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Aluminium isimbi yepasi uye inokurumidza oxidize kana yasangana nemhepo. Kubva pane kemikari yekuona, iyo yakaumbwa oxide layer yakagadzikana kupfuura aruminiyamu pachayo uye ichi ndicho kiyi yekudzivirirwa kwekuora kwealuminium. Zvisinei, kushanda kwechinyorwa ichi kunogonawo kuderedzwa - nekugadzirisa zvinhu, semuenzaniso. Izvi ndizvo zvaunofanira kuziva.

Zvekushandisa uko kutaridzika kwekuona kusingakoshese, iyo yakasikwa oxide layer inogona kupa yakakwana kudzivirira ngura. Asi kana aruminiyamu ichizopendwa, kusungirirwa, kana kushandiswa munzvimbo inoora, kusati kwaitwa kurapwa kunodiwa kugadzira nzvimbo yakagadzikana uye yakanyatsotsanangurwa. Kuumbwa kwealuminium oxide layers kunogona kusiyana, zvichienderana nemamiriro ekuumbwa, alloying elements, uye zvinosvibisa. Kana mvura iripo panguva yeoxidation, mvura yekristaro inogonawo kunge iripo mune iyo oxide layer. Kugadzikana kweiyo oxide layer inokonzerwa nekuumbwa kwayo.

Aluminium oxide inowanzogadzikana mukati me pH ye 4 kusvika 9. Kunze kweiyi mutsara, njodzi yekuora yakanyanya. Nekuda kweizvozvo, zvese zvine acidic uye alkaline mhinduro dzinogona kushandiswa kupinza maaruminiyamu nzvimbo panguva yekutangira kurapwa.

Alloying zvinhu zvinokanganisa ngura

Kunze kwezvidziviriro zveiyo oxide layer, iyo corrosion resistance yealuminium alloys inotarirwa nekuvapo kwenoble intermetallic particles. Pamberi pemushonga we electrolyte, wakaita semvura kana munyu, ngura inogona kuitika, netwunonaka twunoita semakathodhi nenzvimbo dzakatenderedza dzichiva anode panonyungudika aluminium.

Kunyangwe zvimedu zvine zvidiki zvezvinhu zvinokudzwa zvinogona kuratidza hukuru hwepamusoro nekuda kwekunyungudika kwakasarudzika kwealuminum panzvimbo yazvo. Zvimedu zvine simbi zvinoderedza zvakanyanya kusimba, ukuwo mhangura inoderedzawo kusaora. Kuwanda kwetsvina, semutobvu, pamiganhu yezviyo zvinokanganisawo kusaita ngura.

Corrosion kuramba mu5000 uye 6000 akatevedzana aruminiyamu alloys

Aluminium alloys kubva ku5000 uye 6000 akatevedzana anowanzo ane yakaderera mazinga ealloying zvinhu uye intermetallic particles, zvichikonzera kukwirisa kusimba kwekuramba. Yakakwirira-yakasimba 2000-yakatevedzana alloys, inowanzoshandiswa muindasitiri yezvekubhururuka, kazhinji ine yakatetepa yakavharwa yearuminiyamu yakachena kudzivirira ngura.

Alloys akadzokororwa anowanzo kuve neakawedzera mazinga ezve trace elements, zvichiita kuti zvinyanye kutapukirwa nekuora. Nekudaro, mutsauko wekupokana kwekuora pakati peakasiyana alloys, uye kunyangwe mukati meiyo imwe alloy, nekuda kwemaitiro ekugadzira uye kupisa kurapwa, inogona kuve yakakura kupfuura iyo inokonzerwa nekutevera zvinhu chete.

Naizvozvo, zvakakosha kutsvaga ruzivo rwehunyanzvi kubva kumutengesi wako, kunyanya kana corrosion resistance yakakosha kuchigadzirwa chako. Aluminium haisi homogeneous zvinhu, uye kunzwisisa kwayo chaiyo zvimiro kwakakosha pakusarudza yakakodzera aluminium chigadzirwa kune zvaunoda.

Inzwa wakasunungukataura nesukana uchida kuziva zvakawanda.