Ngokukhula okukhawulezayo koqoqosho lwentlalo, indawo enkulu yolwandle kunye nobutyebi baselwandle obutyebileyo buqalisile ukungena kwinkalo yombono wabantu.Ulwandle yindlu enkulu yobutyebi, etyebileyo kwimithombo yebhayoloji, imithombo yamandla kunye nemithombo yamandla olwandle.Uphuhliso nokusetyenziswa kobuncwane baselwandle abunakwahlulwa kuphando kunye nophuhliso lwezixhobo ezikhethekileyo zaselwandle, kwaye ukukruneka nokuguga kwiindawo ezirhabaxa zaselwandle yimiba ephambili ethintela ukusetyenziswa kwezinto zaselwandle kunye nophuhliso lwezixhobo zaselwandle.Funda ukubola kunye nokuziphatha kokunxiba kwe-316L kunye ne-2205 yensimbi engenasici phantsi kweemeko ezimbini ezisetyenziswa ngokuqhelekileyo zamanzi olwandle: ukunxitywa kwamanzi olwandle kunye nokukhuselwa kwe-cathodic, kwaye usebenzise iindlela ezahlukeneyo zokuvavanya ezifana ne-XRD, i-metallography, uvavanyo lwe-electrochemical kunye ne-corrosion kunye nokunxiba i-synergy ukuhlalutya i-microstructure. utshintsho lwesigaba Ukusuka kwi-engile, umphumo wamanzi olwandle ukutyibilika ukunxiba kwi-corrosion kunye nokunxiba iipropathi zensimbi engenasici zihlalutywa.Iziphumo zophando zilandelayo:
(1) Ixabiso lokunxiba le-316L phantsi komthwalo ophezulu lincinci kunexabiso lokunxiba phantsi komthwalo ophantsi.I-XRD kunye nohlalutyo lwe-metallographic lubonisa ukuba i-316L ifumana ukuguqulwa kwe-martensitic ngexesha lokuguqa kwamanzi olwandle, kunye nokusebenza kakuhle kokuguqulwa kwayo malunga ne-60% okanye ngaphezulu;Ukuthelekisa amazinga enguqu ye-martensite phantsi kweemeko ezimbini zamanzi olwandle, kwafunyaniswa ukuba ukubola kwamanzi olwandle kuthintela inguqu ye-martensite.
(2) Ukuskena kwe-Potentiodynamic polarization kunye neendlela ze-electrochemical impedance zisetyenziselwa ukufunda impembelelo ye-316L utshintsho lwe-microstructural kwi-corrosion behavior.Iziphumo zibonise ukuba ukuguqulwa kwesigaba se-martensitic kuthintele iimpawu kunye nokuzinza kwefilimu ye-passive ebusweni bensimbi engenasici, ekhokelela kwi-corrosion yensimbi engenasici.Ukumelana nomhlwa buthathaka;Uhlalutyo lwe-electrochemical impedance (EIS) luphinde lwafikelela kwisigqibo esifanayo, kwaye i-martensite eyenziwe kunye ne-austenite engaguqukiyo ifom ye-microscopic yokudibanisa umbane, ethi iguqule ukuziphatha kwe-electrochemical yensimbi engenasici.
(3) Ukulahleka kwezinto316L intsimbi engenasiciphantsi kwamanzi olwandle kubandakanya ukukhuhlana okucocekileyo kunye nokulahleka kwezinto zokunxiba (W0), impembelelo ye-synergistic yokubola ekunxityweni (S') kunye nefuthe le-synergistic lokuguga ekudlekeni (S'), ngelixa ukuguqulwa kwesigaba se-martensitic kuchaphazela Ubudlelwane phakathi kwelahleko yemathiriyeli. inxalenye nganye icacisiwe.
(4) Umhlwa kunye nokuziphatha okunxibileyo kwe2205intsimbi enezigaba ezimbini phantsi kweemeko ezimbini zamanzi olwandle zaphononongwa.Iziphumo zibonise ukuba: izinga lokugqoka i-2205 ye-double-phase yentsimbi phantsi komthwalo ophezulu yayincinci, kwaye i-seawater sliding wear igugile yabangela ukuba isigaba se-σ senzeke kumphezulu wentsimbi ye-double-phase.Utshintsho lweMicrostructural olufana ne-deformations, dislocations kunye ne-lattice shifts luphucula ukunyanzeliswa kokugqoka kweentsimbi ezimbini;xa kuthelekiswa ne-316L, i-2205 ye-double-phase yentsimbi inezinga elincinci lokunxiba kunye nokumelana nokunxiba okungcono.
(5) Indawo yokusebenzela ye-electrochemical yasetyenziselwa ukuvavanya iimpawu ze-electrochemical of the wear surface of the two-phase steel phase.Emva kokutyibilika emanzini olwandle, amandla okuzitshabalalisa2205intsimbi yesigaba esimbini iyancipha kwaye ukuxinana kwangoku kwanda;ukusuka kwindlela yokuvavanya i-electrochemical impedance (EIS) nayo yagqiba ukuba ixabiso lokumelana nendawo yokunxiba yensimbi ye-duplex iyancipha kwaye ukuxhathisa kwe-corrosion yamanzi olwandle kuyancipha;Isigaba se-σ esiveliswe kukutyibilika kwentsimbi eyi-duplex ngamanzi olwandle kunciphisa i-Cr kunye ne-Mo element ejikeleze i-ferrite kunye ne-austenite, yenza i-duplex steel ibe sesichengeni sokutya kwamanzi olwandle, kunye nemingxuma yokugalela nayo ithanda ukwakheka kwezi ndawo zineziphene.
(6) Ukulahleka kwezinto2205 intsimbi duplexubukhulu becala ivela kwi-friction ecocekileyo kunye nokunxiba ilahleko yezinto, kubalwa malunga ne-80% ukuya kwi-90% yelahleko iyonke.Xa kuthelekiswa ne-316L yensimbi engenasici, ilahleko yezinto eziphathekayo inxalenye nganye ye-duplex steel inkulu kune-316L.Incinci.
Isishwankathelo, kunokugqitywa ukuba i-2205 ye-double-phase-steel inokumelana ne-corrosion engcono kwindawo yamanzi olwandle kwaye ifaneleke ngakumbi ukusetyenziswa kwi-corrosion yamanzi olwandle kunye nokusingqongileyo.
Ixesha lokuposa: Dec-04-2023