high temperature black Silicon Nitride Ceramic Block tile
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Silicon Nitride Ceramic:
The main component of Hexagonal Boron Nitride Ceramics is BN, and the crystal structure is hexagonal. The structure and performance of hexagonal boron nitride are similar to graphite, so it is called "white graphite". It has low hardness and can be cut and has self-lubricating properties. , Can be made into self-lubricating high temperature bearings, glass forming molds, etc. The main components of cemented carbide are carbides and binders. The carbides mainly include WC, TiC, TaC, NbC, VC, etc., and the binder is mainly cobalt (Co). Compared with tool steel, cemented carbide has high hardness (up to 87~91HRA) and good thermal hardness (excellent wear resistance around 1000℃). When used as a tool, the cutting speed is 4~7 times higher than that of high-speed steel, and the service life is increased by 5 ~8 times, its disadvantage is that the hardness is too high, it is brittle, and it is difficult to be machined. Therefore, it is often made into blades and used on the tool holder. Cemented carbide is mainly used for machining tools; Drawing dies, drawing dies, cold heading dies; mining tools, geology and petroleum development use various drill bits, etc. Diamond Natural diamond (diamond) is a precious decoration, while synthetic diamond is widely used in industry. Diamond is the hardest material in nature and has a very high elastic modulus; the thermal conductivity of diamond is the highest among known materials; The insulating properties of diamond are very good. Diamond can be used as drill bits, knives, abrasive tools, wire drawing dies, and dressing tools; diamond tools can be ultra-precisely processed to achieve mirror finish. However, diamond tools have poor thermal stability and high affinity with iron group elements, so they cannot be used to process iron and nickel-based alloys. They mainly process non-ferrous metals and non-metals. They are widely used in ceramics, glass, stone, concrete, gems, Processing of agate, etc.
properties:
High hardness, high strength, wear resistance, corrosion resistance, high temperature(1200°), good thermal diffusivity, good thermal shock resistance(avoid the temperature changing rapidly), good insulativity, low density. The comprehensive properties are best in most of structure ceramic.
Data Sheet↓
Color: Black Grey
Density: ＞3.2g/cm3
Hardness: HRA90
Vickers Hardness (Hv50): ＞1550 HV0.5
Modulus of Elasticity: 290Gpa
Flexural Strength: ＞600Mpa
Compressive Strength: 2500Mpa
Modulus of Elasticity(25°C): 65Gpa
Fracture toughness:＞6.0 Mpam1/2
Maximum Use Temperature: 1200°C
Thermal Conductivity:15-20 W(m.K)
Thermal Expansion Coefficient: ＞3.1 10-6/°C
Thermal Shock Resistance: 500 △T°C
Special Heat Capacity: 700 KJ/kg.K
Dielectric Strength: 1 KV/mm
Dielectric Constant: er
Volume Resistivity(20°C): 1.0*10(12)Ω.cm
Application industry:
Machinery, electronic, semiconductor, chemical, petroleum, smelt.
Specific application:
Welding shaft, electronic substrate, plunger, nozzle, slide guide, diesel parts, metal molding, shaft wheels etc.
Why Choose Us? 1.12 years of professional production industrial ceramics factory 2.High quality products with low price 3.High precision parts with lowest tolerance 4.Short time for production 5.Has a group of experienced, professional and efficient R&D team 6.Has a good reputation in China and abroad. 7.MOQ is not limited, small quantity is welcome.
8.Vigorous team and good after-sales service
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