Ngophuhliso olukhawulezileyo loqoqosho lwentlalo, indawo enkulu yolwandle kunye nemithombo yolwandle etyebileyo iqalile ukungena kwintsimi yombono wabantu. Ulwandle luyindawo enkulu yobutyebi, etyebile kwimithombo yebhayoloji, imithombo yamandla kunye nemithombo yamandla olwandle. Uphuhliso kunye nokusetyenziswa kwemithombo yolwandle akwahlulwa kuphando kunye nophuhliso lwezixhobo ezikhethekileyo zaselwandle, kwaye ukungqubana kunye nokuguguleka kwiindawo ezinzima zaselwandle yimiba ephambili ethintela ukusetyenziswa kwezixhobo zaselwandle kunye nophuhliso lwezixhobo zaselwandle. Funda indlela yokuziphatha kokuguguleka kunye nokuguguleka kwentsimbi engagqwali ye-316L kunye ne-2205 phantsi kweemeko ezimbini zamanzi olwandle ezisetyenziswa rhoqo: ukuguguleka kokuguguleka kwamanzi olwandle kunye nokukhuselwa kwe-cathodic, kwaye usebenzise iindlela ezahlukeneyo zovavanyo ezifana ne-XRD, i-metallography, uvavanyo lwe-electrochemical kunye ne-corrosion kunye ne-wear synergy ukuhlalutya utshintsho lwesigaba se-microstructure Ukusuka kwi-engile, isiphumo sokuguguleka kokutyibilika kwamanzi olwandle kwiimpawu zokuguguleka kunye nokuguguleka kwentsimbi engagqwali siyahlalutywa. Iziphumo zophando zezi zilandelayo:
(1) Izinga lokuguguleka le-316L phantsi komthwalo ophezulu lincinci kunezinga lokuguguleka phantsi komthwalo ophantsi. Uhlalutyo lwe-XRD kunye ne-metallographic lubonisa ukuba i-316L itshintsha i-martensitic ngexesha lokuguguleka kokutyibilika kwamanzi olwandle, kwaye ukusebenza kwayo kakuhle kumalunga ne-60% nangaphezulu; Xa kuthelekiswa amazinga okuguqulwa kwe-martensite phantsi kweemeko ezimbini zamanzi olwandle, kwafunyaniswa ukuba ukugqwala kwamanzi olwandle kuyayithintela inguqu ye-martensite.
(2) Iindlela zokuskena i-potentiodynamic polarization kunye neendlela ze-electrochemical impedance zisetyenzisiwe ukufunda impembelelo yotshintsho lwe-316L microstructure kwindlela yokuziphatha kwe-corrosion. Iziphumo zibonise ukuba utshintsho lwesigaba se-martensitic luchaphazele iimpawu kunye nokuzinza kwefilimu engasebenziyo kumphezulu wentsimbi engagqwali, nto leyo ekhokelela ekugqwaleni kwentsimbi engagqwali. Ukumelana nokugqwala kubuthathaka; uhlalutyo lwe-electrochemical impedance (EIS) nalo lufikelele kwisigqibo esifanayo, kwaye i-martensite evelisiweyo kunye ne-austenite engaguqukiyo zenza i-microscopic electrical coupling, nto leyo etshintsha indlela esebenza ngayo i-electrochemical yentsimbi engagqwali.
(3) Ukulahleka kwezinto eziphathekayoIntsimbi engagqwaliyo engama-316Lphantsi kwamanzi olwandle kuquka ukungqubana okucocekileyo kunye nokulahleka kwezinto zokuguguleka (W0), isiphumo sokuguguleka kokuguguleka (S') kunye nesiphumo sokuguguleka kokuguguleka (S'), ngelixa utshintsho lwesigaba se-martensitic luchaphazela ubudlelwane phakathi kokulahleka kwezinto zenxalenye nganye buchazwe.
(4) Ukugqwala kunye nokonakala kwe2205Intsimbi yesigaba esibini phantsi kweemeko ezimbini zamanzi olwandle ifundwe. Iziphumo zibonise ukuba: izinga lokuguguleka kwentsimbi yesigaba esibini phantsi komthwalo omkhulu yayincinci, kwaye ukuguguleka kokutyibilika kwamanzi olwandle kubangele ukuba isigaba se-σ senzeke kumphezulu wentsimbi yesigaba esibini. Utshintsho lwesakhiwo esincinci olufana nokuguquguquka, ukudilika kunye nokutshintsha kwelatisi kuphucula ukumelana nokuguguleka kwentsimbi yesigaba esibini; xa kuthelekiswa ne-316L, intsimbi yesigaba esibini ye-2205 inezinga lokuguguleka eliphantsi kunye nokumelana nokuguguleka okungcono.
(5) I-workstation ye-electrochemical yasetyenziswa ukuvavanya iipropati ze-electrochemical zomphezulu wokuguguleka wentsimbi yesigaba esibini. Emva kokuguguleka okutyibilikayo emanzini olwandle, amandla okuziguguleka2205intsimbi yesigaba esibini yehlile kwaye uxinano lwangoku lwanda; ukusuka kwindlela yovavanyo lwe-electrochemical impedance (EIS) ikwagqibe kwelokuba ixabiso lokuxhathisa lomphezulu wokuguguleka kwentsimbi ye-duplex liyancipha kwaye ukumelana nokugqwala kwamanzi olwandle kuyancipha; isigaba se-σ esiveliswa kukugqwala okutyibilikayo kwentsimbi ye-duplex ngamanzi olwandle kunciphisa izinto ze-Cr kunye ne-Mo ezijikeleze i-ferrite kunye ne-austenite, okwenza intsimbi ye-duplex ibe sesichengeni sokugqwala kwamanzi olwandle, kwaye imigodi yemigodi nayo inokwenzeka kwezi ndawo zinesiphene.
(6) Ukulahleka kwezinto eziphathekayoIntsimbi ye-duplex engu-2205Ngokuyintloko kuvela ekungqubaneni okumsulwa kunye nokulahleka kwezinto ezigugileyo, okubangela malunga ne-80% ukuya kwi-90% yelahleko iyonke. Xa kuthelekiswa nentsimbi engagqwaliyo ye-316L, ukulahleka kwezinto zenxalenye nganye yentsimbi ye-duplex kukhulu kune-316L. Incinci.
Ngamafutshane, kunokugqitywa kwelokuba intsimbi ye-2205 enezigaba ezimbini inokumelana nokugqwala okungcono kwindawo yamanzi olwandle kwaye ifanelekile ngakumbi ukusetyenziswa kwindawo yokugqwala nokuguguleka kwamanzi olwandle.
Ixesha lokuthumela: Disemba-04-2023