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DPC ceramics are made with advanced ceramic materials

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1.DPC ceramics, the definition of advanced ceramic materials
Advanced ceramic materials, also known as fine ceramic materials, are excellent products made of exquisite high-purity, ultra-fine inorganic compounds and advanced preparation technology.
According to the engineering technology's demand for product application functions, the products can be manufactured with piezoelectric, ferroelectric, conductive, semiconductor, magnetic, etc. or have high strength, high toughness, high hardness, wear resistance, corrosion resistance, high temperature resistance, high thermal conductivity, Excellent function of insulation or outstanding biocompatibility.
2. Classification of advanced ceramic materials
According to different uses, advanced ceramic materials can be divided into structural ceramics, tool ceramics, and functional ceramics.
(1) Structural ceramics
The primary materials for structural ceramics are alumina ceramics (Al2O3), silicon nitride ceramics (Si3N4), silicon carbide ceramics (SiC), hexagonal boron nitride ceramics (BN), and the like.
1) Alumina ceramic (Al2O3)

The primary composition of alumina ceramics is Al2O3, which is generally greater than 45%. Alumina ceramics have various excellent functions. High temperature resistance, generally can be used for 1600 °C for a long time, corrosion resistance, high strength, its strength is 2 to 3 times that of ordinary ceramics, and the highest is 5 to 6 times. The disadvantage is that it is brittle and cannot accept sudden changes in ambient temperature. It is extremely common and can be used as a sputum, a recommended spark plug, a high temperature refractory, a thermowell, a seal ring, etc. It can also be used as a tool and a mold.

DPC ceramics

2) Silicon nitride ceramic (Si3N4)
The primary composition of silicon nitride ceramics is Si3N4, which is a high-temperature ceramic with high temperature strength, high hardness, wear resistance, corrosion resistance and self-lubrication. The linear shrinkage coefficient is the smallest among various ceramics, and the operating temperature is up to 1400 °C. It has excellent corrosion resistance, in addition to hydrofluoric acid, it can withstand the corrosion of other various acids, and can resist alkali and various metal corrosion, and has excellent electrical insulation and radiation resistance. It can be used as a high temperature bearing, a sealing ring used in corrosive media, a thermowell, or as a metal cutting tool.
3) Silicon Carbide Ceramics (SiC)
The primary composition of silicon carbide ceramics is SiC, which is a high-strength, high-hardness, high-temperature resistant ceramic. It can still maintain high flexural strength at 1200 ° C ~ 1400 ° C. It is the highest temperature high strength ceramic, silicon carbide ceramic. It also has outstanding thermal conductivity, oxidation resistance, electrical conductivity and high impact toughness. It is an outstanding high-temperature structural material that can be used for components such as rocket tail nozzle nozzles, thermowells, furnace tubes, etc.; its thermal conductivity can be used to make thermal communicator materials at high temperatures; its high hardness and Wear-resistant wheels, abrasives, etc.
4) Hexagonal boron nitride ceramics (BN)
DPC ceramics, hexagonal boron nitride ceramics are the primary component of BN, and the crystal structure is hexagonal. The structure and function of hexagonal boron nitride are similar to those of graphite. Therefore, it has the name of “white graphite” and has low hardness and can be processed by cutting. Self-lubricating, it can be made into self-lubricating high temperature bearings, glass forming dies, etc.
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