The effect of TiO2/Al2O3 film on the properties of diamond and diamond/glass composites

被引：0
作者：
Hu, Weida [1 ]
Wan, Long [1 ]
Liu, Xiaopan [1 ]
Wang, Junsha [1 ]
Zhai, Haochong [1 ]
机构：
[1] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China
来源：
JOURNAL OF CERAMIC PROCESSING RESEARCH | 2012年 / 13卷 / 04期
关键词：
Diamond; TiO2; Al2O3; Sol-gel; Glass; COATED DIAMOND; THERMAL-CONDUCTIVITY; GRINDING WHEELS; WEAR; PERFORMANCE; PARTICLES; POWDERS; GRITS;
D O I：
暂无
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A titania/alumina (TiO2/Al2O3) film was coated on surface of diamond abrasive particles via a sol-gel technique. The effects of TiO2/Al2O3 film on the properties of diamonds and diamond/glass composites were investigated. The results showed that the TiO2/Al2O3 film could effectively improve the oxidation resistance of diamond, where the initial oxidation temperature of diamond was 600 degrees C in an air environment while oxidation of the TiO2/Al2O3 film coated diamond could not be found below 775 degrees C. For a mechanical property investigation, the TiO2/Al2O3 film coated diamond had a better compressive fracture strength (CFS) than that of the uncoated diamond after sintering. When the surface of a diamond was coated with a TiO2/Al2O3 film, the contact angle between liquid glass and diamond film decreased from 105 degrees to 60 degrees at 750 degrees C. For the application of the TiO2/Al2O3 film coated diamond to diamond/glass composites, it was evident that the performance of the composites was improved.
引用
收藏
页码：353 / 358
页数：6
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