The main reason why diamond composite sheets are so widely used in industrial society is that diamond composite sheets have unparalleled properties of other materials. Today, I will analyze the superior performance of the diamond composite sheet for everyone: 　

 

1. The diamond composite sheet has high hardness and wear resistance (abrasion ratio). The hardness of diamond composite sheet is as high as about 10 000 HV, which is currently the hardest material in man-made materials in the world. It is much higher than the hardness of cemented carbide and engineering ceramics. Due to the extremely high hardness and isotropy, it has excellent wear resistance. Generally, the wear resistance of the composite sheet is reflected by the abrasion ratio. In the 1980s to the mid-1990s, the composite sheet abrasion ratio was 40,000 to 60,000 (80,000 to 120,000 abroad); from the mid-1990s to the present, the composite sheet The wear ratio is 80,000 to 300,000 (100,000 to 500,000 abroad); 　

　

2. The diamond composite sheet has thermal stability. The thermal stability of the diamond composite sheet determines its scope of use. The thermal stability of the diamond composite sheet is the heat resistance. Like its strength and wear ratio, it is one of the important performance indicators to measure the quality of the diamond composite sheet. Heat-resistant stability refers to the stability of the chemical properties of the polycrystalline layer (the degree of diamond inking), the change of macro-mechanical properties, and the bonding of the composite layer after heating to a certain temperature in the atmosphere (the presence of oxygen) The impact of firmness. Changes in thermal stability After sintering at 750°C, some domestic manufacturers’ products showed an increase in abrasion ratio of 5% to 20%, with little change in impact toughness, and a decrease in abrasion ratio and impact resistance of some manufacturers’ products. The formula and process used are different, and the wear ratio and impact toughness of foreign diamond composites do not change much before and after sintering;