customized refractory gold spray Si3N4 ceramic jet nozzle
Reputation depends on quality, quality comes from Hard!
Silicon Nitride Ceramic:
In the field of ceramics and metal welding, Alumina Ceramics is one of the more mature structural materials for ceramic metallization. However, in the field of higher pressure resistance, bending resistance, mechanical shock resistance and corrosion resistance, the application requirements of Silicon Nitride Ceramics and Zirconia Ceramics are more and more extensive. For example, the connection of silicon nitride ceramic turbine blades and metal shafts, the welding of ceramic nozzles and pedestals, the welding of Zirconia Ceramic pressure and corrosion resistant sensor shells and metal casings, and the welding of ceramics and metals in medical devices. The ceramic metallization mechanism of silicon nitride ceramics and Insulating Ceramic Substrate Sheet Electronic Plate zirconia ceramics and alumina ceramics is different. Conventional active metal direct brazing and molybdenum manganese metallization tend to change the structural properties of the ceramic itself or make poor joint interface. Boron carbide is one of the hard man-made materials. It has the characteristics of light weight, semiconductor physical properties, absorption of neutrons, high grinding efficiency, no reaction with strong acid and strong alkali, Mohs hardness of 9,36, microhardness of 5400~ 6300 kg per square meter, density is 2.52 kg per square meter, melting point is 2450 degrees Celsius, boron carbide is hexagonal dark black, due to the above characteristics and properties, boron carbide is widely used in machinery, metallurgy, chemical, aerospace military and other fields. Abrasives can be used to process gemstones, ceramics, knives, bearings, and refractory materials for use in various fields of metallurgy. Densified boron carbide can be used as nozzles, mechanical seals, and ballistic resistant materials due to the greater heat of boron carbide. The neutron capture cross section, which absorbs a large amount of neutrons, can be used in high-tech fields such as nuclear reactors. As a new type of material, engineering ceramics is widely used in chemical, mechanical, electronic, information, aerospace due to its high melting point, high hardness, high modulus of elasticity, strong wear resistance and good self-lubricating properties. , automotive and other industries.
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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FAQ
Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-30 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.
