Silicon nitride threaded sleeve
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材料及含量
产品特点
1. Dimensional accuracy: Up to 0.003mm.
2. Surface finish: Up to Ra0.03.
3. Applicable temperature: ≤1000℃ in air, ≤1400℃ in protective atmosphere.
4. Minimum thread size: Internal thread M2.
5. Typical specifications: φ75×20×15MM, φ185×20×15MM, etc.
产品详情
Product Introduction of Silicon nitride threaded sleeve:
Silicon nitride threaded sleeve are threaded fasteners made from silicon nitride (Si₃N₄) material. Their basic structural unit is the [Si₃N₄] tetrahedron, forming a three-dimensional network structure. This structure gives the material extremely high intrinsic strength and toughness.
Product Features and Advantages
1. Mechanical Properties:
High Strength: Bending strength can reach over 800 MPa, Vickers hardness 1700.
High Toughness: Effectively resists impact and fatigue.
Wear Resistance: Hardness is second only to diamond, and the wear rate is only 1/10 of traditional metal materials.
2. Thermal Properties:
High Temperature Resistance: Oxidation starting temperature is 1300~1400℃, and can reach 1400℃ in a protective atmosphere.
Low Thermal Expansion: Coefficient is only 2.8~3.2×10⁻⁶/℃.
Thermal Shock Resistance: Can withstand rapid temperature changes from 1000℃ to cold water.
3. Chemical Properties:
Corrosion Resistance: Except for hydrofluoric acid, it can withstand most inorganic acids and sodium hydroxide solutions below 30%.
Self-lubricating: Friction coefficient 0.02-0.1.
Application Fields
1. Aerospace: Engine components, structural connections, turbine blades.
2. Automotive industry: High-temperature components, wear-resistant parts, exhaust systems.
3. Electronics industry: Connection and fixation of electronic components.
4. Nuclear energy: Nuclear reactor support and protective components.
5. Chemical industry: Corrosion-resistant valves, pump bodies, and seals.
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