Silicon Carbide Spigot | SIC Ceramic Spigot
Silicon Carbide Spigot Not Only Have Excellent Mechanical Properties At Room Temperature, Such As High Bending Strength, Excellent Oxidation Resistance, Good Corrosion Resistance, High Wear Resistance And Low Friction Coefficient, But Also High Temperature Mechanical Properties (Strength, Creep Resistance, Etc.) Are The Best Known Ceramic Spigot. The Material Of Hot Pressing Sintering, No Pressure Sintering, Hot Isostatic Pressing Sintering, Its High Temperature Strength Can Be Maintained Until 1600℃, Which Is The Best Material For High Temperature Strength In Ceramic Spigot. Oxidation Resistance Is Also The Best Of All Non-Oxide Ceramics. Alias Diamond.
Crystal Structure
There Are Two Main Crystal Structures In The SIC Spigot, Namely, The β-SIC Of The Cubic System And The SIC. Of The Hexagonal System The BaSIC Structural Units Of Silicon Carbide Crystals Are Interspersed SIC and CSI tetrahedra. The Tetrahedral Co-Edge Forms a Plane Layer And Is Connected With The Next Stacked Tetrahedron With Vertices To Form a Three-Dimensional Structure. Hundreds Of Variants Have Been Found Due To The Different Order Of Tetrahedral Stacking Can Form Different Structures. The Letters C( Cubic), H( Hexagonal), R( Rhombohedral) m Are Generally Used To Denote Their Lattice Types, And The Number Of Layers Contained In The Unit Cell Is Used To Show The Difference. For Example, NH Represents The Hexagonal Crystal Structure With n Repeated Cycles Along The c Axis, While The Rhombohedral Structure With m Repeated Cycles Along The Axis.
Characteristics
Silicon Carbide Ceramic Spigot Is a Compound With Strong Covalent Bond, And Its Ionic Type Of Si--c Bond Is Only About 12%. Therefore, It Also Has Excellent Mechanical Properties, Excellent Oxidation Resistance, High Wear Resistance And Low Friction Coefficient.The Biggest Characteristic Of SIC Spigot Is The High Temperature Strength, The Strength Of Ordinary Ceramic Materials Will Be Significantly Reduced At 1200~1400 Degrees Celsius, While The Flexural Strength Of Carbon SIC Spigot At 1400 Degrees Celsius Is Still Kept At a High Level Of 500~600 Mpa, So Its Working Temperature Can Reach 1600 And 1700 Degrees Celsius. Coupled With The High Thermal Conductivity Of Silicon Carbide Ceramics, Which Is Second Only To Beryllium Oxide Ceramics In Ceramics, Silicon Carbide Has Been Widely Used In The Fields Of High Temperature Bearings, Bulletproof Plates, Nozzles, High Temperature Corrosion Resistant Parts And Electronic Equipment Parts In High Temperature And High Frequency Range.
Rare Earth Oxides Such As y2o, Can Also Be Used As Sintering Aids For Silicon Carbide Ceramics To Obtain Dense Silicon Carbide Through Liquid Phase Sintering. Because Its Liquid Phase Sintering Is Through The Formation Of Glass Phase To Reduce The Porosity And Increase The Density, The Characteristics Of Glass Phase Have a Great Influence On The Micro structure Obtained By Sintering.
Performance
With Excellent Mechanical Properties, Excellent Oxidation Resistance, High Wear Resistance And Low Friction Coefficient. The Disadvantage Of SIC Ceramics Is That The Fracture Toughness Is Low, That Is, The Brittleness Is Large. For This Reason, Complex Ceramics Based On SIC Ceramics, Such As Fiber (Or Whisker) Reinforcement, Heterogeneous Particle Dispersion Strengthening, And Gradient Functional Materials Have Emerged One After Another, Which Improves The Toughness And Strength Of Monomer Materials.
Applications
Because Of Its Super hardness, SIC Spigot Can Be Used As Grinding Wheel, Abrasive Cloth, Sandpaper And Abrasive Materials, So It Is Widely Used In Machining Industry. During World War Ii, It Was Also Found To Be a Reducing Agent And Heating Element In Steel Making, Thus Promoting The Rapid Development Of SIC. SIC Ceramics Have Been Widely Used In Petroleum, Chemical Industry, Microelectronics, Automobile, Aerospace, Aviation, Paper making, Laser, Mining And Atomic Energy Industries. Silicon Carbide Has Been Widely Used In High Temperature Bearings, Bulletproof Plates, Nozzles, High Temperature Corrosion Resistant Parts And Electronic Equipment Parts In High Temperature And High Frequency Range.
