title: Inhibiting the oxidation of diamond during preparing the vitrified dental grinding tools by depositing a ZnO coating using direct urea precipitation method.
abstract: Oxidation of diamond during the manufacturing of vitrified dental grinding tools would reduce the strength and sharpness of tools. Zinc oxide (ZnO) coating was deposited on diamond particles by urea precipitation method to protect diamond in borosilicate glass. The FESEM results showed that the ZnO coating was formed by plate-shaped particles. According to the TG results, the onset oxidation temperature of the ZnO-coated diamond was about 70 °C higher than the pristine diamond. The EDS results showed that ZnO diffused into the borosilicate glass during sintering. As the result, the bending strength of the composites containing ZnO-coated diamond was increased by 24% compared to that of the composites containing pristine diamond.
authors.affiliation: State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, PR China.
authors.forename: Yanhui
authors.initials: Y
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, PR China.
authors.forename: Yungang
authors.initials: Y
authors.lastname: Yuan
authors.affiliation: State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, PR China.
authors.forename: Xiaozhe
authors.initials: X
authors.lastname: Cheng
authors.affiliation: State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, PR China.
authors.forename: Xiaohu
authors.initials: X
authors.lastname: Li
authors.affiliation: State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, PR China. Electronic address: diamondzjb@163.com.
authors.forename: Jianbing
authors.initials: J
authors.lastname: Zang
authors.affiliation: The Ministry of Education Research Center for Machining of Brittle Materials, Huaqiao University, Xiamen 361021, PR China.
authors.forename: Jing
authors.initials: J
authors.lastname: Lu
authors.affiliation: The Ministry of Education Research Center for Machining of Brittle Materials, Huaqiao University, Xiamen 361021, PR China.
authors.forename: Yiqing
authors.initials: Y
authors.lastname: Yu
authors.affiliation: The Ministry of Education Research Center for Machining of Brittle Materials, Huaqiao University, Xiamen 361021, PR China. Electronic address: xpxu@hqu.edu.cn.
authors.forename: Xipeng
authors.initials: X
authors.lastname: Xu
mesh_terms: D003762:Dental Instruments; D018130:Diamond / Q000737:chemistry*; D008422:Materials Testing; D010084:Oxidation-Reduction; D014508:Urea / Q000737:chemistry*; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D018130:Diamond; D014508:Urea; D015034:Zinc Oxide
keywords: Diamond; Oxidation resistance; Vitrified bond; ZnO-coated diamond