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ID:32705502
大小:3.00 MB
页数:46页
时间:2019-02-14
《添加剂对铝碳质长水口性能的影响》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、y536997西安建筑科技大学硕士学位论文添加剂对铝碳质长水口性能的影响专渡:李葶瓣学硕士生:张勤学指导教师:蒋明学李栅生平增福摘要:测定了锈碳耪辩添热遥爨懿添鸯篓热(Si粉、Al粉、B#鞠Si+8;C及矗l+粥)后,材料性能及显微结构的变化情况。在实际中间包进行了抗渣试验,研究了添加剂对楗攀}按渣经键性戆影璃。研究表明:加入3%的si粉、A1粉、B。C等添加剂可有数改善A1。O。一c材料的常瀑强度,提高材料的抗氧化性,虽加入B£添热刹最好,不仅可以撼赢材料的常温强度,而且襁材料的抗氧化性和抗热震性方面
2、效果尤为突出。在A1:03一C材料中加入复合添加剂,可降低材料的龆气孔率,提高材料的常温强度。添加si+&c的复合添龆裁跑添蕊Ai手8。C,有更蠢的抗氧纯经。试验中所采用的几种添加剂对A1。0。一c材料的抗侵蚀性都有不同程度的改善,特鬟是si粉蕊糖入蠢裂予提囊誊孝精敬菝侵缓瞧戆,当Si粉翻&e复合癞入隧孛芎瓣豹抗侵蚀性更好。在添加Btc的A1。O。一C材料中,发现了B。c与材料中锆英来石分解的氧倦锆反应生成zrB2。综合考虑,在Al籼一C材料中添加复合添加剂有利于其性能的改善。综合分析材料的强度、抗氧化
3、性、抗热震性、抗侵蚀及价格诸要素,对Al。嘎~c材料最佳的添加荆为;Si2%+&Cl%。【关键漏】添热裁锯碳榜料长永弱鞭蜜建筑辩技大学醭±学经论文EffectsofAdditivesonPropertiesofAl203-GraphiteLadleShroudSpecialty:MaterialsScienceMasterCandidate:ZhangQinxueTutor:JiangMingxue,LiLiusheng,PingZengfuA黔STRACTPropertiesandmicrostmcm
4、resofA1203-CmaterialswithsuitableamountofadditlvessuchasSipowder,AIpowder,B4C,Si+B4CandAI+B4Cwereexamined.Slagresistancetestwascarriedoutinttmdishatplantsite.Andtheeffectsofadditivesonslagresistanceofthematerialswerestudied.蚤搀resultsshowthattheadditionof
5、3wt%additivesuchasSipowder,A1powderorB4CiseriectivetoincreaseCMORandtoimproveoxidationresistanceofA120PCmaterials.AndtheB4Cadditivehasshownthebesteffect,notonlyinincreasingtheCMORofthematerials.butinimprovingremarkablytheoxidationresistanceandthermalshoc
6、kresistance.TheadditionofcompositeadditiveinA1203.CmaterialCandecreasetheapparentpomsityandincreasetheCMORrespective/):Thematerial砸mtheadditiveofSi+B4CiSmoreresistanttooxidationthanthatwithAI+B4C.Itisfoundthatalltheusedadditiveseanimpmvetheslagresistance
7、ofAl203一Cmaterialstosomeextent,inwhichtheadditionofSipowderhasshownbettereffeCtandthecompositeadditiveofSi+B4Cthebest.AnditisalsofoundthatZrB2wasformedthroughthereactionofB4CandZr02derivedfromthedecompositionofzirconia—mulliteinthematerialswithB4C.ItCanb
8、econcludedthattheadditionofthecompositeadditivesiSmoree箍cientintheimprovementofthepropertiesofA1203一Cmaterialthanthatofthesingleadditives+AndconsideringthefactorssuchMOP.,oxidationresistance,thermalshockresistance,slagresi
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