Ukunyangwa kwe-oxidation yesinyithi kukubunjwa kwefilimu ye-oxide ekhuselayo kumphezulu wesinyithi ngokusebenzisa i-oxygen okanye i-oxidants, ekhusela ukubola kwesinyithi. Iindlela ze-oxidation ziquka i-thermal oxidation, i-alkaline oxidation, kunye ne-acidic oxidation.
Ukunyangwa kwe-oxidation yesinyithi kukubunjwa kwefilimu ye-oxide ekhuselayo kumphezulu wesinyithi ngokusebenzisa i-oxygen okanye i-oxidants, ekhusela ukubola kwesinyithi. Iindlela ze-oxidation ziquka i-oxidation ye-thermal, i-alkaline oxidation, i-acidic oxidation (yezinyithi ezimnyama), i-chemical oxidation, i-anodic oxidation (yezinyithi ezingenayo i-ferrous), njl.
Iimveliso zetsimbi zokufudumeza ukuya kwi-600 ℃ ~ 650 ℃ usebenzisa indlela ye-thermal oxidation, kwaye emva koko ubaphathe ngomphunga oshushu kunye neearhente zokunciphisa. Enye indlela kukuntywilisela iimveliso zentsimbi kwityuwa yesinyithi yealkali enyibilikisiweyo emalunga ne-300 ℃ kunyango.
Xa usebenzisa indlela ye-alkaline oxidation, ntywilisela amalungu kwisisombululo esilungisiweyo kwaye uwafudumeze ukuya kwi-135 ℃ ukuya kwi-155 ℃. Ubude bonyango buxhomekeke kumxholo wekhabhoni kwiindawo. Emva kokunyangwa kwe-oxidation yeendawo zetsimbi, zihlambulule ngamanzi anesepha aqulethe i-15g/L ukuya kwi-20g/L ku-60 ℃ ukuya ku-80 ℃ imizuzu emi-2 ukuya kwemi-5. Emva koko zihlanjululwe ngamanzi abandayo kunye nashushu ngokulandelelanayo kwaye uzivuthele okanye zomise imizuzu emi-5 ukuya kwe-10 (kwiqondo lobushushu le-80 ℃ ukuya kuma-90 ℃).
Indlela ye-3 ye-asidi ye-asidi ibandakanya ukubeka iinxalenye kwisisombululo se-acidic kunyango. Xa kuthelekiswa nendlela ye-alkaline oxidation, indlela ye-acidic oxidation iyonga kakhulu. Ifilimu ekhuselayo eveliswe kumphezulu wesinyithi emva kokuba unyango lunokumelana nokukhula okuphezulu kunye namandla omatshini kunefilimu ebhityileyo eyenziwe emva konyango lwe-alkaline oxidation.
Indlela ye-oxidation yeekhemikhali ifaneleka kakhulu kunyango lwe-oxidation yeentsimbi ezingenayo i-ferrous ezifana ne-aluminium, ubhedu, i-magnesium, kunye ne-alloys yazo. Indlela yokucubungula kukubeka iinxalenye kwisisombululo esilungisiweyo, kwaye emva kokuphendulwa kwe-oxidation ethile kwiqondo lokushisa elithile kwixesha elithile, ifilimu ekhuselayo yenziwa, enokuthi ihlambuluke kwaye yomiswe.
Indlela ye-Anodizing yenye indlela ye-oxidation yeentsimbi ezingenayo i-ferrous. Yinkqubo yokusebenzisa iinxalenye zetsimbi njenge-anodes kunye neendlela ze-electrolytic ukwenza iifilimu ze-oxide kwiindawo zazo. Olu hlobo lwefilimu ye-oxide lunokusebenza njengefilimu ye-passivation phakathi kwesinyithi kunye nefilimu yokugqoka, kunye nokwandisa amandla okudibanisa phakathi kweengubo kunye neentsimbi, ukunciphisa ukungena komswakama, kwaye ngaloo ndlela ukwandisa ubomi benkonzo yeengubo. Isetyenziswe ngokubanzi kwinqanaba elisezantsi lokupeyinta.
Ixesha lokuposa: Dec-16-2024
