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Silicon carbide is an industrial ceramic material with high hardness, high wear resistance, low friction coefficient, strong oxidation resistance, good thermal stability, and low thermal expansion coefficient. With excellent properties such as high thermal conductivity and chemical resistance, it can be used in various mechanical equipment requiring wear resistance, corrosion resistance and high temperature resistance. Silicon carbide has become an important engineering material, widely used in machinery, metallurgy, mining, chemical and other industries, such as mechanical seal seal rings, sliding bearings, nozzles, cutting tools, etc.
DX101
DX201
DX202
DX203
DX204
Reaction sintering SiC is the reaction of fine particles of SiC, carbon powder and additives in a proportion of uniformly mixed and infiltrated silicon. Excessive silicon is filled into the voids to obtain highly dense ceramic materials.
This material is a dense SiC ceramic product made by pressureless sintering of high-performance submicron SiC powder. It does not contain free silicon and has fine grains. It has high temperature resistance, high strength, high hardness, high corrosion resistance, and oxidation resistance. It is the general material of choice for mechanical seal rings, sandblasting nozzles, armor, magnetic pumps, and canned pump components in the international and domestic market. It is especially suitable for use in working conditions that transport corrosive media such as strong acids and alkalis.
Pressureless carbonized products are made by adding fine graphite particles on the basis of pressureless sintering SiC and sintered at high temperature. The material not only possesses the excellent performance of SSIC, but also improves the self-lubricity and dry friction resistance of the material due to the presence of graphite particles. Suitable for use under working conditions such as strong corrosion, high or inconsistent load, dry friction, hard-hard teaming, such as sliding bushings.
The material is a special pressureless sintered SiC that optimizes the friction performance of the sealing surface. It is formed by forming uniformly distributed and independent spherical micropores during the sintering process. When the friction pair contacts the fluid medium, the spherical micropores will serve as a storage cavity for the fluid medium so that the medium can fully apply a lubricating effect, thereby reducing the coefficient of friction and frictional heat on the end face. When the fluid medium is insufficient, the liquid storage of the micropores will improve the lubrication conditions and help promote maintain a fluid film at the sliding interface. This microporous lubrication mechanism makes the microporous SSIC better than the conventional reaction sintering and pressureless sintered silicon carbide under many working conditions. It is suitable for limited lubrication working conditions and the harsh application environment of the combination of hard and hard grinding surfaces.
The material contains both fine graphite particles and spherical micropores for storing fluid media. It combines all the excellent properties of pressureless sintered SiC, pressureless sintered SIC+C and pressureless sintered SIC with micropores, and will maximize the dry friction and thermal shock resistance of the material to meet the most demanding working conditions. It is especially suitable for the production of high-performance canned motor pumps and magnetic drive pump components.
| Density (g/cm) |
Rockwell hardness(HRA) |
Modulus of Elasticity(GPa) |
Flexural strength(MPa) |
Compressive strength(MPa) |
Thermal conductivity(W/(m.K)) |
Coefficient of thermal expansion(1*10*/C) |
|
|---|---|---|---|---|---|---|---|
| DX101(RBSiC) | ≥3.03 | 92.0 | 383 | 374 | 2097 | 161 | 4.3 |
| DX201(SSiC) | ≥3.10 | 94.0 | 457 | 449 | 2259 | 146 | 4.0 |
| DX202(SSiC+G) | 2.90-2.95 | - | 323 | 231 | 886 | 142 | 3.9 |
| DX203 (Microporous SSIC) | 3.0-3.05 | 91.6 | 388 | 287 | 878 | 144 | - |
| DX204 (Microporous SSiC+G) | 2.08-2.84 | - | 336 | 232 | - | 135 | - |
| Silicon carbide content(%) |
Free Si content(%) |
|
|---|---|---|
| DX101(RBSiC) | ≥90 | <10 |
| DX201(SSiC) | ≥98 | - |
| DX202(SSiC+G) | ≥90 | - |
| DX203 (Microporous SSiC) | ≥98 | - |
| DX204 (Microporous SSiC+G) | ≥90 | - |
Pressureless sintered silicon carbide integral multi-curved armor ballistic plating, due to its light weight, high hardness, excellent ballistic impact resistance and overall protection performance, is widely used in personnel protection.
The product is made of graphite impregnated with different resins or metal materials. It has good corrosion resistance, self-lubrication, high thermal conductivity and low expansion coefficient. Advantages such as low friction coefficient. It can be used for mechanical seals, sliding bearings, and radial split seals.
| Category | Model | Density(g/cm)≥ | Flexural Strength(MPa)≥ | Compressive Strength(MPa)≥ | Shore Hardness(HS)≥ | Porosity(%)≤ |
|---|---|---|---|---|---|---|
| Epoxy Resin | M106H | 1.75 | 65 | 200 | 85 | 2.0 |
| M120H | 1.70 | 60 | 180 | 80 | 2.0 | |
| M205H | 1.70 | 60 | 200 | 70 | 2.0 | |
| M252H | 1.72 | 45 | 120 | 45 | 2.0 | |
| Furan resin impregnated (K) | M106K | 1.75 | 67 | 200 | 90 | 3.0 |
| M120K | 1.70 | 62 | 180 | 85 | 3.0 | |
| M205K | 1.70 | 62 | 200 | 75 | 3.0 | |
| M252K | 1.72 | 47 | 120 | 48 | 3.0 | |
| Phenolic resin (F) | M106F | 1.75 | 60 | 200 | 85 | 2.5 |
| M120F | 1.70 | 55 | 180 | 80 | 2.5 | |
| M205F | 1.70 | 55 | 200 | 70 | 2.5 | |
| M252F | 1.72 | 40 | 120 | 45 | 2.5 | |
| Antimony Dipping | M106D | 2.2 | 65 | 220 | 70 | 3.0 |
| Impregnating resin | KC-673 | 1.87 | 78 | 245 | 87 | - |
| Impregnated antimony | Kc6709 | 2.3 | 90 | 300 | 88 | - |
| Impregnating resin | Ek2200 | 1.82 | 75 | 200 | 110(HR) | 2.5 |
| Impregnated antimony | Ek3205 | 2.25 | 95 | 260 | 115 | 2.5 |