Cemented carbide, ceramics, and diamonds are all hard materials, each with its own characteristics in terms of hardness, wear resistance, toughness, and other properties.
From the perspective of hardness, diamond is the hardest substance known to date, with a hardness much higher than cemented carbide and ceramics. Cemented carbide is also quite hard, but usually lower than ceramics. Although ceramics are also very hard, they may not be as hard as diamond and specially treated cemented carbide under certain conditions.
In terms of wear resistance, diamond also performs well, with a wear resistance much higher than cemented carbide and ceramics. Cemented carbide also has good wear resistance due to the high hardness of carbides, and is suitable for a variety of wear environments. Ceramics also have good wear resistance, but it may vary depending on the material composition and preparation process.
Toughness is an important indicator for evaluating the material's ability to resist impact and fracture. In this regard, cemented carbide performs well, has a certain strength and toughness, and can withstand a certain impact load. In contrast, ceramics have poor toughness and are prone to fracture when impacted. Although diamond has extremely high hardness, its toughness is relatively poor, especially under certain conditions, it may show brittleness.
In addition to hardness and wear resistance, the thermal stability of the material is also an important performance indicator. Diamond loses its hardness at high temperatures, so its thermal stability is low. Cemented carbide and ceramics have good thermal stability and can maintain high hardness and strength in high temperature environments.
In terms of chemical stability, ceramics show excellent oxidation resistance and corrosion resistance, and can remain stable in harsh chemical environments. Cemented carbide also has a certain chemical stability, but it may vary depending on the composition of the material. Although diamond has extremely high hardness, it may also react in certain chemical environments.
From the perspective of application range, cemented carbide is widely used in cutting tools, molds and other fields because of its strong versatility and high cost performance. Ceramics are used to manufacture certain special parts, such as high-temperature furnaces, wear-resistant parts, etc. due to their high hardness, high wear resistance and chemical stability. Diamond is used to process hard materials such as stone and ceramics due to its extremely high hardness and wear resistance.
Cemented carbide, ceramics and diamond each have their own advantages and disadvantages in terms of hardness, wear resistance, toughness, thermal stability and chemical stability. When selecting materials, it is necessary to make comprehensive considerations based on specific application scenarios and requirements.
