【开元】绿碳化硅微粉 抛光研磨碳化硅 （有图）

【开元】绿碳化硅微粉 抛光研磨碳化硅 （有图）

碳化硅概术：

碳化硅（SiC）是用石英砂、石油焦（或煤焦）、木屑为原料通过电阻炉高温冶炼而成。碳化硅在大自然也存在罕见的矿物，莫桑石。碳化硅又称碳硅石。在当代C、N、B等非氧化物高技术耐火原料中，碳化硅为应用****广泛、****的一种。可以称为金钢砂或耐火砂。碳化硅是用石英砂、石油焦（或煤焦）、木屑（生产绿色碳化硅时需要加*）等原料在电阻炉内经高温冶炼而成。目前我国工业生产的碳化硅分为黑色碳化硅和绿色碳化硅两种，均为六方晶体，比重为3.20～3.25，显微硬度为2840～3320kg/mm2。

碳化硅有黑碳化硅和绿碳化硅两个常用的基该品种，都属α-SiC。①黑碳化硅含SiC约95%，其韧性高于绿碳化硅，大多用于加工*张强度低的材料，如玻璃、陶瓷、石材、耐火材料、铸铁和有色金属等。②绿碳化硅含SiC约97%以上，自锐性好，大多用于加工硬质合金、钛合金和光学玻璃，也用于珩磨汽缸套和精磨高速****具。此外还有立方碳化硅，它是以特殊工艺制取的黄绿色晶体，用以制作的磨具适于轴承的超精加工，可使表面粗糙度从Ra32～0.16微米一次加工到Ra0.04～0.02微米。　　

碳化硅由于化学性能稳定、导热系数高、热膨胀系数小、*性能好，除作磨料用外，还有很多其他用途，例如：以特殊工艺把碳化硅粉末涂布于水轮机叶轮或汽缸体的内壁，可****其*性而延长使用寿命1～2倍；用以制成的*耐火材料，耐热震、体积小、重量轻而强度高，节能效果好。低品级碳化硅（含SiC约85%）是****好的脱氧剂，用它可加快炼钢速度，并便于控制化学成分，****钢的质量。此外，碳化硅还大量用于制作电热元件硅碳棒。　

碳化硅的硬度很大，具有优良的导热性能，是一种半导体，高温时能****。

碳化硅用途：　

碳化硅主要有四大应用领域，即：功能陶瓷、*耐火材料、磨料及冶金原料。目前碳化硅粗料已能大量供应，不能算高新技术产品，而技术含量****高的纳米级碳化硅粉体的应用短时间不可能形成规模经济。　　

⑴作为磨料，可用来做磨具，如砂轮、油石、磨头、砂瓦类等。　　

⑵作为冶金脱氧剂和耐高温材料。　　

⑶高纯度的单晶，可用于制造半导体、制造碳化硅纤维。　　　

主要用途：用于3—12英寸单晶硅、多晶硅、*钾、石英晶体等线切割。太阳能光伏产业、半导体产业、压电晶体产业工程性加工材料。

用于半导体、避雷针、电路元件、高温应用、紫外光侦检器、结构材料、天文、碟刹、离合器、柴油微粒滤清器、细丝高温计、陶瓷薄膜、裁切工具、加热元件、*、珠宝、钢、护具、触媒担体等领域。

磨料磨具

　　主要用于制作砂轮、砂纸、砂带、油石、磨块、磨头、研磨膏及光伏产品中单晶硅、多晶硅和电子行业的压电晶体等方面的研磨、抛光等。

化工

　　可用做炼钢的脱氧剂和铸铁*的改良剂，可用做制造****的原料，是硅树脂工业的主要原料。碳化硅脱氧剂是一种新型的强复合脱氧剂，取代了传统的硅粉碳粉进行脱氧，和原工艺相比各项理化性能更加稳定，脱氧效果好，使脱氧时间缩短，节约能源，****炼钢效率，****钢的质量，降低原辅材料消耗，减少环境污染，****劳动条件，****电炉的综合经济效益都具有重要价值。

*、耐火和耐腐蚀材料

　　利用碳化硅具有耐腐蚀、耐高温、强度大、导热性能良好、*冲击等特性，碳化硅一方面可用于各种冶炼炉衬、高温炉窑构件、碳化硅板、衬板、支撑件、匣钵、碳化硅坩埚等。　　　另一方面可用于有色金属冶炼工业的高温间接加热材料，如竖罐蒸馏炉、精馏炉塔盘、铝电解槽、铜熔化炉内衬、*炉用弧型板、热电偶保护管等；用于制作*、耐蚀、耐高温等*碳化硅陶瓷材料；还可以制做火箭喷管、燃气轮机叶片等。此外，碳化硅也是高速公路、航空飞机跑道太阳能热水器等的理想材料之一。

有色金属

　　利用碳化硅具有耐高温，强度大，导热性能良好，*冲击，作高温间接加热材料，如坚罐蒸馏炉，精馏炉塔盘，铝电解槽，铜熔化炉内衬，*炉用弧型板，热电偶保护管等.

钢铁

　　利用碳化硅的耐腐蚀，*热冲击*损，导热好的特点，用于大型高炉内衬****了使用寿命.

冶金选矿

　　碳化硅硬度仅次于金刚石，具有较强的*性能，是*管道，叶轮.泵室.旋流器，矿斗内衬的理想材料，其*性能是铸铁.橡胶使用寿命的5--20倍&def也是航空飞行跑道的理想材料之一.

建材陶瓷砂轮工业

　　利用其导热系数.热辐射，高热强度大的特性，制造薄板窑具，不仅能减少窑具容量，还****了窑炉的装容量和产品质量，缩短了生产周期，是陶瓷釉面烘烤烧结理想的间接材料.

节能

　　利用良好的导热和热稳定性，作热交换器，燃耗减少20%，节约燃料35%，使生产率****20-30%，特别是矿山选厂用排放输送管道的内放，其*程度是普通*材料的6--7倍.　

珠宝

合成碳化硅（SyntheticMoissanite）又名合成莫桑石、合成碳硅石（化学成分SiC），色散0.104比钻石(0.044）大，折射率2.65-2.69（钻石2.42），具有与钻石相同的金刚光泽，“火彩”更强，比以往任何*品更接近钻石。这是由美国北卡罗来那州的C3公司制造生产的，已拥有*生产合成碳化硅的专利，正在向全世界推广应用。

Siliconcarbideisoperation:

Siliconcarbide(SiC)isusingquartzsandandpetroleumcoke(orcoke),sawdustasrawmaterialthroughhightemperatureresistancefurnace*eltingandbecome.Siliconcarbideinnaturetherearealsoraremineral,themoSangShi.Siliconcarbideisalsocalledcarb*ilica.InthecontemporaryC,N,Bcellsandotherhightechnologynotoxiderefractoryrawmaterial,siliconcarbideisthemostwidelyusedandthemo*nomicone.Canbecalledcorundumorrefractorysand.Siliconcarbideiswithquartzsandandpetroleumcoke(orcoke),woodchip(productiongreensiliconcarbideneedaddsalt),andotherrawmaterialsininternalresistancefurnacehightemperature*eltingandbecome.Atprese*urcou*yindustrialproductionofsiliconcarbideisdividedi*blacksiliconcarbideandgreensiliconcarbidetwokinds,allisthesix-partycrystal,specificgr*ityof3.20~3.25,microhardnessfor2840-3320kg/bestcallusinduction.

Siliconcarbidehasblacksiliconcarbideandgreensiliconcarbidetwocommonlyusedbasethisvariety,belongtothealphaSiC.(1)blacksiliconcarbidecontainingSiCabout95%,itstoughnessishigherthangreensiliconcarbide,mostlyusedforprocessinglowtensilestrengthofmaterials,suchasglas*eramics,stone,refractorymaterial*astironandnonferrou*etal,etc.(2)thegreensiliconcarbidecontainingSiCabout97%above,sincethesharpnes*ostlyusedforprocessinghardalloy,titaniumalloyandopticalglass,alsousedforhoningcylindersleeveandfinegrindingHSStool.Inadditio*cubicsiliconcarbide,itisaspecialprocessofpreparingyellowcrystal,fortheproductionofabrasivetoolsuitableforbearingsuperfinishing,canmakethesurfaceroughnessfromRa32~0.16micronaprocessingtoRa0.04~0.02micr*.

Siliconcarbideduetochemicalstableperformance,highcoefficie*fthermalconductivity,thermalexpansioncoefficientis*all,wear-resistingperformanceisgood,exceptforabrasiveuseoutside,therearemanyotherUSES,suchas:inthespecialprocessofsiliconcarbidepowdercoatinginturbineimpellerorcylinderwall,canimprovethewearresistanceandprolongservicelife1~2time*adetoseniorrefractories,heatshock,*allvolume,lightweightandhighstrength,goodenergys*ingeffect.Lowgradesiliconcarbide(SiCcontainingabout85%)isanexcellentsc*enger,itcanspeedupthesteelspeedandeasyco*olofchemicalcom*ition,improvingthequalityofthesteel.Inaddition,alargenumberofsiliconcarbideisusedtomakeelectricheatingelementsiliconcarbiderod.

Siliconcarbidehardnessisverybig,hasgoodthermalconductivity,isakindofsemiconductor,hightemperatureoxidationresistancecan.

Siliconcarbidepur*e:

Siliconcarbidemainlyhasfourmajorapplicationfields,namely:functionalceramics,seniorrefractories,abrasiveandmetallurgicalrawmaterials.Atpresentsiliconcarbidecoarsematerialhasbeenabletosupplyinlargequantitie*annotcalculatehigh-techproducts,andtechnologycontenthighnanoscalesiliconcarbidepowderapplicati*horttimecan'tformscaleeconomy.

(1)asabrasive,canbeusedtodogrindingtool,suchasgrindingwheel,grindinghead,stone,sandtiling,etc.

(2)a*etallurgysc*engerandhightemperatureresistantmaterial.

(3)ofhighpuritycrystal,canbeusedinthemanufactureofsemiconductor,manufacturingsiliconcarbidefiber.

Mainapplication:usedfor3to12inche*onocrystallinesilicon,polycrystallinesilicon,potassiumarsenic,quartzcrystalandwirecutting.Thesolarenergyphotovoltaicindustry,semiconductorindustry,piezoelectriccrystalindustrybyprocessingmaterials.

Usedinsemiconductor,lightningrod,circuitelement,hightemperatureapplicati*,ultr*iole*tectionapparatu**tructionmaterials,astronomy,discbrakeandclutch,adieselparticulatefilter,filamentspyrometer,ceramicfilm,cuttingtools,heatingelement,nuclearfuel,jewelry,steel,equipmentmaintenance,catalystsupporter,etc.

abrasives

Mainlyusedformakin*rindingwheel,abrasivepaper,abrasivebelt,stone,grindin*ock,grindinghead,pasteandpvproduct*onocrystallinesilicon,polycrystallinesiliconandelectronicindustrypiezoelectriccrystalofgrinding,polishing,etc.

chemical

Canbeusedassteelmakingsc*engerandcastirontissueconditioner,canbeusedtomanufacturesilicontetrachloriderawmaterial,isthesiliconresinindustrythemainrawmaterial.Siliconcarbidesc*engerisanewtypeofstrongcom*itesc*enger,replacingthetraditionalsiliconpowdercarbonpowderwaskilled,andcomparingtheoriginalprocessvariousphysicalandchemicalperformancei*orestable,killedeffectisgood,thatkilledtimeisshortened,tos*eenergy,improvetheefficiencyoftheprocess,improvethequalityofthesteel,reducerawmaterialc*umption,reducethepollutionoftheenvironment,improveworkingconditi*,andimprovethecomprehensiveeconomicbenefitsofelectricfurnacehasimportantvalue.

Wear-resisting,refractoryandcorrosionresistantmaterial

Usingsiliconcarbidehascorrosionresistance,hightemperatureresistance,strength,thermalconductivity,goodimpactresistanceproperties,suchassiliconcarbideontheonehandcanbeusedinallkindsof*eltingfurnacelining,hightemperaturefurnacescomponent,siliconcarbideplate,plate,supportpieces,sa*er,siliconcarbidecrucible,etc.Ontheotherhandcanbeusedinnon-ferrou*etal*eltingindustryofhightemperatureindirectheatingmaterial,suchasverticalretortfurnace,distillationfurnacetray,aluminumelectrolyticcell,copper*eltingfurnacelining,zincpowderstovearcplate,thermocoupleprotectiontube,etc.;Usedtomakewear-resisting,corrosionresistant,hightemperatureresistant,advancedsiliconcarbideceramicmaterials;Canalsomaketherocketnozzle,gasturbineblade,etc.Inadditi*iliconcarbideandhighway,*iationrunwaysolarwaterheaterandoneoftheidealmaterial.

Non-ferrou*etal

Usingsiliconcarbidewithhightemperatureresistance,strength,goodthermalconductivity,impactresistance,hightemperatureindirectheatingmaterial,suchasstrongretortfurnace,distillationfurnacetray,aluminumelectrolyticcell,copper*eltingfurnacelining,zincpowderstovearcplate,thermocoupleprotectiontube,etc.

steel

Usingsiliconcarbideofcorrosionresistance,thermalshockresistancetowear,goodthermalconductivitycharacteristics,usedinlargescaleblastfurnaceliningtoimprovetheservicelife.

Metallurgyseparation

Siliconcarbidehardnessissecondonlytodiamond,strongwearresistance,itiswear-resistingpipe,impeller.Pumpchamber.Hydrocyclone,ore*etlinedwithidealmaterial,itswearresistanceiscastiron.Theservicelifeofru*er5-twentytimesanddefis*iationflighttrackofoneoftheidealmaterial.

Buildingmaterialsindustrialceramicgrindingwheel

Usethecoefficie*fthermalconductivity.Thermalradiation,highstrengthcharacteristic*anufacturingsheetkilnfurniture,notonlycanreducethekilnfurniturecapacity,butalsoimprovesthekilnlo*gcapacityandproductquality,shortentheproductioncycle,ceramicglazebakingsinteringidealindirectmaterials.

Energys*ing

Withgoodthermalconductivityandthermalstability,heatexchanger,burnupreducedby20%,andthefuels*in*5%,toimprovetheproductivityoftwenty-30%,especiallyminechoosefactorywiththedischargepipelineinsideput,thewear-resistingdegreeiscommonwearresistantmaterial

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