The vacuum impregnation method was employed to produce two batches of tubular drills, incorporating AS200 500/400 diamond grains in a Cu–15 wt.% Sn metal matrix. In one batch, ASM 1/0 ultradispersed diamond powders (UDDPs) were added as a reinforcement to matrices in some tools. In the other batch, the reinforcement was tin. The concentration of ASM 1/0 additives ranged from 1 to 11 wt.% and that of tin from 1 to 10 wt.%. Comparative laboratory tests for drilling porcelain, granite, and SiC-based abrasive stone were conducted using these diamond drills. Performance characteristics such as drill wear and drilling speed were examined. The hardness of matrix samples containing additives, but without AS200 500/400 diamond grains, produced by the vacuum fusion method was determined. In drilling the examined materials, UDDPs reduced the wear of diamond drills through the reinforcing effect and increased matrix hardness. The optimal concentration of UDDPs was found to be 5 wt.% (9 wt.% for porcelain). A further increase in the concentration of such additives led to higher wear of the drills as porosity that appeared in the matrix reduced diamond grain retention. The addition of tin to the matrix also decreased the wear of diamond drills, with the minimum wear observed when approximately 4 wt.% Sn was introduced into the matrix. Increasing the tin concentration in the matrix beyond this point resulted in higher drill wear because of brittle intermetallics, which also reduced the strength of diamond retention. The diamond drills with UDDP additives exhibited higher drilling speeds that those with tin additives. Furthermore, the drilling speed for porcelain and granite decreased with the introduction of tin up to 4 wt.% because of the ‘blunting’ effect. The diamond drills with a UDDP-reinforced matrix demonstrated better performance characteristics, including reduced wear and higher drilling speed.

采用真空浸渍方法生产了两批管状钻头，其中将 AS200 500/400 金刚石颗粒掺入 Cu-15 wt.% Sn 金属基体中。在一批中，一些工具中添加了 ASM 1/0 超分散金刚石粉末 (UDDP) 作为基质的增强材料。在另一批中，加固材料是锡。ASM 1/0 添加剂的浓度范围为 1 至 11 wt.%，锡的浓度范围为 1 至 10 wt.%。使用这些金刚石钻头进行了对陶瓷、花岗岩和碳化硅基磨石进行钻孔的对比实验室测试。检查了钻头磨损和钻孔速度等性能特征。测定了通过真空熔融法生产的含有添加剂但不含 AS200 500/400 金刚石颗粒的基体样品的硬度。在钻探所检查的材料时，UDDP 通过增强作用和增加基体硬度来减少金刚石钻头的磨损。UDDP 的最佳浓度为 5 wt.%（瓷器为 9 wt.%）。此类添加剂浓度的进一步增加导致钻头磨损加剧，因为基体中出现的孔隙减少了金刚石颗粒的保留。向基体中添加锡还降低了金刚石钻头的磨损，当向基体中引入约 4 wt.% 的锡时，观察到的磨损最小。将基体中的锡浓度增加到超过这一点，会由于脆性金属间化合物而导致钻头磨损加剧，这也会降低金刚石的固位强度。含有 UDDP 添加剂的金刚石钻头比含有锡添加剂的金刚石钻头表现出更高的钻孔速度。此外，由于“钝化”效应，当锡的引入量达到 4 wt.% 时，瓷器和花岗岩的钻孔速度会降低。具有 UDDP 增强基体的金刚石钻头表现出更好的性能特征，包括减少磨损和更高的钻孔速度。