Alumina:
1. High temperature resistance up to 1600 ℃
2. High hardness Vickers hardness 1500Kg/mm2 (HV0.5), its hardness is second only to diamond
3. The specific gravity is small and the density is 3.65g/cm3, which is only half of that of steel, which can greatly reduce the equipment load
4. Environmental Aluminum Nitride Plate protection and insulation
Aluminum Nitride:
1. The decomposition temperature of high-temperature resistant materials at room temperature can reach 2450 ℃
2. Good thermal conductivity, thermal conductivity up to 260W/mK, 5-8 times higher than alumina
3. Corrosion resistance: It is not corroded by aluminum liquid, other molten metals and gallium arsenide
4. Good mechanical properties, bending strength higher than Al2O3 and BeO ceramics, can be sintered under normal pressure
Silicon nitride:
1. Corrosion resistance, low thermal conductivity compared with metal, saving fuel, and improving thermal efficiency
2. Strong oxidation resistance at high temperature, able to resist cold and hot shock
3. Higher hardness and lubricity
4. Atomic crystal with good wear resistance
Beryllium oxide:
1. The thermal conductivity is 6~7 times of dense Al2O3 and Ceramic Disc 3 times of MgO
2. The specific volume resistance of high temperature electrical insulation is 4 at 600 ℃ × 1010 Ω· m, 5 at 800 ℃ × 109 ω· m, its dielectric constant increases slightly with the temperature rise.
3. Moisture resistance and corrosion resistance BeO ceramics have excellent moisture resistance and corrosion resistance
Silicon carbide:
1. Excellent wear resistance to reduce equipment wear and maintenance frequency and cost
2. It has high strength, high hardness and light weight. When it is used, it will be more convenient to install and replace
3. The inner wall is smooth, and the use of powder without blocking will be more beautiful
Boron nitride:
1 Good thermal stability
2. Good chemical stability
3. Typical electrical insulator
Zirconia:
1. The hardness is higher, and its density White Zirconia Ceramic is 6.05g/cm3, which is higher than that of alumina ceramics
2. Good wear resistance. Its wear resistance is 266 times that of manganese steel, which can extend the service life of equipment by more than 10 times
3. High toughness, high toughness, non friability, high bending and compressive strength
What is the performance of various precision ceramic materials?
2022 11/23