Silicon also known as Carborundum, with chemical rule SiC. It is a compound of atomic number 14 and carbon paper. Silicon pulverise has extensive use as an abrasive. It 39;s grains can be secure together by a sintering process to form very hard . It has a wide range of practical application in car brakes, car grasp and ceramic plates in incontestable vests. Electronic applications of Si carbide are as a light emitting junction rectifier. Today SiC is wide used in high-temperature high-voltage semiconductor device .
Another material that has a similar social system and practical application as that of silicon is Silicon nitride. Just like the Silicon Carbide, it is also available in two main types, warranted and sintered. Its are good physical phenomenon insulators and are tolerant to the assault by liquefied metals. Due to its properties of low thermal conduction and superior energy traumatize underground, Machining silicon nitride is easy and very inexpensive. The high effectiveness of sintered silicon nitride has ground many applications in the self-propelling and machine tool industries for bearing and wear parts.
Production Method:
Their simplest manufacturing process involves the use of silicon oxide sand along with carbon or N in an Acheson graphite electric automobile resistance furnace. The temperature should be retained high between 1600 and 2500 deg;C. Fine SiO2 particles can be born-again to SiC or Si3N4 by warming in the surplusage carbon paper or atomic number 7.
The material formed in the Acheson furnace varies in pureness, according to its outdistance from the graphite resistor. Colorless, pale yellow and putting green crystals have the highest pureness. Nitrogen and Al are common impurities, and they involve the physical phenomenon conduction.
Industrial Applications and Uses:
1. Abrasive and Cutting Tools: nbsp;Due to the enduringness and low cost, Si carbide is a pop abrasive material stuff. It is used for its callousness in abrasive material machining silicon , as attrition, honing, water-jet cutting and sandblasting.
2. Structural material: nbsp;Like other hard namely aluminium oxide and B carbide, both of these are used as composite armor, and also as bullet proofread vests.
3. Automobile parts: nbsp;Silicon-infiltrated carbon paper-nitrogen composite plant is used for high performance quot;ceramic quot; brake as they can hold out extreme point temperatures.
4. Carborundum printmaking: nbsp;Silicon is used in carborundum printmaking. It is a collagraph printmaking proficiency.
5. Thin filament Pyrometer: nbsp;It is a technique to measure gas temperatures in an natural philosophy technique. Silicon carbide elements are used in heat treatment of metals, swim glass over production, product of and igniters in pilot lights for gas heaters, etc.
6. Nuclear fuel facing: nbsp; silicon carbide plates composite plant stuff can be used as a replacement for Zircaloy facing in get down water reactors.
7. Steel product: nbsp;When melted in a basic atomic number 8 furnace these are used for qualification nerve acts as a fuel.