Silicon Carbide Used As Modifying Agent And Deoxidant Silicon Carbide 1.Chemical composition:SiC, Fe2O3 2.For Abrasives,Refractory,Grinding tools 3.Appearance:black and Green Introduction: Silicon carbide (SiC), also known as carborundum, is a compound of silicon and carbon with chemical formula SiC. It occurs in nature as the extremely rare mineral moissanite. Silicon carbide powder has been mass-produced since 1893 for use as an abrasive. Grains of silicon carbide can be bonded together by sintering to form very hard ceramics which are widely used in applications requiring high endurance, such as car brakes, car clutches and ceramic plates in bulletproof vests. Electronic applications of silicon carbide as light emitting diodes and detectors in early radios were first demonstrated around 1907, and nowadays SiC is widely used in high-temperature/high-voltage semiconductor electronics. Large single crystals of silicon carbide can be grown by the Lely method; they can be cut into gems known as "synthetic moissanite". Silicon carbide with high surface area can be produced from SiO2 contained in plant material. Chemical Analysis:
Purpose | Specification | Chemical Composition(%) | Magnetic material content(%)max |
Abrasives grade | SICmin | F.Cmax | Fe2O3max |
grain | 12-80 | 98 | 0.20 | 0.6 | 0.0023 |
90-150 | 97 | 0.30 | 0.8 | 0.0021 |
180-220 | 97 | 0.30 | 1.2 | 0.0018 |
micropowder | 240-4000 | 96 | 0.35 | 1.35 | — |
Refractory grade | Group Size | 0-1mm 1-3mm 3-5mm 5-8mm | 97 | 0.35 | 1.35 | — |
Fine Powder | -180mesh -200mesh -240mesh -320mesh | 97 | 0.35 | 1.35 | — |
color | Black |
Hardness(mohs) | 9.15 |
Melting point(°C) | 2250 |
Maximum service temperature(°C) | 1900 |
Ture density(g/cm3) | 3.9 |
Applications: (1) Silicon carbide can be use as metallurgical deoxidizer and high temperature resistant materials in smelting. (2) It can also be use as abrasive, which can be used to make abrasive tools, such as grinding wheels, oilstones, grinding head and so on. Advantages: (1) Large melting furnace, longer melting time, lead to more crystallization, bigger crystals, higher purity and less impurities. (2) Good hardness, longer life. (3) Chemical washed and water washed, good cleanness. (4) Special treated products get higher purity, better toughness, and better grinding effect.
