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为什么要铝合金阳极氧化

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为什么要铝合金阳极氧化

2019-08-24

    为了克服铝合金表面硬度、耐磨损性等方面的缺陷,扩大应用范围,延长使用寿命,厂家在表面处理技术成为铝合金使用中不可缺少的一环,而阳极氧化技术是目前应用广且成功的。

为什么要铝合金阳极氧化

    以铝或铝合金制品为阳极置于电解质溶液中,利用电解作用,使其表面形成氧化铝薄膜的过程,称为铝及铝合金的阳极氧化处理。其装置中阴极为在电解溶液中化学稳定性高的材料,如铅、不锈钢、铝等。铝阳极氧化的原理实质上就是水电解的原理。当电流通过时,在阴极上,放出氢气;在阳极上,析出的氧不仅是分子态的氧,还包括原子氧(O)和离子氧,通常在反应中以分子氧表示。作为阳极的铝被其上析出的氧所氧化,形成无水的氧化铝膜,生成的氧并不是全部与铝作用,一部分以气态的形式析出。

为什么要铝合金阳极氧化

    YINGZHIYANGJIYANGHUACHULICAIYONGZHILIUDIANYUANHUOZHILIUHEJIAOLIUDIEJIADIANYUAN。QIRONGYEZHONGLEIYEJIAODUO,YICAIYONGLIUSUANYINGZHIYANGJIHUACHULIJIAOPUBIAN。CAIYONGLIUSUANYINGZHIYANGJIYANGHUAFASHI,YINGKAOLVYINGXIANGYANGHUAMOCENGDEGEYINSU。(1)LIUSUANYANGHUACHULIDENONGDU:CHANGCAIYONG200-250 g/L,CAOYEDEXIANGDUIMIDU(SHIWENXIA)WEI1.12-1.15。(2)SHUI:SHUISHIYINGZHIYANGJIYANGHUACHULIDEZHUYAOCHENGFEN,YIBANCAIYONGZHENGLIUSHUIHUOLENGKAISHUI,ERBUYONGZILAISHUI,YINWEIZILAISHUIZHONGHANYOULVLIZI,DANGCl- >1%SHI,QIZHIJIANZAIYANGHUAGUOCHENGZHONGJIUHUIFUSHI,BINGCHUXIANBAIBAN。(3)YANGHUACHULIDEWENDU:WENDUSHIYINGXIANGYANGHUAMOZHILIANGDEZHONGYAOYINSUZHIYI。YANGEKONGZHIWENDU,QIYANGHUAMOZENGHOU,YINGDUTIGAOQIEGUANGHUA、ZHIMI。(4)DIANLIUMIDU:DIANLIUYESHIYINGXIANGYANGHUAMOZHILIANGDEZHONGYAOYINSUZHIYI,TAYUYANGHUAMODESHENGCHENGSUDU、YANGHUAMODEZUZHIYOUJIAODAGUANXI。DIANLIUMIDUGUODISHI,YANGHUAMODESHENGCHENGSUDUHUANMAN,CHULISHIJIANZENGJIA;FANZHI,GUOGAOSHI,HUIDAOZHIRONGYEHEDIANJIYINJIAOERXIAOYINGERGUORE。SHIYANGHUAMORONGJIESUDUZENGJIA,YINGDUXIAJIANG,BIAOMIANCUCAO、SHUSONGQIFEN。(5)CHUSHIDIANYAYUCHULISHIJIAN:YINGZHIYANGJIYANGHUACHULIDECHUSHIDIANYAYUSHIJIANDUIYANGHUAMOZHILIANGDEYINGXIANGYESHIHENDADE。CHUSHIDIANYAGUODA,HUIDAOZHIDIANLIUDEZENGJIA,JIAOERREHESHENGCHENGREJUZENG,CUSHIRONGJIESUDUMENGZENG,YANGHUAMOZERUAN,WUGUANGZE,QIFEN,BUNAIMO。DUIYUYANGHUACHULISHIJIAN,YIBANSHISUIZHEYANGHUACHULISHIJIANDEYANZHANG,YANGHUAMOHOUDUZENGJIA,DANDAOYIDINGSHIJIANHOU,RUOBUZENGJIAWAIJIADIANYA,YANGHUAMOSHIJIBUZENGJIA。RUGUOJIXUYANZHANGSHIJIAN,ZEYANGHUAMOYINGDUDI,SHUSONGQIFEN,XIANGFAN,YANGHUACHULISHIJIANTAIDUAN,YANGHUAMOHOUDUBOQIEBUNAIMO。(6)YANGHUACHULIRONGYEDEJIAOBAN:JIAOBANSUDUDAXIAOYUYANGHUAMODESHENGCHENGSUDU(YANGHUAMOZHILIANG)YOUGUAN。


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