Si3N4 Silicon Nitride Ceramics Porous Screw Vickers Hardness 1700
Price:
$1.00/Pieces >=1 Pieces
MOQ:
50 Pieces
Delivery Time:
Negotiable
Brand:
BPT
Product Description
Material Introduction
Silicon nitride ceramics is an inorganic material that does not shrink during sintering and is an important structural material. Silicon nitride has high strength and is one of the hardest substances in the world. It has lubricity, and has properties such as wear resistance, high strength, low density, and high temperature resistance. Silicon nitride has a low thermal expansion coefficient and high thermal conductivity, so it has excellent thermal shock resistance. Silicon nitride will not crack when heated to 1000°C and put into cold water. It is extremely resistant to high temperatures, and its strength can be maintained to a high temperature of 1200°C without falling. It will not melt into a melt after being heated, and will not decompose until 1900°C. It also has amazing chemical corrosion resistance. Except for hydrofluoric acid, it does not react with other inorganic acids or caustic soda solutions below 30%, and it is also resistant to corrosion by many organic acids. At the same time, it is a high-performance electrical insulating material. It is precisely because of the excellent characteristics of silicon nitride ceramics that it is more appropriate to replace alloy steel with silicon nitride ceramics in those places where high strength, low density, and high temperature resistance are required. People often use it. To manufacture bearings, turbine blades, mechanical seal rings, permanent molds and other mechanical components.
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Silicon nitride ceramic characteristics
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Property
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Item
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Data
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Unit
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Mechanical Characteristics
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color
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black/grey
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density
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3.2
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g/cm3
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Bending Strength
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750
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MPa
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Compressive Strength
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3800
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MPa
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Elastic Modulus
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290
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GPa
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Fracture Toughness
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7
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MPa m1/2
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Weber Coefficient
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15
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m
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Vickers Hardness
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1,700
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HV 0.5
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Thermal Characterics
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Coefficient of Line Thermal Expansion
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2
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10-6 K-1
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Thermal Conductivity
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20
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W/mK
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Thermal Shock Resistance (Put in Water)
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750
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ΔT °C
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Max Working Temperature(in air)
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1,300
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°C
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Electrical Characteristics
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Volume Resistance at 20°C
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>1014
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Ωcm
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Dielectric Strength
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10×106
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V/m
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Chemical Characteristics
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Nitric Acid (60%) 90°C
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1
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WT Loss mg/cm2/day
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Sulphuric Acid (95%) 95°C
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≒0.00
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Caustic Soda (30%) 80°C
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0.2
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The values are typical material properties and may vary according to products configuration and manufacturing process. For more details, Please feel free to contact us.
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What Can We Do
We can provide a variety of high-performance engineering ceramics.
Silicon Nitride Ceramics (Si3N4)
Silicon nitride exceeds other ceramics in thermal shock resistance. Its strength does not deteriorate at elevated temperatures, hence it is most appropriate for engine and gas turbine parts, including turbo charger rotors, diesel engine glow plugs and hot plugs.
Alumina Ceramics (Al2O3)
Alumina is the most widely used type of ceramic. Its high dielectric properties are beneficial in electrical products, Alumina offers corrosion and wear resistance and high strength. It is widely used for industrial machine parts.
Silicon Carbide Ceramic (SiC)
Silicon carbide retains its strength at elevated temperatures as high as 1400℃. It has the highest corrosion resistance of all fine ceramic materials. Applications include mechanical seals and pump parts.
Zirconia Ceramics (ZrO2)
Zirconia ceramic has the highest strength and toughness at room temperature of all engineering ceramics. Before zirconia, ceramics were considered impractical for scissor or knife applications. With its excellent surface smoothness, zirconia is also used for pump parts.
Aluminum Nitride Ceramics(AIN)
Aluminum nitride ceramics are usually gray or off-white. It has a low thermal expansion coefficient, excellent insulation performance, heat resistance, and a thermal conductivity of more than 180W/(m.k). It is an ideal package heat dissipation material for large integrated circuits.
Machinable Glass Ceramic
Machinable glass ceramics are fluorophlogopite mica glass ceramics with synthetic mica as the main crystal phase. The main components are fluorophlogopite and glass with silica as the main component. Contains 55% fluorophlogopite and 45% borosilicate glass matrix.
Microporous Ceramic Plate
Microporous ceramics refer to ceramic bodies containing a large number of open or closed tiny pores. The material is mainly alumina or carbonized. The surface is firm, the pores are uniform, the porosity is 35-40%, and the pore size ranges from 1 to 100 microns.
Boron Nitride(h-BN)
Boron nitride material has the characteristics of resistance to high temperature and heat cycle. It will not react with many metals, ceramic rare earths and other materials, nor will it contaminate the product. Will not break in hot and cold environments.
Other Ceramics
Our company can process a variety of ceramic materials and cemented carbide. We are currently processing experimental splines for many research institutes and schools. You can provide materials and we can process them according to drawings.
We can customize engineering ceramic parts according to your drawings or samples and performance requirements.
Ceramic shaft and sleeve
Plane processing
Ceramic micro hole machining
Ceramic processing thread
Ceramic complex shaped parts
Ceramic parts polishing
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Process range
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Inside Diameter
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≥0.2mm
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Length
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≤750mm
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Internal thread
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≥2mm
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Outside Diameter
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≤400mm
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Thickness
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≤400mm
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External thread
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≤400mm
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Machining accuracy
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0.001
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Straightness
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Roughness
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roundness
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0.002mm
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Parallelism
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0.003mm
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Verticality
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0.005mm
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concentricity
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0.002mm
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Flatnes
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0.002mm
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Straightness
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0.005mm
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clearance fit
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0.003mm
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tolerance of dimension
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0.001mm
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surface roughness
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Ra0.1
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Packaging & shipping
The sturdy shock-resistant and drop-proof packaging ensures the safety of the product during transportation.
Cooperate with world-class logistics companies to ensure the timeliness of transportation.
FAQ
Q: Are you a factory or a trading company
A: We are a professional manufacturer of ceramic parts. we are factory.
Q:Do you only supply standard parts or can customized parts according to our drawing?
A: All parts can be customized according to you drawings and will meeting your requirements perfectly.
Q:Can the price be negotiated
A: Of course, we will consider discounts for large-volume orders.
Q:Can you guarantee the product?
A: Yes, we promise to provide quality assurance for all products, inspect according to your drawings and issue an inspection report. If you are not satisfied with our product quality or service, please feel free to give us feedback.
Q:Can I visit your factory?
A: Of course, welcome your arrival, please contact us in advance and make an appointment.
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, 30% T/T in advance ,balance before shippment.If you have another question,pls feel free to contact us as below.
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Company
Jiangsu BPT Precision Ceramics Co., LTD
Location
Yixing Industrial Park, Jiangsu Province
Contact Person
Wu