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High Strength Temperature Resistant bearings Silicon Nitride ceramic Balls With Fracture Toughness

Name: High Strength Temperature Resistant bearings Silicon Nitride ceramic Balls With Fracture Toughness
Brand: Cersol
Price: 1 USD

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Brand Name :	Cersol
Certification :	MSDS, TDS
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Delivery Time :	USUALLY 1 MONTH
Payment Terms :	T/T IN ADVANCE
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High Strength Temperature Resistant bearings Silicon Nitride ceramic Balls With Fracture Toughness

Product characteritics

Silicon Nitride material is one of the hardest materials in the world with extrusion molding process and hot isostatic pressing sintering adopted during the production. Its high strength, wear resistance, temperature resistance, corrosion resistance, acid resistance and alkali resistance can well ensure the purity of materials.

Application

It is a precision ceramic sintered at high temperature in a non-oxidizing atmosphere. It has five properties, high strength, high wear resistance, high temperature resistance, corrosion resistance, acid and alkali resistance. So it can be used in seawater for a long time. It also has self-lubricating properties, and it can be used in environments with high pollution of non-lubricating media.

Advantages of Silicon Nitride Bearing balls:

Properties	Ordinary Steel Ball	Silicon Nitride Balls	Evaluations
Density(kg/cm3)	7800	≥3220	The lower the density, the less energy loss
Young's Modulus (GPa)	210	≥300	The higher the modulus number, the smaller the deformation
Vickers-hardness(GPa)	8	14-18	The higher the hardness, the better the rigidity
Toughness (MPa·m)	16-25	6-8	The higher the toughness, the better the impact resistance
Thermal Expansion Rate(10-6/K)	12	≤3	The lower the thermal expansion rate, the smaller the deformation
Specific Heat Capacity(J/kg·K)	450	650	The larger the specific heat, the smaller the temperature change
Use Upper Limit Temperature(℃)	230	1000	The higher the online temperature, the wider the application field
Minimum Surface Roughness(μm)	0.02	0.004-0.005	The smaller the surface roughness, the smoother
Compressive Strength (MPa)	7.5	≥3000	The higher the compressive strength, the longer the life
Resistivity (Ω·cm)	0.001	10^14	The higher the resistivity, the better the insulation

Technical Parameters

	ltem	Parameter
Physical properties	Density (g/cm³)	≥3.2
	Elastic Modulus(GPa)	300-320
	Hardness (HV )	≥12
	Flexural strength(MPa)	700
	fracture toughness (MPa.m³)	6
	thermal expansivity (×106/k)	3.2
	Upper temperature limit of use(℃)	1200
	Thermal Shock Resistance (AT℃)	600-700
	insulativity	insulation
	Acid and alkali corrosion resistance	high
Properties of grinding media	Particle distribution(mm)	0.6+0.1mm
	Filling dense(g/cm³)	≥1.8
	Average Crushing Load(Kgf)	≥20
	Sphericity(DS/DL)	98%
	surface self- abrasion(PPm/h)	1.5
	internal self- abrasion(PPm/h)	1.7
	Internal porosity(%)	0.02
	Error rate of particle size(%)	0.1

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