Protection nokumelana

iimveliso Metal ngokuhamba kwexesha ngokuthe ligqunywe patina ngekopi. Ukwakhiwa kutshatyalaliswa ziphambuke eluthulini. Ukuze siphephe iziphumo Lilishwa ezinjalo, kufuneka uyazi into ngokudleka lwesinyithi kunye nezokhukhusela nxamnye nayo. Metal ufakwa ukuthotywa ngenxa yokuba sesichengeni kokusingqongileyo lwangaphandle, nto leyo electrochemically okanye afakwe. nokumelana Chemical livela eendaba abanako yokwenza yangoku yombane (ioli, igesi, alkoholi). Yena ndazi ngokupheleleyo zonke iintsimbi. nokumelana Electrochemical kwenzeka ngenxa isenzeko ifilimu metal electrolytic ngenxa kwiimpembelelo zokusingqongileyo. Ngokukodwa, indlu lweTyuwa ifuthe-technical ukusebenziswa kwiindlela ebusika, kunye nemisinga singawi. Iindlela kunye neendlela ngazo yenziwa umhlwa, zininzi.

Ethandwa kakhulu kwaye kwande ukusetyenziswa Coatings. Baya kuza metal nezimbiwa non-zalo. ukusebenza ngokufanelekileyo ukunika Ipeyinti esekelwe ekudaleni ubuxoki iipholima. Ezingaphiliyo coating non-ebuntsimbi yi ezininzi ezahlukeneyo. Ezi ziquka Iipeyinti (i-oyile, alkyd kunye lwawo) kunye ivanishi (umthi tar, ngetha zokwenziwa). Xa kusetyenziswa ngolo khuselo umhlwa kudala obhityileyo umboniso lokunithumelela le nesinyithi kwiindawo ukufuma kunye nefuthe kokusingqongileyo. Iipeyinti kunye ivanishi kulula kakhulu ukuba isicelo, ezifikelelekayo. Ekuqaleni komsebenzi kuyimfuneko ukulandela ngokungqongqo netheknoloji isicelo sabo. Iphepha wobuso metal kuyimfuneko maleko eziliqela ukukhusela ngcono izakhiwo kwimpembelelo komoya.

Ipeyinti ebuntsimbi inhibitors ukwahlukanisa iindlela ezimbini. Ukutyabeka lokuqala wombingelelo ziquka isiqalelo esithambileyo esimhlophe, zinc, aluminiyam. Eyesibini - umhlwa-resistant enamathela sobhedu, isilivere, ilothe, nickel kunye chromium.

Kuxhomekeka kwindlela indlela inyathelo ukhuseleko umhlwa, ibizwa ngokuba le cathode okanye anode. Kukho Ipeyinti yentsimbi, inhibitors kunye electronegativity enkulu, kunye Ipeyinti ukuba electropositive eliphezulu. Anode Ipeyinti kuba uhlobo yokuqala, cathode - ukuya wesibini. Ukusetyenziswa kwe-aluminiyam nezinki, njengoko cathode njengoko Ipeyinti anode - nickel, ikopolo, itoti.

Zininzi iindlela zokukhusela isinyithi nxamnye ngokudleka nokubandakanya embodiments daka eziliqela. Umzekelo, ukuba isicelo kwemichiza inhibitors kusetyenziswa indlela yokutyabeka izakhiwo ebuntsimbi ezinye iintsimbi: aluminiyam, zinc.

Ukuba isakhiwo metal sele ngumhlwa, ngoko ukuba wehlise ukutshatyalaliswa passivating ongeziweyo kunye inhibitor. Ukuba negalelo inhibition kweenkqubo ngokudleka in ialakalin neemeko cala iioksidenti olomeleleyo ezifana ialakalin umhlaba kunye nesinyithi kwealkali. Ukukhusela wezifundo kwi ufakelo lwesamente, kusetyenziswa calcium nitrate-nayitrayithi.

Xa ufuna ukukhuselwa umhlwa, ezenzeka phantsi kwempembelelo ngenxa yemeko ezisingqongileyo kwaye komoya, sebenzisa inhibitors eguquguqukayo, ezo ngezinto adsorb phezu komphezulu metal evela emoyeni okanye incitshisiwe kwaso ukwenza umaleko obhityileyo.