Black silicon carbide is quartz sand, petroleum coke and quality silica as the main raw material in electric arc furnace smelting. Its hardness between corundum and diamond, the mechanical strength is higher than corundum, brittle and sharp. Black silicon carbide SiC containing approximately 98.5% higher than its toughness green silicon carbide, mostly for processing low tensile strength of the material, such as glass, ceramics, stone, refractory materials, cast iron and non-ferrous metals.
2013年11月15日星期五
Silicon!!!!!
silicon
Crystalline black silicon carbideis dark blue, very crisp, is a typical semiconductor.Chemical properties are very stable.At room temperature, to eliminate hf,Outside, it is difficult to react with other substances.
The purpose of the silicon:(1) of high purity silicon is important semiconductor materials.In the first IIIA monocrystalline silicon containing trace elements, the formation of p-type silicon semiconductor;With traces of the first VA group elements, formation of n-type and p-type semiconductors together, can make the solar cell, transform radiant energy
Into electrical energy.In the development of energy is a kind of promising material.
(2) metal ceramic, important material of space travel.Mix of ceramic and metal sintering, made from metal ceramic composite materials, it is high temperature resistant
, rich toughness, can cut, both inherited the respective advantages of metal and ceramic, and compensate for birth defects of the two.Can be applied to
Military weapons made the first space shuttle "Columbia" through dense atmosphere can resist high speed friction produced by high temperature, full
To rely on it that thirty-one thousand pieces of silicon watts spells build by laying bricks or stones into the shell.
(3) optical fiber communication, the latest modern methods of communication.With pure silica control the transparency of glass fibers, laser on the glass
Fibre channel, total reflection forward transmission, the countless times to replace the heavy cable.Optical fiber communication capacity is high, that a human hair
Thin glass fiber, 256 phone, can transmit at the same time it also without electricity, magnetic interference, not afraid of hacking, has a high degree of confidentiality
.Optical fiber communication will make the 21st century, the human life has a revolutionary change.
(4) performance of organic Black silicon carbidecompounds.For example, organic silicon plastic is an excellent waterproof coating material.The walls in the underground railroad spraying organic
Silicon, can solve the water seepage problems.In the ancient cultural relics, sculpture, appearance, apply a thin layer of silicone plastic, can prevent
Moss breeding, resist the wind rain and weathering.The monument to the people's heroes in tiananmen square, is through organic silicon plastic processing
Surface, so white, pure and fresh forever.
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