立方氮化硼ZnO-Al2O3-SiO2系统微晶玻璃结合剂的研究 The Research on ZnO-Al2O3-SiO2 (ZAS) Crystallite Glass Systems for Cubic Boron Nitride Ceramic Bond

利用DTA，XRD，SEM、差热膨胀分析等实验手段，对ZnO-Al2O3-SiO2系统微晶玻璃的成核、烧结和晶化行为进行了研究；对烧结体的力学性能、热膨胀性能和合理的热处理工艺条件进行了测定；测试了以ZAS系统微晶玻璃为结合剂的立方氮化硼砂轮的力学性能和磨削性能。 The nucleation and crystallization behaviour of ZnO-Al2O3-SiO2 (ZAS) glass systems and sintering process of glass powder were studied by means of DTA, XRD, SEM, differential thermal expansion analysis etc. The optimum shaping technique and Thermal Coefficients of Expansion (TCE) of the glass ceramics were measured. The mechanical and grinding properties of the CBN grinding wheel bonded with ZAS glass ceramics were also tested.