汽車 金屬配件金屬硅

【概述】

結(jié)晶型的硅是暗黑藍(lán)色的，很脆，是典型的半導(dǎo)體?；瘜W(xué)性質(zhì)非常穩(wěn)定。在常溫下，除氟化氫以外，很難與其他物質(zhì)發(fā)生反應(yīng)。

中國(guó)的金屬硅產(chǎn)能比較大，產(chǎn)量主要集中在貴州、云南、福建、廣西、四川、湖南。其中冶金級(jí)金屬硅553、441有著較廣的分布區(qū)域，主要分布在貴州、湖南、四川、云南、廣西、內(nèi)蒙、新疆等地，其中貴州是Zui主要的金屬硅生產(chǎn)省份，產(chǎn)量占全國(guó)產(chǎn)量的15%-35%。

從2008年1月1日起，中國(guó)金屬硅暫定關(guān)稅為10%。此次關(guān)稅上調(diào)的目的是控制金屬硅的出口，但盡管關(guān)稅上調(diào)，中國(guó)產(chǎn)金屬硅價(jià)格在國(guó)際市場(chǎng)上仍然是Zui低的，價(jià)格優(yōu)勢(shì)明顯。

【生產(chǎn)工藝】

  工業(yè)上，通常是在電爐中由碳還原二氧化硅而制得。

　　化學(xué)反應(yīng)方程式：

sio2 + 2c → si + 2co

這樣制得的硅純度為97~98%，叫做金屬硅。再將它融化后重結(jié)晶，用酸除去雜質(zhì)，得到純度為99.7~99.8%的金屬硅。如要將它做成半導(dǎo)體用硅，還要將其轉(zhuǎn)化成易于提純的液體或氣體形式，再經(jīng)蒸餾、分解過(guò)程得到多晶硅。如需得到高純度的硅，則需要進(jìn)行進(jìn)一步的提純處理。

【性   質(zhì)】

含量92—98%

物理屬性：

【用   途】

硅是一種半導(dǎo)體材料，可用于制作半導(dǎo)體器件和集成電路。還可以合金的形式使用(如硅鐵合金)，用于汽車和機(jī)械配件。也與陶瓷材料一起用于金屬陶瓷中。還可用于制造玻璃、混凝土、磚、耐火材料、硅氧烷、硅烷。

①高純的單晶硅是重要的半導(dǎo)體材料。在開發(fā)能源方面是一種很有前途的材料。

②金屬陶瓷、宇宙航行的重要材料。將陶瓷和金屬混合燒結(jié)，制成金屬陶瓷復(fù)合材料，它耐高溫，富韌性，可以切割，既繼承了金屬和陶瓷的各自的優(yōu)點(diǎn)，又彌補(bǔ)了兩者的先天缺陷。可應(yīng)用于軍事武器的制造。

③光導(dǎo)纖維通信，Zui新的現(xiàn)代通信手段。用純二氧化硅拉制出高透明度的玻璃纖維，激光在玻璃纖維的通路里，無(wú)數(shù)次的全反射向前傳輸，代替了笨重的電纜。光纖通信容量高，一根頭發(fā)絲那么細(xì)的玻璃纖維，可以同時(shí)傳輸256路電話，它還不受電、磁干擾，具有高度的保密性。光纖通信將會(huì)使21世紀(jì)人類的生活發(fā)生革命性巨變。

④性能優(yōu)異的硅有機(jī)化合物。例如有機(jī)硅塑料是極好的防水涂布材料。在地下鐵道四壁噴涂有機(jī)硅，可以一勞永逸地解決滲水問(wèn)題。在古文物、雕塑的外表，涂一層薄薄的有機(jī)硅塑料，可以防止青苔滋生，抵擋風(fēng)吹雨淋和風(fēng)化。天安門廣場(chǎng)上的人民英雄紀(jì)念碑，便是經(jīng)過(guò)有機(jī)硅塑料處理表面的，因此永遠(yuǎn)潔白、清新。

 【overview】
crystalline silicon is dark blue, verycrisp, is a typical semiconductor.very stable chemical properties.at roomtemperature, in addition to other hydrogen fluoride is difficult toreact with other substances.
china's relatively largesilicon metal production, production mainly in guizhou, yunnan,fujian, guangxi, sichuan, hunan.metallurgicalgrade silicon metal which has a wider distribution area 553,441,mainly distributed in guizhou, hunan, sichuan, yunnan, guangxi,inner mongolia and xinjiang, guizhou, which is the most importantprovinces of silicon metal production, production accounting forproduction15% -35%.
from january 1, 2008, the chinesesilicon metal provisional tariff of 10%.thetariff increases are aimed at controlling the export of siliconmetal, but despite the tariff increases, the domestic silicon metalprices in the international market is still the lowest, the priceadvantage is obvious.
【process】
  industry,usually in the furnace in the reduction of carbon dioxide andprepared.
chemical reaction e:
sio2 + 2c → si +2co
this siliconobtained a purity of 97 ~ 98%, called siliconmetal.then it meltsrecrystallization, with acid to remove impurities, the purity of99.7 to 99.8% of metal silicon.if you want tomake it into the semiconductor silicon, but also to convert it intoeasy-purified form of liquid or gas, and then by distillation,decomposition by polysilicon.for high purity silicon, the need forfurther purification treatment.
【】 nature
content of 92-98%
physical properties:
melting point
 1687 k (1414 ° c)
 melting heat
 50.55 kj / mol
 
boiling point
 3173 k (2900 ° c)
 vapor pressure
 4.77 pa (1683k)
 
molar volume
 12.06 × 10-6m3/mol
 specific heat
 700 j / (kg · k)
 
heat of vaporization
 384.22 kj / mol
 thermal conductivity
 148 w / (m · k)
 
 
【usage】
silicon is asemiconductor material that can be used to make semiconductordevices and integrated circuits.you can also use the form alloys(such as silicon alloy) for the automotive and machineryparts.also, together with theceramic materials for metal ceramics.canalso be used in the manufacture of glass, concrete, bricks,refractory material, siloxane, silane.
① high purity of silicon is an importantsemiconductor material.in the development of energy sources isa promising material.
② metal ceramics, astronautical importantmaterial.sinteredceramic and metal mixture, made of metal-ceramic compositematerial, which heat, toughness, can cut both metal and ceramicinherited the merits, but also to make up for the two birthdefects.can be used in the manufacture of militaryweapons.
③ optical fiber communications, the latest ofmodern means of communication.drawn with apure silica glass fiber with high transparency, the glass fiberlaser channel, the countless times the total reflection of forwardtransmission, instead of bulky cable.highcapacity optical fiber communication, a human hair so thin glassfibers, can also transmit 256 tel, also without electricity,magnetic interference, with a high degree ofconfidentiality.optical fiber communication will makethe 21st century revolutionize human life.
④-performance siliconorganic compounds.for example, silicone is an excellentwaterproof plastic coating material.inthe subway walls silicone spray, water seepage problems can beresolved once and for all.in ancient artifacts,sculptures appearance, a thin layer of silicone coated plastic, canprevent breeding moss, resist wind and rain andweathering.monument to the people'sheroes in tiananmen square, is through the surface of siliconeplastic handle, so always white,fresh.

本產(chǎn)品的品名是金屬硅，牌號(hào)是441，產(chǎn)地是河南.01，硅含量≥是98（%），雜質(zhì)含量是0.1（%），重量是0.5-2（kg/塊）