Abstract

The efficiency of diamomd grinding of the sapphire and polycrystalline zirconium dioxide spherical surfaces with a diamond tool based on a metal binder with a reduced spread of porous inclusions in size is experimentally investigated. The tool composite is compacted using polyethylene glycol modified with adamantane derivatives, which increases the nonlinearity of the humidifier flow at the stage of briquetting. It is shown that the amplitude of the coefficient of friction decreases by a factor of 3 when such a composite is in friction with zirconium dioxide compared to sapphire friction. In addition, scratches are observed on the polished surface of sapphire in contrast to the case of grinding of zirconium dioxide, to exclude which it is advisable to make sure that the structure of the porous space of the composite has not only a certain size distribution of porous inclusions, but also a reduced value of their most probable size. The parameters of the relative productivity and wear of the diamond tool when grinding sapphire and zirconium dioxide differ by a factor of 2 to 3 depending on the grit size of the abrasive material. The surface roughness of polycrystalline zirconium dioxide upon its fine grinding is generally four to five times lower than that of sapphire.

中文翻译：

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刀具复合材料孔隙率对蓝宝石和二氧化锆异形金刚石磨削效率的影响

摘要

实验研究了用基于金属粘合剂的金刚石工具对蓝宝石和多晶二氧化锆球形表面进行金刚石磨削的效率，并减少了多孔内含物的散布。使用金刚烷衍生物改性的聚乙二醇将工具复合材料压实，这会增加压块阶段加湿器流量的非线性。结果表明，与蓝宝石摩擦相比，当这种复合材料与二氧化锆摩擦时，摩擦系数的幅度减小了三倍。此外，与研磨二氧化锆的情况相比，在蓝宝石的抛光表面上观察到了划痕，为了排除这种情况，建议确保复合材料的多孔空间结构不仅具有一定的多孔夹杂物尺寸分布，而且具有减小的最可能尺寸的值。当研磨蓝宝石和二氧化锆时，金刚石工具的相对生产率和磨损的参数相差2到3倍，具体取决于磨料的粒度。多晶二氧化锆经过细磨后的表面粗糙度通常比蓝宝石低四到五倍。