Effects of titania films on the oxidation resistance and dispersibility of ultrafine diamond
Effects of titania films on the oxidation resistance and dispersibility of ultrafine diamond
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DOI：
10.1016/j.matlet.2014.11.039
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发表时间：
2015-02
影响因子：
3
通讯作者：
N. Yan;Weipeng Miao;Yu-cheng Zhao;Mingyao Liu;Liping Wang;Y. Li;Dongpeng Zhao;Q. Zou;Mingzhi W
中科院分区：
文献类型：
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作者：
N. Yan;Weipeng Miao;Yu-cheng Zhao;Mingyao Liu;Liping Wang;Y. Li;Dongpeng Zhao;Q. Zou;Mingzhi W
Titania-coated ultrafine diamond (UFD/TiO2) composites had been prepared successfully, which were the core/shell structures with amorphous titania shells of approximately 4 nm thickness using tetrabutyl titanate (TBOT) as the precursor of titania in acidic condition via sol–gel process. It had a great influence on the synthesis of UFD/TiO2composites to control the hydrolysis and polymerization of TBOT. Contrasting to the pristine ultrafine diamond powders (UFDs), the coated UFDs could be kept dispersed in the multi-component inorganic salts aqueous solution at least 12 h without aggregation. More importantly, the oxidation resistance temperature of the coated UFDs was enhanced nearly 150 °C than the pristine, improving greatly the sintering temperature of UFD-vitrified bond composite powers obtained by polyacrylamide gel (P–G) method.
