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铝(Lu)氧(Yang)化(Hua)加(Jia)工(Gong)

铝(Lu)氧(Yang)化(Hua)加(Jia)工(Gong)

铝(Lu)氧(Yang)化(Hua)加(Jia)工(Gong)过(Guo)程(Cheng):(?)金(Jin)属(Shu)材(Cai)料(Liao)在(Zai)电(Dian)解(Jie)质(Zhi)溶(Rong)液(Ye)中(Zhong),(?)通(Tong)过(Guo)外(Wai)施(Shi)阳(Yang)极(Ji)电(Dian)流(Liu)使(Shi)其(Qi)表(Biao)面(Mian)形(Xing)成(Cheng)氧(Yang)化(Hua)膜(Mo)的(De)一(Yi)种(Zhong)材(Cai)料(Liao)保(Bao)护(Hu)技(Ji)术(Shu)。(?)又(You)称(Cheng)表(Biao)面(Mian)阳(Yang)极(Ji)氧(Yang)化(Hua)。(?)金(Jin)属(Shu)材(Cai)料(Liao)或(Huo)制(Zhi)品(Pin)经(Jing)过(Guo)表(Biao)面(Mian)阳(Yang)极(Ji)化(Hua)处(Chu)理(Li)后(Hou),(?)其(Qi)耐(Nai)蚀(Shi)性(Xing)、(?)硬(Ying)度(Du)、(?)耐(Nai)磨(Mo)性(Xing)、(?)绝(Jue)缘(Yuan)性(Xing)、(?)耐(Nai)热(Re)性(Xing)等(Deng)均(Jun)有(You)大(Da)幅(Fu)度(Du)提(Ti)高(Gao)。(?)实(Shi)施(Shi)阳(Yang)极(Ji)化(Hua)处(Chu)理(Li)较(Jiao)多(Duo)的(De)金(Jin)属(Shu)材(Cai)料(Liao)是(Shi)铝(Lu)。(?)铝(Lu)的(De)阳(Yang)极(Ji)氧(Yang)化(Hua)一(Yi)般(Ban)在(Zai)酸(Suan)性(Xing)电(Dian)解(Jie)液(Ye)中(Zhong)进(Jin)行(Xing),(?)以(Yi)铝(Lu)为(Wei)阳(Yang)极(Ji)。(?)在(Zai)电(Dian)解(Jie)过(Guo)程(Cheng)中(Zhong),(?)氧(Yang)的(De)阴(Yin)离(Li)子(Zi)与(Yu)铝(Lu)作(Zuo)用(Yong)产(Chan)生(Sheng)氧(Yang)化(Hua)膜(Mo)。(?)这(Zhe)种(Zhong)膜(Mo)初(Chu)形(Xing)成(Cheng)时(Shi)不(Bu)够(Gou)细(Xi)密(Mi),(?)虽(Sui)有(You)一(Yi)定(Ding)电(Dian)阻(Zu),(?)但(Dan)电(Dian)解(Jie)液(Ye)中(Zhong)的(De)负(Fu)氧(Yang)离(Li)子(Zi)仍(Reng)能(Neng)到(Dao)达(Da)铝(Lu)表(Biao)面(Mian)继(Ji)续(Xu)形(Xing)成(Cheng)氧(Yang)化(Hua)膜(Mo)。(?)随(Sui)着(Zhuo)膜(Mo)厚(Hou)度(Du)增(Zeng)大(Da),(?)电(Dian)阻(Zu)也(Ye)变(Bian)大(Da),(?)从(Cong)而(?)电(Dian)解(Jie)电(Dian)流(Liu)变(Bian)小(Xiao)。(?)这(Zhe)时(Shi),(?)与(Yu)电(Dian)解(Jie)液(Ye)接(Jie)触(Chu)的(De)外(Wai)层(Ceng)氧(Yang)化(Hua)膜(Mo)发(Fa)生(Sheng)化(Hua)学(Xue)溶(Rong)解(Jie)。(?)当(Dang)铝(Lu)表(Biao)面(Mian)形(Xing)成(Cheng)氧(Yang)化(Hua)物(Wu)的(De)速(Su)度(Du)逐(Zhu)渐(Jian)与(Yu)化(Hua)学(Xue)溶(Rong)解(Jie)的(De)速(Su)度(Du)平(Ping)衡(Heng)时(Shi),(?)这(Zhe)一(Yi)氧(Yang)化(Hua)膜(Mo)便(Bian)可(Ke)达(Da)到(Dao)这(Zhe)一(Yi)电(Dian)解(Jie)参(Can)数(Shu)下(Xia)的(De)较(Jiao)大(Da)厚(Hou)度(Du)。(?)铝(Lu)的(De)阳(Yang)极(Ji)氧(Yang)化(Hua)膜(Mo)外(Wai)层(Ceng)多(Duo)孔(Kong),(?)容(Rong)易(Yi)吸(Xi)附(Fu)染(Ran)料(Liao)和(He)有(You)色(Se)物(Wu)质(Zhi),(?)因(Yin)而(?)可(Ke)进(Jin)行(Xing)染(Ran)色(Se),(?)提(Ti)高(Gao)其(Qi)装(Zhuang)饰(Shi)性(Xing)。(?)氧(Yang)化(Hua)膜(Mo)再(Zai)经(Jing)热(Re)水(Shui)、(?)高(Gao)温(Wen)水(Shui)蒸(Zheng)气(Qi)或(Huo)镍(Nie)盐(Yan)封(Feng)闭(Bi)处(Chu)理(Li)后(Hou),(?)还(Huan)能(Neng)进(Jin)一(Yi)步(Bu)提(Ti)高(Gao)其(Qi)耐(Nai)蚀(Shi)性(Xing)和(He)耐(Nai)磨(Mo)性(Xing)。(?)


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