Diamond is a suitable material for cutting applications of rocks due to its outstanding properties like high hardness, great toughness, high thermal conductivity, low friction and high wear resistance. It is therefore used as the reinforcing agent in diamond cutting tools in which diamond is dispersed in a metal matrix. As rocks may exhibit different abrasiveness due to their inherent properties in the cutting operations, composition of the metal matrix should be carefully selected based on hardness and abrasivity of rocks. One of the main criteria in this selection is to ensure that diamond and metal matrix wear are as close as possible to each other, and thus to improve the service performance of the tool during cutting. The objective of this study is therefore to enhance the cutting performance of diamond tools by determining a suitable matrix composition according to hardness and abrasiveness of the rocks. For this purpose, two metal matrix compositions of Co- and Fe-based were selected and their microstructures, mechanical properties and wear properties were comparatively investigated. Micro structural, physical and mechanical characterizations were performed by SEM-EDS, XRD, density measurement, hardness measurement, compression tests and wear tests. The cutting performance of the samples was also evaluated by on-site field tests. Results showed that the mechanical properties of different matrix composition, hardness and wear resistance of Co-based matrixes are higher than those of Fe- based matrixes. On-site field tests revealed that Fe-based matrix is more suitable for cutting marble, while Co-based matrix is more suitable for cutting granite.

金刚石具有出色的性能，例如高硬度，高韧性，高导热性，低摩擦和高耐磨性，因此它是用于岩石切割应用的合适材料。因此，它被用作金刚石切削工具中的增强剂，其中金刚石分散在金属基质中。由于岩石由于其在切割操作中的固有特性而可能表现出不同的磨蚀性，因此应根据岩石的硬度和磨蚀性仔细选择金属基体的成分。该选择的主要标准之一是确保金刚石和金属基体的磨损尽可能地接近，从而提高切削过程中刀具的使用性能。因此，本研究的目的是通过根据岩石的硬度和磨蚀性确定合适的基体成分来增强金刚石工具的切削性能。为此，选择了两种基于钴和铁的金属基体成分，并对其微观结构，机械性能和磨损性能进行了比较研究。通过SEM-EDS，XRD，密度测量，硬度测量，压缩测试和磨损测试进行了微观结构，物理和机械表征。样品的切削性能也通过现场测试进行评估。结果表明，Co基基体的不同基体组成，硬度和耐磨性的机械性能均高于Fe基基体。