1. Shirye-shiryen sutura
Domin sauƙaƙe gwajin gwajin lantarki na baya, an zaɓi 30mm × 4 mm 304 bakin karfe azaman tushe.Yaren mutanen Poland da kuma cire ragowar oxide Layer da tsatsa spots a kan surface na substrate tare da sandpaper, sanya su a cikin wani beaker dauke da acetone, bi da stains a kan surface na substrate tare da bg-06c ultrasonic tsabtace na Bangjie Electronics kamfanin for 20min. da lalacewa tarkace a saman da karfe substrate da barasa da distilled ruwa, da kuma bushe su da abin hurawa.Sa'an nan, alumina (Al2O3), graphene da kuma matasan carbon nanotube (mwnt-coohsdbs) an shirya daidai da (100: 0: 0, 99.8: 0.2: 0, 99.8: 0.2: 0.2, 99.8: 0: 0.2, 99.6: 0.2: 0.2), da kuma sanya. injin niƙa (qm-3sp2 na masana'antar kayan aikin Nanjing NANDA) don niƙa da hadawa.An saita saurin jujjuyawar ƙwallon ƙwallon zuwa 220 R/min, kuma an juya ƙwallon ƙwallon zuwa
Bayan an gama niƙa ƙwallon, sai a saita saurin jujjuyawar tankin milling ɗin ya zama 1/2 a madadin haka bayan an gama niƙa ƙwallon, sannan sai a saita saurin jujjuyawar tankin ɗin ya zama 1/2 a madadin bayan an gama wasan ƙwallon.Jimlar yumbu mai niƙa da ɗaure ana haɗe su daidai gwargwadon yawan juzu'in 1.0 ∶ 0.8.A ƙarshe, an sami suturar yumbu mai mannewa ta hanyar warkewa.
2. Gwajin lalata
A cikin wannan binciken, gwajin lalata electrochemical ya ɗauki Shanghai Chenhua chi660e electrochemical workstation, kuma gwajin ya ɗauki tsarin gwajin lantarki guda uku.Wutar lantarki ta platinum ita ce ƙarfin lantarki, azurfar chloride na azurfa ita ce wutar lantarki, kuma samfurin mai rufi shine lantarki mai aiki, tare da ingantaccen fili na 1cm2.Haɗa na'ura mai mahimmanci, lantarki mai aiki da lantarki mai mahimmanci a cikin tantanin halitta na lantarki tare da kayan aiki, kamar yadda aka nuna a cikin Figures 1 da 2. Kafin gwajin, jiƙa samfurin a cikin electrolyte, wanda shine 3.5% NaCl bayani.
3. Tafel bincike na electrochemical lalata na coatings
Hoto 3 yana nuna madaidaicin Tafel na substrate da ba a rufe da yumbu mai rufi tare da ƙari na nano daban-daban bayan lalatawar electrochemical don 19h.Wutar lantarki ta lalata, ƙarancin lalacewa na yanzu da bayanan gwajin impedance na lantarki da aka samu daga gwajin lalata na lantarki ana nuna su a cikin Tebur 1.
Sallama
Lokacin da ƙarancin lalacewa na yanzu ya fi ƙanƙanta kuma ƙimar juriya na lalata ya fi girma, tasirin juriya na lalata ya fi kyau.Ana iya gani daga Hoto na 3 da tebur 1 cewa lokacin da lokacin lalata ya kasance 19h, matsakaicin ƙarfin lalata na matrix ɗin ƙarfe mara nauyi shine -0.680 V, kuma ƙarancin matrix na yanzu shine mafi girma, ya kai 2.890 × 10-6 A. /cm2.Lokacin da aka lullube shi da rufin yumbu mai tsabta na alumina, yawan lalacewa na yanzu ya ragu zuwa 78% kuma PE shine 22.01%.Ya nuna cewa rufin yumbura yana taka rawar kariya mafi kyau kuma zai iya inganta juriya na lalata a cikin tsaka-tsakin electrolyte.
Lokacin da aka ƙara 0.2% mwnt-cooh-sdbs ko 0.2% graphene a cikin sutura, raguwar lalacewa na yanzu ya ragu, juriya ya karu, kuma an kara inganta juriya na lalata, tare da PE na 38.48% da 40.10% bi da bi.Lokacin da aka rufe saman da 0.2% mwnt-cooh-sdbs da 0.2% graphene gauraye alumina shafi, lalata halin yanzu yana ƙara rage daga 2.890 × 10-6 A / cm2 ƙasa zuwa 1.536 × 10-6 A / cm2, matsakaicin juriya. darajar, ya karu daga 11388 Ω zuwa 28079 Ω, kuma PE na shafi na iya kaiwa 46.85%.Ya nuna cewa samfurin da aka shirya yana da juriya mai kyau na lalata, kuma tasirin haɗin gwiwar carbon nanotubes da graphene na iya inganta haɓaka juriya na yumbu mai kyau yadda ya kamata.
4. Tasirin lokacin jiƙawa akan abin rufe fuska
Don ƙarin bincika juriya na lalata na sutura, la'akari da tasirin lokacin nutsewar samfurin a cikin electrolyte akan gwajin, ana samun canjin canjin juriya na sutura huɗu a lokacin nutsewa daban-daban, kamar yadda aka nuna a cikin Hoto. 4.
Sallama
A mataki na farko na nutsewa (10 h), saboda kyakkyawan yawa da tsarin sutura, electrolyte yana da wuya a nutsewa cikin sutura.A wannan lokacin, murfin yumbu yana nuna juriya mai girma.Bayan da aka jiƙa na ɗan lokaci, juriya yana raguwa sosai, saboda tare da wucewar lokaci, electrolyte a hankali ya samar da tashar lalata ta hanyar pores da fasa a cikin sutura kuma ya shiga cikin matrix, wanda ya haifar da raguwa mai yawa a cikin juriya. shafi.
A mataki na biyu, lokacin da samfuran lalata suka karu zuwa wani adadi, an toshe yaduwar kuma an toshe rata a hankali.A lokaci guda, lokacin da electrolyte ya shiga cikin haɗin haɗin gwiwa na haɗin gwiwa Layer / matrix, kwayoyin ruwa za su amsa tare da Fe element a cikin matrix a shafi / matrix junction don samar da wani bakin ciki karfe oxide fim, wanda ya hana shigar da electrolyte cikin matrix kuma yana ƙara ƙimar juriya.Lokacin da matrix ɗin ƙarfe maras tushe ya lalace ta hanyar lantarki, yawancin hazo mai ruwan kore ana samar da shi a ƙasan na'urar lantarki.Maganin electrolytic bai canza launi ba lokacin da ake sarrafa samfurin mai rufi, wanda zai iya tabbatar da wanzuwar halayen sinadarai na sama.
Saboda ɗan gajeren lokacin jinƙai da manyan abubuwan tasiri na waje, don ƙara samun daidaitaccen canjin canji na sigogin lantarki, ana nazarin madaidaicin Tafel na 19 h da 19.5 h.The lalata halin yanzu yawa da kuma juriya samu ta zsimpwin analysis software aka nuna a cikin Table 2. Ana iya gano cewa a lokacin da soaked for 19 h, idan aka kwatanta da danda substrate, da lalata halin yanzu yawa na tsarki alumina da alumina composite shafi dauke da nano ƙari kayan. karami kuma ƙimar juriya ya fi girma.Juriya darajar yumbu shafi dauke da carbon nanotubes da shafi dauke da graphene ne kusan iri daya, yayin da shafi tsarin da carbon nanotubes da graphene hada kayan da aka muhimmanci inganta, Wannan shi ne saboda synergistic sakamako na daya-girma carbon nanotubes da biyu-girma graphene. yana inganta juriya na lalata kayan.
Tare da haɓakar lokacin nutsewa (19.5 h), juriya na ƙaƙƙarfan ƙura yana ƙaruwa, yana nuna cewa yana cikin mataki na biyu na lalata kuma an samar da fim ɗin oxide na ƙarfe a saman substrate.Hakazalika, tare da haɓakar lokaci, juriya mai tsabta na alumina yumbura yana ƙaruwa, yana nuna cewa a wannan lokacin, ko da yake akwai raguwar tasirin yumbu, electrolyte ya shiga haɗin haɗin gwiwa na shafi / matrix, kuma ya samar da fim din oxide. ta hanyar sinadarai.
Idan aka kwatanta da murfin alumina wanda ke dauke da 0.2% mwnt-cooh-sdbs, murfin alumina wanda ke dauke da 0.2% graphene da alumina da ke dauke da 0.2% mwnt-cooh-sdbs da 0.2% graphene, juriya na juriya ya ragu sosai tare da karuwar lokaci, ya ragu. da 22.94%, 25.60% da 9.61% bi da bi, yana nuna cewa electrolyte bai shiga cikin haɗin gwiwa tsakanin shafi da substrate a wannan lokaci, Wannan shi ne saboda tsarin carbon nanotubes da graphene tubalan da ƙasa shigar azzakari cikin farji na electrolyte, don haka kare. matrix.An ƙara tabbatar da tasirin haɗin gwiwa na biyun.Rufin da ke ɗauke da kayan nano guda biyu yana da mafi kyawun juriya na lalata.
Ta hanyar da Tafel kwana da canji mai lankwasa na lantarki impedance darajar, an gano cewa alumina yumbu rufi tare da graphene, carbon nanotubes da su cakuda iya inganta lalata juriya na karfe matrix, da synergistic sakamako na biyu na iya kara inganta lalata. juriya na m yumbu rufi.Don ƙarin bincika tasirin abubuwan ƙari na nano akan juriya na lalatawar rufin, an lura da yanayin haɓakar ƙwayar ƙwayar cuta bayan lalata.
Sallama
Hoto 5 (A1, A2, B1, B2) yana nuna yanayin yanayin yanayin da aka fallasa 304 bakin karfe da aka rufe da yumbu mai tsabta alumina a girma daban-daban bayan lalata.Hoto 5 (A2) yana nuna cewa saman bayan lalata ya zama m.Don dandali, manyan ramukan lalata da yawa suna bayyana a saman bayan nutsewa a cikin electrolyte, wanda ke nuna cewa juriya na lalata matrix ɗin ƙarfe ba shi da kyau kuma electrolyte yana da sauƙin shiga cikin matrix.Domin tsarki alumina yumbu shafi, kamar yadda aka nuna a cikin Hoto 5 (B2), ko da yake porous lalata tashoshi da ake generated bayan lalata, da in mun gwada da m tsarin da kyau kwarai lalata juriya na tsarki alumina yumbu rufi yadda ya kamata toshe mamayewa na electrolyte, wanda ya bayyana dalilin da ingantaccen haɓakawa na impedance na alumina yumbu rufin.
Sallama
Siffar ilimin halittar jiki na mwnt-cooh-sdbs, rufin da ke ɗauke da 0.2% graphene da suturar da ke ɗauke da 0.2% mwnt-cooh-sdbs da 0.2% graphene.Ana iya ganin cewa rufin biyu da ke ɗauke da graphene a cikin hoto na 6 (B2 da C2) suna da tsari mai faɗi, ɗaure tsakanin barbashi a cikin rufin yana da ƙarfi, kuma ɓangarorin tara suna nannade ta tam.Ko da yake saman yana lalacewa ta hanyar electrolyte, ƙananan tashoshi na pore suna samuwa.Bayan lalata, rufin rufin yana da yawa kuma akwai ƴan sifofi kaɗan.Don Hoto 6 (A1, A2), saboda halaye na mwnt-cooh-sdbs, rufin kafin lalata shine tsarin da aka rarraba daidai gwargwado.Bayan lalata, pores na ɓangaren asali ya zama kunkuntar da tsayi, kuma tashar ta zama zurfi.Idan aka kwatanta da Hoto 6 (B2, C2), tsarin yana da ƙarin lahani, wanda ya yi daidai da girman rarraba ƙimar ƙima da aka samu daga gwajin lalata electrochemical.Ya nuna cewa alumina yumbu rufi dauke da graphene, musamman cakuda graphene da carbon nanotube, yana da mafi kyau lalata juriya.Wannan shi ne saboda tsarin carbon nanotube da graphene iya yadda ya kamata toshe fasa yaduwa da kuma kare matrix.
5. Tattaunawa da taƙaitawa
Ta hanyar juriya juriya na carbon nanotubes da graphene Additives a kan alumina yumbu rufi da kuma nazarin surface microstructure na shafi, an zana wadannan ƙarshe:
(1) Lokacin da lalata lokaci ya kasance 19 h, ƙara 0.2% matasan carbon nanotube + 0.2% graphene gauraye abu alumina yumbu shafi, da lalata halin yanzu yawa daga 2.890 × 10-6 A / cm2 saukar zuwa 1.536 × 10-6 A / cm2, an ƙara ƙarfin wutar lantarki daga 11388 Ω zuwa 28079 Ω, kuma ƙarfin juriya na lalata shine mafi girma, 46.85%.Idan aka kwatanta da tsabta alumina yumbu rufi, da hadawa shafi tare da graphene da carbon nanotubes yana da mafi lalata juriya.
(2) Tare da karuwar lokacin nutsewa na electrolyte, electrolyte yana shiga cikin haɗin gwiwa na shafi / substrate don samar da fim din karfe oxide, wanda ke hana shigar da electrolyte a cikin substrate.Rashin wutar lantarki na farko yana raguwa sannan kuma yana ƙaruwa, kuma juriya na lalata na alumina yumbura mai tsabta ba shi da kyau.Tsari da haɗin kai na carbon nanotubes da graphene sun toshe shiga ƙasa na electrolyte.Lokacin da aka jiƙa don 19.5 h, ƙarancin wutar lantarki na rufin da ke dauke da kayan nano ya ragu da 22.94%, 25.60% da 9.61% bi da bi, kuma juriya na lalata yana da kyau.
6. Tasiri inji na shafi lalata juriya
Ta hanyar da Tafel kwana da canji mai lankwasa na lantarki impedance darajar, an gano cewa alumina yumbu rufi tare da graphene, carbon nanotubes da su cakuda iya inganta lalata juriya na karfe matrix, da synergistic sakamako na biyu na iya kara inganta lalata. juriya na m yumbu rufi.Don ƙarin bincika tasirin abubuwan ƙari na nano akan juriya na lalatawar rufin, an lura da yanayin haɓakar ƙwayar ƙwayar cuta bayan lalata.
Hoto 5 (A1, A2, B1, B2) yana nuna yanayin yanayin yanayin da aka fallasa 304 bakin karfe da aka rufe da yumbu mai tsabta alumina a girma daban-daban bayan lalata.Hoto 5 (A2) yana nuna cewa saman bayan lalata ya zama m.Don dandali, manyan ramukan lalata da yawa suna bayyana a saman bayan nutsewa a cikin electrolyte, wanda ke nuna cewa juriya na lalata matrix ɗin ƙarfe ba shi da kyau kuma electrolyte yana da sauƙin shiga cikin matrix.Domin tsarki alumina yumbu shafi, kamar yadda aka nuna a cikin Hoto 5 (B2), ko da yake porous lalata tashoshi da ake generated bayan lalata, da in mun gwada da m tsarin da kyau kwarai lalata juriya na tsarki alumina yumbu rufi yadda ya kamata toshe mamayewa na electrolyte, wanda ya bayyana dalilin da ingantaccen haɓakawa na impedance na alumina yumbu rufin.
Siffar ilimin halittar jiki na mwnt-cooh-sdbs, rufin da ke ɗauke da 0.2% graphene da suturar da ke ɗauke da 0.2% mwnt-cooh-sdbs da 0.2% graphene.Ana iya ganin cewa rufin biyu da ke ɗauke da graphene a cikin hoto na 6 (B2 da C2) suna da tsari mai faɗi, ɗaure tsakanin barbashi a cikin rufin yana da ƙarfi, kuma ɓangarorin tara suna nannade ta tam.Ko da yake saman yana lalacewa ta hanyar electrolyte, ƙananan tashoshi na pore suna samuwa.Bayan lalata, rufin rufin yana da yawa kuma akwai ƴan sifofi kaɗan.Don Hoto 6 (A1, A2), saboda halaye na mwnt-cooh-sdbs, rufin kafin lalata shine tsarin da aka rarraba daidai gwargwado.Bayan lalata, pores na ɓangaren asali ya zama kunkuntar da tsayi, kuma tashar ta zama zurfi.Idan aka kwatanta da Hoto 6 (B2, C2), tsarin yana da ƙarin lahani, wanda ya yi daidai da girman rarraba ƙimar ƙima da aka samu daga gwajin lalata electrochemical.Ya nuna cewa alumina yumbu rufi dauke da graphene, musamman cakuda graphene da carbon nanotube, yana da mafi kyau lalata juriya.Wannan shi ne saboda tsarin carbon nanotube da graphene iya yadda ya kamata toshe fasa yaduwa da kuma kare matrix.
7. Tattaunawa da taƙaitawa
Ta hanyar juriya juriya na carbon nanotubes da graphene Additives a kan alumina yumbu rufi da kuma nazarin surface microstructure na shafi, an zana wadannan ƙarshe:
(1) Lokacin da lalata lokaci ya kasance 19 h, ƙara 0.2% matasan carbon nanotube + 0.2% graphene gauraye abu alumina yumbu shafi, da lalata halin yanzu yawa daga 2.890 × 10-6 A / cm2 saukar zuwa 1.536 × 10-6 A / cm2, an ƙara ƙarfin wutar lantarki daga 11388 Ω zuwa 28079 Ω, kuma ƙarfin juriya na lalata shine mafi girma, 46.85%.Idan aka kwatanta da tsabta alumina yumbu rufi, da hadawa shafi tare da graphene da carbon nanotubes yana da mafi lalata juriya.
(2) Tare da karuwar lokacin nutsewa na electrolyte, electrolyte yana shiga cikin haɗin gwiwa na shafi / substrate don samar da fim din karfe oxide, wanda ke hana shigar da electrolyte a cikin substrate.Rashin wutar lantarki na farko yana raguwa sannan kuma yana ƙaruwa, kuma juriya na lalata na alumina yumbura mai tsabta ba shi da kyau.Tsari da haɗin kai na carbon nanotubes da graphene sun toshe shiga ƙasa na electrolyte.Lokacin da aka jiƙa don 19.5 h, ƙarancin wutar lantarki na rufin da ke dauke da kayan nano ya ragu da 22.94%, 25.60% da 9.61% bi da bi, kuma juriya na lalata yana da kyau.
(3) Saboda halaye na carbon nanotubes, da shafi kara da carbon nanotubes kadai yana da uniformly rarraba porous tsarin kafin lalata.Bayan lalata, pores na ɓangaren asali ya zama kunkuntar da tsayi, kuma tashoshi sun zama zurfi.Rubutun da ke dauke da graphene yana da tsarin lebur kafin lalata, haɗuwa tsakanin barbashi a cikin rufin yana kusa, kuma abubuwan da ke tattare da su an nannade su tam ta m.Ko da yake saman yana lalacewa ta hanyar electrolyte bayan lalata, akwai ƙananan tashoshi na pore kuma tsarin yana da yawa.Tsarin carbon nanotubes da graphene na iya yadda ya kamata toshe yaduwar fasa da kuma kare matrix.
Lokacin aikawa: Maris-09-2022