Nano silylation modification of diamond powder surface and its oxidation resistance
Using sol-gel technology and hydrolysis condensation reaction of tetraethyl orthosilicate (TEOS)，a nano silica amorphous gel film with a thickness of 2～10 nm and rich in active oxygen groups is coated on the surface of diamond powder. When the gel film is heated to a certain temperature, the silicon...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Zhengzhou Research Institute for Abrasives & Grinding Co., Ltd.
2022-08-01
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| Series: | Jin'gangshi yu moliao moju gongcheng |
| Subjects: | |
| Online Access: | http://www.jgszz.cn/article/doi/10.13394/j.cnki.jgszz.2022.0100 |
| _version_ | 1797635891644071936 |
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| author | Aihong PANG Xinran DONG Junyan DONG Fangren SHEN Suling TAN Chenchao JIA Shushan DONG Qingqing MAO Zengfeng WU |
| author_facet | Aihong PANG Xinran DONG Junyan DONG Fangren SHEN Suling TAN Chenchao JIA Shushan DONG Qingqing MAO Zengfeng WU |
| author_sort | Aihong PANG |
| collection | DOAJ |
| description | Using sol-gel technology and hydrolysis condensation reaction of tetraethyl orthosilicate (TEOS)，a nano silica amorphous gel film with a thickness of 2～10 nm and rich in active oxygen groups is coated on the surface of diamond powder. When the gel film is heated to a certain temperature, the silicon dioxide in it can change from amorphous phase to crystalline phase. The initial oxidation temperature of diamond powder in air increases from 500 ℃ of raw diamond to 550 ℃ after TEOS coating modification. After adding nano silicon powder to TEOS coating, the initial oxidation temperature of diamond powder sample in air can be further increased to 610 ℃. After 800 ℃ heat treatment, the residual amount of the sample is significantly higher than that of the raw diamond, which indicates that the high temperature oxidation resistance of diamond powder can be further improved by adding nano silicon powder to TEOS coating. The rich reactive oxygen groups in TEOS coating can produce chemical reaction with resin/ceramic bond, which is conducive to improving the holding force of bond on diamond, and can provide good functional modified raw materials for preparing high-performance resin/ceramic bond diamond tools. |
| first_indexed | 2024-03-11T12:26:34Z |
| format | Article |
| id | doaj.art-47d87ea1661c4584af22fa66a0e8caef |
| institution | Directory Open Access Journal |
| issn | 1006-852X |
| language | zho |
| last_indexed | 2024-03-11T12:26:34Z |
| publishDate | 2022-08-01 |
| publisher | Zhengzhou Research Institute for Abrasives & Grinding Co., Ltd. |
| record_format | Article |
| series | Jin'gangshi yu moliao moju gongcheng |
| spelling | doaj.art-47d87ea1661c4584af22fa66a0e8caef2023-11-06T08:38:57ZzhoZhengzhou Research Institute for Abrasives & Grinding Co., Ltd.Jin'gangshi yu moliao moju gongcheng1006-852X2022-08-0142441042010.13394/j.cnki.jgszz.2022.0100PANGAIHONGNano silylation modification of diamond powder surface and its oxidation resistanceAihong PANG0Xinran DONG1Junyan DONG2Fangren SHEN3Suling TAN4Chenchao JIA5Shushan DONG6Qingqing MAO7Zengfeng WU8Henan Hold Diamond Technology Co., Ltd., Shangqiu 476000, Henan, ChinaState Key Laboratory of Superhard Materials, Jilin University, Changchun 130000, ChinaState Key Laboratory of Superhard Materials, Jilin University, Changchun 130000, ChinaThermo Fisher Scientific China, Shanghai 200000, ChinaHenan Hold Diamond Technology Co., Ltd., Shangqiu 476000, Henan, ChinaHenan Hold Diamond Technology Co., Ltd., Shangqiu 476000, Henan, ChinaState Key Laboratory of Superhard Materials, Jilin University, Changchun 130000, ChinaHenan Hold Diamond Technology Co., Ltd., Shangqiu 476000, Henan, ChinaHenan Hold Diamond Technology Co., Ltd., Shangqiu 476000, Henan, ChinaUsing sol-gel technology and hydrolysis condensation reaction of tetraethyl orthosilicate (TEOS)，a nano silica amorphous gel film with a thickness of 2～10 nm and rich in active oxygen groups is coated on the surface of diamond powder. When the gel film is heated to a certain temperature, the silicon dioxide in it can change from amorphous phase to crystalline phase. The initial oxidation temperature of diamond powder in air increases from 500 ℃ of raw diamond to 550 ℃ after TEOS coating modification. After adding nano silicon powder to TEOS coating, the initial oxidation temperature of diamond powder sample in air can be further increased to 610 ℃. After 800 ℃ heat treatment, the residual amount of the sample is significantly higher than that of the raw diamond, which indicates that the high temperature oxidation resistance of diamond powder can be further improved by adding nano silicon powder to TEOS coating. The rich reactive oxygen groups in TEOS coating can produce chemical reaction with resin/ceramic bond, which is conducive to improving the holding force of bond on diamond, and can provide good functional modified raw materials for preparing high-performance resin/ceramic bond diamond tools.http://www.jgszz.cn/article/doi/10.13394/j.cnki.jgszz.2022.0100diamond surface modificationtetraethyl orthosilicate (teos)amorphous sio2 filmsol-gel methoddifferential thermal analysis |
| spellingShingle | Aihong PANG Xinran DONG Junyan DONG Fangren SHEN Suling TAN Chenchao JIA Shushan DONG Qingqing MAO Zengfeng WU Nano silylation modification of diamond powder surface and its oxidation resistance Jin'gangshi yu moliao moju gongcheng diamond surface modification tetraethyl orthosilicate (teos) amorphous sio2 film sol-gel method differential thermal analysis |
| title | Nano silylation modification of diamond powder surface and its oxidation resistance |
| title_full | Nano silylation modification of diamond powder surface and its oxidation resistance |
| title_fullStr | Nano silylation modification of diamond powder surface and its oxidation resistance |
| title_full_unstemmed | Nano silylation modification of diamond powder surface and its oxidation resistance |
| title_short | Nano silylation modification of diamond powder surface and its oxidation resistance |
| title_sort | nano silylation modification of diamond powder surface and its oxidation resistance |
| topic | diamond surface modification tetraethyl orthosilicate (teos) amorphous sio2 film sol-gel method differential thermal analysis |
| url | http://www.jgszz.cn/article/doi/10.13394/j.cnki.jgszz.2022.0100 |
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