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6063铝合金型材表面腐蚀的分析

发布时间:2021/04/25

    6063lvhejinxingcaibiaomianchuliguochengzhong,youshihuifaxianzaixingcaibiaomianyoubutongchengdude、wuguizepailiededianzhuanganhuisefushidian,zheizhongfushidianyuxinyuansuyinqidefushidianqixingzhuangbuyiyang,erqie,zaishengchanguochengzhongshijianduanchuxiande。youxierenrenweiqiyuanyinweicaozuozhemeiyouzhixingzhengquedebiaomianchuligongyi;caoyecunzaiyixieyouhaizazhilizi;caizhibuhao、jiazataiduo。duici,womenfenxiruxia。

  1fushidianchanshengdeyuanyinfenxi

  womengenjuduoniandeshengchanjingyanheduilvhejinxingcaishengchanzhonggegongyicanshudekaocha,yijiduicaozuozhezhixinggongyiqingkuangdegenzongdiaocha,renweichanshenggaileixinganhuisefushidiandezhuyaoyuanyinyouxiashujigefangmian:

  (1)youshiyinweimouxieyuanyinzairongzhuguochengzhongmei、guidetianjiabilibugeshi,shiω(mg)/ω(si)zai1.0~1.3fanweinei,biyibanbizhi1.73xiaohenduo(yibankongzhizai1.3~1.5fanweinei)。zheiyang,suiranmei、guichengfenhanliangzaiguiding(ω(mg)=0.45%~0.9%,ω(si)=0.2%~0.6%)fanweinei。danyoubufenfuyuguicunzai,zheibufenfuyuguichuyoushaoliangguiyiyoulitaicunzaiwai,zailvhejinzhongtongshihuixingchengsanyuanhuahewu。dangω(si)<ω(fe)shi,xingchengjiaoduodeα(al12fe3si)xiang,tashiyizhongcuixinghuahewu、dangω(si)>ω(fe)shi,zexingchengjiaoduodeβ(al9fe2si12)xiang,zheishiyizhonggengcuidezhenzhuanghuahewu,tadeyouhaizuoyongbiαxianggengda,wangwangshihejinrongyiyantaduanlie。zheixiezaihejinzhongxingchengdeburongxingdezazhixianghuoyoulitaizazhixiangwangwangjujizaijingjieshang,tongshixueruojingjiedeqiangduherenxing[1-3],chengweinaishixingjiaochadeboruohuanjie,fushishouxianconggaichuchansheng。

  (2)zaironglianguochengzhong,suiranmei、guidetianjiabilizaibiaozhunguidingdefanweinei,danyoushiyouyujiaobanbujunyunhebuchongfen,zaochengrongtizhongdeguifenbubujunyun,jubucunzaizhefujiquhepinfaqu。yinweiguizailvzhongderongjieduhenxiao,gongjingwendu577℃shiwei1.65%,ershiwenshijinwei0.05%,zhubanghouyejiuchanshenglechengfenbujunyundexianxiang,tazhijiefanyingdaochanpinshang,lvjitizhongcunzaishaoliangyoulitaiguishi,bujinjiangdihejindekangshixingneng,erqiecuhuahejindejingli[4]。

  (3)jiyashigegongyicanshudekongzhi,rubangpiyurewenduguogao,jinshujichuliusu、jiyashifenglengqiangdu、shixiaowenduyubaowenshijiandengkongzhibudangdouyichanshengguipianxiheyouli,shimeiheguimeiyouchengweimg2sixiang,eryoubufenyouliguicunzai。

  2biaomianchuliguochengzhongdefushixianxiang

  fuyuheyouliguiduode6003lvhejinxingcaizaibiaomianchulishichuxianxialiexianxiang:dangbaxingcaifangrusuanxingcao(liusuan15%~20%)shi,nengmingxiandiguanchadaozaixingcaibiaomianyouhenduoxiaoqipao,suizheshijianyanzhanghecaoyewendushenggao,fanyingsuduyuelaiyuekuai,zheibiaomingyuandianchidianhuaxuefushiyijingchansheng[5]。cishibaxingcaicongcaoyezhongtichulaiguancha,jiuhuizaixingcaibiaomianshangfaxianhenduogeyuzhengchangbiaomianyansebuyiyangdedian。jixujinxingyihoudechuli,rujianfushi、suanxingzhonghechuguangjiliusuanshi,zheizhonganhuisefushidianjiuhuibaoludegengjiamingxianhezhiguan。

  xinyuansuzaochengdefushiheguiyuansuyinqidefushizaiwaiguanxingtaishangyouyixiequbie。xinzaochengdefushidianxiangxuehua,yanjingjiexiangwaikuosan,shiyoushendudekeng[6,7]。erguiyuansuyinqidefushidianxiangjiazaanhuisedian,yanjingjiemianmeiyouxiangwaikuosan,yeganjuebudaoshendu.bingqiesuizhechulishijianyanzhang,shuliangyuelaiyueduo,zhidaofanyinghoucaizhongzhi。zheizhonganhuisediantongguoyanzhangfushishijianhuotuimochulikejibenshangxiaochuhuojianqing。

  3yufangcuoshi

  guiyinqi6063lvhejinxingcaifushidexingweishikeyiyufanghekongzhide,zhiyaoduiyuancailiaodejinhuo、hejinchengfenjinxingkongzhi,baozhengmei、guibilizai1.3~1.7fanweinei,bingqieduigegongxudecanshu(ruronglian、jiaoban、zhuzaolengqueshuiwen、bangpiyurewendu、jiyacuihuofenglengqiangdu、shixiaowenduheshijiandeng)jinxingyangekongzhi,bimianguichanshengpianxiheyouli,jinliangshiguihemeixingchengyouyidemg2siqianghuaxiang。

  ruguofaxianyouzheizhongguifushidianxianxiang,zaibiaomianchulishijiuyinggaitebiezhuyi,zaituozhichuyouguochengzhong,jinliangshiyongruojianxingcaoye,ruguotiaojianbuyunxu,yeyinggaizaisuanxingchuyouyezhongjinpaodeshijianjinliangsuoduan(hegedelvhejinxingcaizaisuanxingtuozhiyezhongfang20~30minwuwenti,eryouwentidexingcaishangzhinengfangzhi1~3min),erqieyihoudexishuiphzhiyaogaoyixie(ph>4,kongzhicl-hanliang),zaijianfushiguochengzhongjinliangyanzhangfushishijian,zaizhonghechuguangshiyaoshiyongxiaosuanchuguangye,zailiusuanshiyingjinkuaitongdianyanghuachuli,zheiyang,youguiyinqideanhuisefushidianjiubumingxian,kemanzushiyongyaoqiu。

  4jieshuyu

  guisuiranshi6063lvhejinxingcaizhongbukequeshaodezhuyaochengfen,danshiruguotianjialiangbudang,tianjiadeguimeiyouhemeixingchengmg2siqianghuaxiang,zaochengguidepianxiheyouli,jiuhuizaibiaomianchuliguochengzhongyichuxianguiyinqidelvhejinxingcaifushixianxiang。zaishengchanzhongduizhuyaohejinzuyuanhezazhiyijigongyicanshudouyaojinxingyangedekongzhi,fangzhicileixianxiangfasheng。