Oxidization of diamond grits in diamond/borosilicate glass composites

ZHANG Xianghong; WANG Yanhui; ZANG Jianbing; ZHANG Jinhui

doi:10.13394/j.cnki.jgszz.2021.3010

Volume 42 Issue 3

Jul. 2022

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ZHANG Xianghong, WANG Yanhui, ZANG Jianbing, ZHANG Jinhui. Oxidization of diamond grits in diamond/borosilicate glass composites[J]. Diamond & Abrasives Engineering, 2022, 42(3): 373-378. doi: 10.13394/j.cnki.jgszz.2021.3010

Citation:

ZHANG Xianghong, WANG Yanhui, ZANG Jianbing, ZHANG Jinhui. Oxidization of diamond grits in diamond/borosilicate glass composites[J]. Diamond & Abrasives Engineering, 2022, 42(3): 373-378. doi: 10.13394/j.cnki.jgszz.2021.3010

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Oxidization of diamond grits in diamond/borosilicate glass composites

doi: 10.13394/j.cnki.jgszz.2021.3010

1.
Hebei Vocational & Technical College of Building Materials, Qinhuangdao 066004, Hebei, China
2.
School of Materials Science and Engineering, State Key Laboratory of Metastable Materials Science & Technology, Yanshan University, Qinhuangdao 066004, Hebei, China
3.
Department of Environmental and Chemical Engineering, Tangshan University, Tangshan 063000, Hebei, China

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Received Date: 2022-02-04
Accepted Date: 2022-03-04
Rev Recd Date: 2022-03-01

Abstract

Abstract

The oxidation reaction mechanism of diamond grits in diamond/borosilicate glass composites was studied. The composites were sintered at different conditions and the samples were analyzed through TG–DSC, XRD and Raman. The results showed no chemical reaction occurred when borosilicate glass was sintered below 1000 ℃. But when sintering diamond/borosilicate glass composites at temperatures above 814 ℃, there appeared volume expansion and bending strength decreasing. The volume expansion is 10% and the bending strength is 39.0 MPa when the composites are sintered at 780 ℃. Through thermodynamic analysis, XDR analysis and Raman analysis, it is found that when the sintering temperature is lower than 908.4 ℃, the diamond is oxidized by the free oxygen other than the oxides in the glass.
- borosilicate glass,
- diamond,
- oxidation reaction mechanism

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References(18)

References

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