Effect of ZrO₂ content on the properties of diamond grinding wheel vitrified bond

Abstract

The effect of ZrO₂ content on the performance of vitrified bond was discussed. The results showed that when the ZrO₂ content was less than 2 mol%, Zr⁴⁺ could enter into the glassy network as mending nets and agglomeration composition. In this case, with the increasing of ZrO₂, the vitrified bond’s bending strength increased and the expansion coefficient decreased. It was also found that the wetting angle between the vitrified bond and diamond got small because Zr⁴⁺ was enriched on diamond surface. When ZrO₂ content was more than 2 mol%, a part of ZrO₂ existing in vitrified bond as ZrO₂ particles played the role in nucleating agents and promoting the separation of spodumene. When ZrO₂ content was 3 mol%, the bending strength of the vitrified bond reached its maximum of 128 MPa and the wetting angle with the diamond reached its minimum of 37.6°.

Keywords

ZrO₂ / vitrified bond / bending strength / expansion coefficient / wetting angle

References

[1] Yasuyuki K, Yoshihito K, Shojiro O Development of Vitrified Diamond Grinding Wheel for Engineering Ceramics[J]. Japan Grain Institute, 1993, 67(9): 87-89.

[2] Mamails A G, Horvath M, Grabchenko A I Diamond Grinding of Super-Hard Materials[J]. Journal of Materials Processing Technology, 2000, 97(11): 120-125.

[3] Zhou Y, Atwood M Wear and Self-shapening of Vitrified Bond Diamond Wheels During Sapphire Grinding[J]. Wear, 1998, 219(4): 42-45.

[4] Jackson M J, Mills B Materials Selection Applied to Vitrified Alumina and CBN Grinding Wheels[J]. Journal of Materials Processing Technology, 2000, 108: 114-124.

[5] West A R, Glasser F P Crystallization of Lithium Zinc SilicatesI. Phase in the Equilibrium System Li₄SiO₄-Zr₂SiO₄[J]. J.Mater.Sci., 1970, 5: 557-565.

[6] Tao H Z, Lin C G, Gu S X, . Optical Second Order Nonlinearity of the Infrared Transmitting 82GeS₂·18CdGa₂S₄ Nanocrystallized Chalcogenide Glass[J]. Applied Physics Letters, 2007, 91(1): 011 904

[7] Chen H P, Tao H Z, Wu Q D, . Crystallization Kinetics of Superionic Conductive Al(B, La)-Incorporated LiTi₂(PO₄)₃ Glass-Ceramics[J]. Journal of the American Ceramic Society, 2013, 96(3): 801-805.

[8] Tao H Z, Zhao X J, Liu Q M Optical Non-linearity in Nano- and Micro-crystallized Glasses[J]. Journal of Non-Crystalline Solids, 2013, 377: 146-150.

[9] Liu X P, Wan L, Hu W D Effect of TiO₂ Films on Diamond: Oxidation Resistance and Wear Performance[J]. Advances in Applied Ceramics, 2009, 106(8): 501-50.

[10] Hou Y-g, Qiao G-y Effect of Porosity on the Grinding Performance of Vitrified Bond Diamond Wheels for Grinding PCD Blades[J]. Ceramics International, 2012, 38(8): 6 215-6 220.