Effect of heat treatments on the Li2O-Al2O3-SiO2-B2O3-BaO glass-ceramic bond and the glass-ceramic bond cBN grinding tools

被引：26
作者：
Shi, Jiang [1 ,2 ]
He, Feng [1 ,2 ]
Xie, Junlin [1 ,2 ]
Liu, Xiaoqing [3 ]
Yang, Hu [2 ]
机构：
[1] Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Hubei, Peoples R China
[2] Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan 430070, Hubei, Peoples R China
[3] Wuhan Univ Technol, Ctr Mat Res & Anal, Wuhan 430070, Hubei, Peoples R China
来源：
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2019年 / 78卷
关键词：
Heat treatments; Glass-ceramic bond; cBN; Mechanical property; Chemical bonds; CUBIC BORON-NITRIDE; LOW SINTERING TEMPERATURE; LZAS VITRIFIED BOND; PHYSICAL-PROPERTIES; CRYSTALLIZATION; DIAMOND; MICROSTRUCTURE; Y2O3; PARAMETERS; B2O3;
D O I：
10.1016/j.ijrmhm.2018.09.015
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Influence of heat treatments on the Li2O-Al2O3-SiO2-B2O3-BaO glass-ceramic bond and the glass-ceramic bond cBN grinding tools had been methodically discussed. The results revealed that the different heat treatments mainly varied the content of LiAlSi2O8 and LiAlSi3O8 in the glass-ceramic bonds which in turn resulted in the variation of bonds' CTE and affected the performance of glass-ceramic bond cBN grinding tools in bending strength. In addition, results of XPS indicated chemical bonds such as N-Al, N-Si, and N-Li bonds were generated at the interface between the bonds and cBN abrasives during the sintering process, which acted as a vital part in improving the holding power for the bonding of glass-ceramic bonds and cBN abrasives. In this study, glass-ceramic bond cBN grinding tools sintered at 860 degrees C for 120 min presented the highest bending strength (89.71 MPa) with the highest potential for high performance grinding tools among all the samples.
引用
收藏
页码：201 / 209
页数：9
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