Iindaba

I-Aluminiyam sisiseko sesinyithi kwaye ngokukhawuleza i-oxidize xa idibana nomoya. Ukusuka kumbono weekhemikhali, umgca we-oxide owenziweyo uzinzile ngakumbi kune-aluminium ngokwayo kwaye oku kuyisitshixo sokumelana nokubola kwe-aluminium. Nangona kunjalo, ukusebenza kolu luhlu kunokuncitshiswa - nge-alloying elements, umzekelo. Yile nto ekufuneka uyazi.

Ukusetyenziswa apho inkangeleko ebonakalayo ingabalulekanga, umaleko we-oxide wendalo unokubonelela ngokhuseleko olwaneleyo lokutya. Kodwa ukuba i-aluminium imele ipeyinti, iboshwe, okanye isetyenziswe kwindawo eyonakalisayo, unyango lwangaphambili luyimfuneko ukudala umgangatho ozinzileyo kunye ochazwe kakuhle. Ukubunjwa kwe-aluminium oxide layers kunokuhluka, kuxhomekeke kwiimeko zokubunjwa, izinto ezixutywayo, kunye nokungcola. Xa amanzi ekhona ngexesha le-oxidation, amanzi ekristale anokuthi abekhona kwi-oxide layer. Ukuzinza komgangatho we-oxide kuthonywa ngokubunjwa kwayo.

I-aluminium oxide ihlala izinzile ngaphakathi kwe-pH ye-4 ukuya kwi-9. Ngaphandle kolu luhlu, umngcipheko wokubola uphezulu. Ngenxa yoko, zombini izisombululo ze-acidic kunye ne-alkaline zingasetyenziselwa ukutshiza umphezulu we-aluminium ngexesha lonyango lwangaphambili.

Izinto ezidibanisayo ezichaphazela ukubola

Ngaphandle kweempawu ezikhuselayo zomaleko we-oxide, ukuxhathisa kwe-corrosion ye-aluminium alloys kuchongwa kubukho bamasuntswana ahloniphekileyo e-intermetallic. Xa kukho isisombululo se-electrolyte, njengamanzi okanye ityuwa, ukubola kunokwenzeka, kunye neengqungquthela ezihloniphekileyo ezisebenza njenge-cathodes kunye neendawo ezijikelezayo zibe yi-anodes apho i-aluminium inyibilika.

Kwanamasuntswana anemilinganiselo emincinci yezinto ezibekekileyo anokubonisa ubuhandiba obuphezulu ngenxa yokuchithwa okukhethiweyo kwealuminiyam kumphezulu wawo. Amalungu aqulethe i-iron anciphisa kakhulu ukuxhathisa ukubola, ngelixa ubhedu lukwanciphisa ukuxhathisa ukubola. Ukugxila okuphezulu kobumdaka, njengelothe, kwimida yeenkozo nako kunegalelo elibi ukuxhathisa umhlwa.

Ukumelana nokubola kwi-5000 kunye ne-6000 ye-aluminium series alloys

I-alloys ye-aluminiyam evela kwi-5000 kunye ne-6000 series ngokubanzi inamanqanaba aphantsi ezinto ezixutywayo kunye namasuntswana e-intermetallic, okukhokelela ekuxhathiseni okuphezulu kakhulu. Amandla aphezulu angama-2000-series alloys, asetyenziswa ngokuqhelekileyo kwishishini le-aviation, ahlala enesigqubuthelo esincinci se-aluminium ecocekileyo ukukhusela ukubola.

Iialloyi ezisetyenzisiweyo zikholisa ukuqulatha amanqanaba awondisiweyo ezinto zomkhondo, zizenze zibe sesichengeni sokuhlwa. Nangona kunjalo, ukwahluka kokumelana nokubola phakathi kwe-alloys ezahlukeneyo, kwaye nangaphakathi kwi-alloy efanayo, ngenxa yeendlela zokuvelisa kunye nonyango lobushushu, kunokuba mkhulu kunoko kubangelwa zizinto zomkhondo zodwa.

Ke ngoko, kubalulekile ukufuna ulwazi lobuchwephesha kumboneleli wakho, ngakumbi ukuba ukuxhathisa umhlwa kubalulekile kwimveliso yakho. I-Aluminium ayiyona nto i-homogeneous, kwaye ukuqonda iimpawu zayo ezithile kubalulekile ekukhetheni imveliso ye-aluminium efanelekileyo kwiimfuno zakho.

Zive ukhululekile ukubaQhagamshelana nathiukuba ufuna ukwazi ngakumbi.