Ingxubevange yobheduumhlwa
i-atmospheric corrosion
I-atmospheric corrosion of metal materials ikakhulu ixhomekeke kumphunga wamanzi emoyeni kunye nefilimu yamanzi phezu kwezinto eziphathekayo.Ukufuma okunxulumene ne-atmosfera xa izinga lokutya kwe-atmosfera yesinyithi liqalisa ukunyuka kabukhali kubizwa ngokuba bubumanzi obubalulekileyo.Ukufuma okubalulekileyo kweealloyi zobhedu kunye nezinye iintsimbi ezininzi kuphakathi kwe-50% kunye ne-70%.Ungcoliseko olukwi-atmosfera lunefuthe elibonakalayo kwi-corrosion ye-alloys yobhedu.
Ukubola kwezityalo kunye negesi ephumayo ekhutshwa yimizi-mveliso yenza igesi yeammonia nehydrogen sulfide ibekho emoyeni.I-ammonia ikhawulezisa ngokukhawuleza ukubola kobhedu kunye ne-alloys yobhedu, ngakumbi uxinzelelo lwe-corrosion.Izinto ezingcolisa i-acidic ezifana ne-C02, i-SO2, i-NO2 kwi-atmosphere ye-industrial industry iyachithwa kwifilimu yamanzi kunye ne-hydrolyzed, eyenza ifilimu yamanzi i-acidified kunye nefilimu yokukhusela ingazinzi.
indawo yokutshiza umhlwa
Ukuziphatha kokutya kwealloyi zobhedu kwindawo yokuchaphaza kwamanzi olwandle kusondele kakhulu kuleyo ikwindawo yolwandle.Nayiphi na ingxubevange yobhedu enokumelana nokudumba okulungileyo kwiatmosfera erhabaxa yaselwandle nayo iya kuba nokuxhathisa okulungileyo kokuhlwa kwindawo yokuchaphaza.Indawo yokuchaphaza ibonelela ngeoksijini eyaneleyo yokukhawulezisa ukubola kwentsimbi, kodwa yenza kube lula ukuba iialloyi zobhedu kunye nobhedu zihlale zingenzi nto.Izinga lokubola kweealloyi zobhedu ezivezwe kwindawo yokutshiza ngokuqhelekileyo alidluli kwi-5 μm/a.
ukubola koxinzelelo
Ukuqhekeka kwe-quaternary yobhedu ngummeli oqhelekileyo woxinzelelo lwe-corrosion yealloys zethusi.Ukuqhekeka kwamaxesha onyaka kwafunyanwa ekuqaleni kwenkulungwane yama-20 kwaye kubhekiselele kwiintanda kwinxalenye yebhokisi yembumbulu apho icutheka ukuya kwintloko yemfazwe.Esi siganeko sihlala sisenzeka kwiindawo ezitshisayo, ngakumbi ngexesha lemvula, ngoko ke kubizwa ngokuba kukuqhekeka kwamaxesha onyaka.Ngenxa yokuba inxulumene ne-ammonia okanye i-ammonia derivatives, ikwabizwa ngokuba yi-ammonia cracking.Enyanisweni, ubukho be-oksijini kunye nezinye i-oxidants, kunye nobukho bamanzi, nazo ziimeko ezibalulekileyo zoxinzelelo lwe-corrosion yobhedu.Ezinye iindawo ezinokubangela uxinzelelo lwe-corrosion cracking ye-alloys zethusi ziquka: umoya, amanzi ahlambulukileyo, kunye namanzi olwandle angcoliswe kakhulu yi-SO2;iasidi yesulfuric, i-nitric acid, umphunga, kunye nezinyibiliko ezinamanzi ezifana ne-tartaric acid, i-acetic acid, kunye ne-citric acid, i-ammonia kunye ne-mercury esetyenziselwa ukucoca iindawo.
Ukubola komhlwa
I-Dezincification ye-Brass luhlobo oluqhelekileyo lwe-alloy ye-copper de-composition corrosion, enokuthi yenzeke ngaxeshanye kunye nenkqubo yoxinzelelo lwe-corrosion, okanye ingenzeka yodwa.Kukho iindlela ezimbini zokususa i-dezincification: enye i-leyared exfoliation uhlobo lwe-dezincification, ekwimo ye-corrosion efanayo kwaye ayinabungozi kangako ekusebenziseni izinto;Amandla ezinto eziphathekayo ayancipha kakhulu, kwaye ingozi inkulu.
Ukonakala kwimekobume yaselwandle
Ukongeza kummandla womoya wolwandle, ukuthotywa kwealloyi zobhedu kwimeko-bume yaselwandle ikwabandakanya indawo yokuchaphaza kwamanzi olwandle, indawo yoluhlu lwamaza kunye nendawo yokuntywiliselwa ngokupheleleyo.
Ixesha lokuposa: Jul-01-2022