Summary of the differences between diamond single crystal and polycrystalline:Diamond is commonly known as”diamond”.That is what we often call diamond.It is a mineral composed of carbon.It is a particle material composed of elemental elements in nature.It is a carbon allotrope(diamond,graphene,fullerene,carbon nanoparticles).tube,Lonsdale stone,etc.).Diamond is the hardest substance found naturally on the earth.At the same time,diamond is not only produced on the earth.It is now found that the formation phase of diamond is also found in meteorites that fall from celestial bodies.Diamonds are used in a wide range of applications,such as cutting tools in crafts and industry.Graphite can form artificial diamond under high temperature and pressure,which is also a precious gemstone.China also has the technology to make diamonds.It should be noted that the physical properties of graphite and diamond are completely different.
1. Characteristics and differences of diamond single crystal
1. Grain structure: Diamond single crystal is prepared from a complete diamond crystal monomer The crystal structure is uniform and complete which can ensure uniform chemical and thermodynamic properties.
2. Preparation difficulty: Preparing diamond single crystal requires long-term cultivation under high temperature and high pressure conditions which is difficult to prepare and has high production cost.
3. Physical properties: Diamond single crystal has high hardness good wear resistance good thermal conductivity and high temperature resistance and can maintain stable physical and chemical properties in high temperature and high pressure environments.
4. Cutting performance: Diamond single crystal has uniform cutting performance so it is suitable for high-precision cutting processing such as semiconductor material cutting optical element cutting and other fields.
2. Characteristics and differences of diamond polycrystalline
1. Grain structure: Diamond polycrystalline is composed of multiple diamond crystals The crystal structure is uneven has certain defects and impurities and the physical properties are not as uniform as single crystals.
2. Preparation method: Preparing diamond polycrystalline is relatively simple and low-cost and is widely used in grinding wheels grinding powder and other fields.
3. Physical properties: The hardness of diamond polycrystalline is not as high as that of single crystal but it still has excellent wear resistance and thermal conductivity and can maintain a certain stability in high temperature and high pressure environments.
4. Cutting performance: The cutting performance of diamond polycrystalline is not as uniform as that of single crystal but its preparation cost is low and it is widely used.
To sum up, the difference between diamond single crystal and polycrystalline is that the grain structure and preparation method are different Single crystal has higher hardness and uniform cutting performance which is suitable for high-precision cutting processing; the physical properties of polycrystalline are not as good as single crystal but the preparation cost is low and it is widely used in grinding wheels grinding and other fields.