond/ceramic composite was fabricated by sintering a composite precursor composed of a synthetic collosol and gelatine and thus the SiO2-Al2O3-B2O3-CaO-MgO-ZnO-K2O-Li2O ceramic phase was introduced into diamond powder. The gelatine powder was characterized with DSC, FTIR, SEM, EDS and XRD after thermal treatment. Results showed that the sol-gel method had dramatically reduced the softening temperature of the glass and the dose of the alkali metal added could be well-controlled. Meanwhile, the dielectric loss was ultimately reduced and the resistance and dielectric property of the sheet-shaped composite was calculated by means of a resonance circuit at high frequency. The results indicated that the resistance of diamond massive composite was slightly larger than that of diamond thin-film, while the dielectric loss of the former was less than 0.002 and lower than the latter.

Keywords

Sol-gel Ceramic Coating Dielectric material Diamond composite
Gao, K., Li, Z., Na, L., Shan, D., Wang, K., & Zhu, Y. (2012). Preparation of Diamond/Ceramic Composite by Sol-Gel Method and Its Physical Properties. Asian Journal of Chemistry, 25(3), 1319–1323. https://doi.org/10.14233/ajchem.2013.12971
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