Unyango lwe-oxidation kwiimetali kukwenziwa kwefilimu ye-oxide ekhuselayo kumphezulu weemetali ngokusebenzisana neoksijini okanye ii-oxidants, nto leyo ethintela ukubola kwesinyithi. Iindlela ze-oxidation ziquka i-thermal oxidation, i-alkaline oxidation, kunye ne-acidic oxidation.
Unyango lwe-oxidation yeemetali kukwenziwa kwefilimu ye-oxide ekhuselayo kumphezulu weemetali ngokusebenzisana neoksijini okanye ii-oxidants, nto leyo ethintela ukubola kwesinyithi. Iindlela ze-oxidation ziquka i-thermal oxidation, i-alkaline oxidation, i-acidic oxidation (kwiimetali ezimnyama), i-chemical oxidation, i-anodic oxidation (kwiimetali ezingezizo iiferrous), njl.njl.
Fudumeza iimveliso zesinyithi ukuya kuma-600 ℃ ~ 650 ℃ usebenzisa indlela ye-thermal oxidation, uze uziphathe ngomphunga oshushu kunye nee-reducing agents. Enye indlela kukuntywilisela iimveliso zesinyithi kwiityuwa ze-alkali metal ezinyibilikisiweyo malunga nama-300 ℃ ukuze zinyangwe.
Xa usebenzisa indlela ye-alkaline oxidation, faka ezi ndawo kwisisombululo esilungisiweyo uze uzifudumeze ukuya kuthi ga kwi-135 ℃ ukuya kwi-155 ℃. Ubude bonyango buxhomekeke kumxholo wekhabhoni kwezi ndawo. Emva konyango lwe-oxidation kwiindawo zesinyithi, zihlambe ngamanzi anesepha aqulethe i-15g/L ukuya kwi-20g/L kwi-60 ℃ ukuya kwi-80 ℃ imizuzu emi-2 ukuya kwemi-5. Emva koko zihlambe ngamanzi abandayo nashushu ngokulandelelana uze uzivuthele okanye uzomise imizuzu emi-5 ukuya kweli-10 (kubushushu obuyi-80 ℃ ukuya kwi-90 ℃).
Indlela ye-3 acid oxidation ibandakanya ukubeka iindawo kwisisombululo se-asidi ukuze kunyangwe. Xa kuthelekiswa nendlela ye-alkaline oxidation, indlela ye-acid oxidation ingabizi kakhulu. Ifilimu ekhuselayo eveliswa kumphezulu wesinyithi emva konyango inokumelana nokugqwala okuphezulu kunye namandla oomatshini kunefilimu encinci eveliswa emva konyango lwe-alkaline oxidation.
Indlela yokunyibilikisa iikhemikhali ifanelekile kakhulu kunyango lokunyibilikisa iintsimbi ezingezizo iintsimbi ezifana ne-aluminium, i-copper, i-magnesium, kunye nee-alloys zazo. Indlela yokucubungula kukubeka iindawo kwisisombululo esilungisiweyo, kwaye emva kwempendulo ethile yokunyibilikisa iintsimbi kubushushu obuthile kangangexesha elithile, kwenziwa ifilimu ekhuselayo, enokususwa ize yomiswe emva koko.
Indlela ye-anodizing yenye indlela yokwenza i-oxidation yeentsimbi ezingezizo i-ferrous. Yinkqubo yokusebenzisa iindawo zesinyithi njengee-anode kunye neendlela ze-electrolytic ukwenza iifilimu ze-oxide kumphezulu wazo. Olu hlobo lwefilimu ye-oxide lungasebenza njengefilimu yokudlulisa phakathi kwesinyithi kunye nefilimu yokugquma, kunye nokwandisa amandla okubopha phakathi kweengubo kunye neentsimbi, ukunciphisa ukungena komswakama, kwaye ngaloo ndlela kwandise ubomi benkonzo yeengubo. Isetyenziswa kakhulu kumaleko asezantsi okupenda.
Ixesha leposi: Disemba-16-2024
