Abstract Properties of vitrified bond with varying Ni doping amounts were extensively investigated. Effects of Ni addition on microstructures and properties of vitrified bond cubic boron nitride (CBN) composites prepared in strong magnetic field were investigated for applications in CBN grinding tools. Vitrified bond was characterized using three-point bending, scanning electron microscopy, X-ray diffraction and other methods. The refractoriness, fluidity, and bending strength of vitrified bond were evaluated. Bending strengths, microstructures, and phase compositions of vitrified bond CBN composites achieved using conventional and strong electromagnetic sintering techniques were compared. Results show that the addition of Ni to vitrified bond CBN composites improved the fluidity and bending strength of the vitrified bond. Strong electromagnetic sintering improved the mechanical strength and pore structure of vitrified bond CBN composites. Moreover, the introduction of the strong magnetic field facilitated Ni migration and aggregation in vitrified bond, rotated abrasives, and formed new substances, thus increasing the stability of vitrified bond CBN composite thermal material. Also, strong magnetic field inhibit grain growth of non-magnetic and ferromagnetic materials with fine-grain effect.

中文翻译：

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Ni添加量对陶瓷结合CBN复合材料强磁场性能的影响

摘要 对不同Ni掺杂量的玻璃化键合性能进行了广泛的研究。研究了 Ni 添加对强磁场下制备的陶瓷结合立方氮化硼 (CBN) 复合材料微观结构和性能的影响，以用于 CBN 磨具。采用三点弯曲、扫描电镜、X射线衍射等方法对陶瓷结合剂进行表征。评价了玻璃化结合剂的耐火度、流动性和弯曲强度。比较了使用传统和强电磁烧结技术获得的陶瓷结合 CBN 复合材料的弯曲强度、微观结构和相组成。结果表明，在陶瓷结合剂CBN复合材料中加入Ni提高了陶瓷结合剂的流动性和弯曲强度。强电磁烧结提高了陶瓷结合CBN复合材料的机械强度和孔结构。此外，强磁场的引入促进了Ni在陶瓷结合剂中的迁移和聚集，旋转磨料，形成新物质，从而提高了陶瓷结合剂CBN复合导热材料的稳定性。此外，强磁场抑制非磁性和铁磁性材料的晶粒生长，具有细晶粒效应。