CN 41-1243/TG ISSN 1006-852X
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Effect of B2O3on the structure and properties of SiO2-B2O3-Al2O3-Na2O system ceramic bond[J]. Diamond &Abrasives Engineering. doi: 10.13394/j.cnki.jgszz.2022.0041
Citation: Effect of B2O3on the structure and properties of SiO2-B2O3-Al2O3-Na2O system ceramic bond[J]. Diamond &Abrasives Engineering. doi: 10.13394/j.cnki.jgszz.2022.0041

Effect of B2O3on the structure and properties of SiO2-B2O3-Al2O3-Na2O system ceramic bond

doi: 10.13394/j.cnki.jgszz.2022.0041
  • Received Date: 2022-04-09
  • Accepted Date: 2022-07-12
  • Rev Recd Date: 2022-07-02
  • Available Online: 2022-07-13
  • The effective reduction of sintering temperature and thermal expansion coefficient of ceramic bond used for superhard abrasives is one of the research hotspots in this field. In this paper, SiO2-B2O3-Al2O3-Na2O glass samples and ceramic bond series samples with different B2O3 contents were prepared, using electronic multi-function experimental machine, scanning electron microscope, microhardness tester, plane flow method, thermal expansion coefficient tester and other instruments. The density and microhardness of different glass samples, the bending strength and micromorphology and thermal expansion coefficient of the bond samples were measured respectively. The structure and composition of the ceramic bond were analyzed by X-ray diffrotometry and Fourier transform infrared spectroscopy (FTIR). The results show that the introduction of B2O3 into the ceramic binder can effectively reduce the sintering temperature, improve the thermal stability, adjust the thermal expansion coefficient and other functions, among which, the highest bending strength of the ceramic binder spline with 15mol% B2O3 is 78.11MPa, the density and hardness of glass are the highest, 2.45g/cm3 and 856MPa, respectively. In addition, the thermal expansion coefficient of the ceramic bond with 7mol% B2O3 is the best match for diamond. X-ray diffractometer results show that the ceramic binder has a typical glass phase structure, which will play a good coating bonding effect on the abrasive. The influence of B2O3 on the structure and properties of ceramic bond in borosilicate glass system was discussed.

     

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      沈阳化工大学材料科学与工程学院 沈阳 110142

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