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, cire lalacewa tarkace a kan surface na karfe substrate tare da barasa da distilled su da busassun ruwa, da busasshen ruwa. Sa'an nan, alumina (Al2O3), graphene da hybrid carbon nanotube (mwnt-coohsdbs) aka shirya daidai gwargwado (100: 0: 0, 99.8: 0.2: 0, 99.8: 0.2: 0, 99.8: 0: 0.2, 99.6: 0.2: 0.2) na NAnji ball, da kuma saka (2 mill kayan aiki na NAnji ball). masana'anta) don niƙa ball 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 na lantarki 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 yawan 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 3 da tebur 1 cewa lokacin da lokacin lalata ya kasance 19h, matsakaicin lalata ƙarfin lantarki na matrix ɗin ƙarfe mara kyau shine -0.680 V, kuma girman lalata na yanzu shine mafi girma, yana kaiwa 2.890 × 10-6 A / cm2 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 surface aka mai rufi da 0.2% mwnt-cooh-sdbs da 0.2% graphene gauraye alumina shafi, da lalata halin yanzu da aka kara rage daga 2.890 × 10-6 A / cm2 saukar zuwa 1.536 × 10-6 A / cm2, matsakaicin juriya darajar, ya karu daga 113828 PE shafi, da kuma 7 Ω shafi. ya canza zuwa +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 haɓakar juriya na yumbu mai kyau yadda ya kamata.
4. Tasirin lokacin jiƙawa akan abin rufe fuska
Don ci gaba da bincika juriya na lalata na rufi, 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 yin 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 na sutura.
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, a lokacin da electrolyte shiga cikin bonding dubawa na bonding kasa Layer / matrix, da ruwa kwayoyin za su amsa tare da Fe kashi a cikin matrix a shafi / matrix junction don samar da bakin ciki karfe oxide fim, wanda hana shigar azzakari cikin farji na electrolyte cikin matrix da kuma ƙara da juriya darajar. 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. Ana nuna ƙarancin lalacewa na yanzu da juriya da aka samu ta hanyar software na bincike na zsimpwin a cikin Table 2. Ana iya gano cewa lokacin da aka jiƙa don 19 h, idan aka kwatanta da ma'auni maras kyau, lalata halin yanzu mai yawa na alumina mai tsabta da alumina composite shafi dauke da kayan ƙari na nano sun fi karami kuma ƙimar juriya ya fi girma. A juriya darajar yumbu rufi dauke da carbon nanotubes da shafi dauke da graphene ne kusan iri daya, yayin da shafi tsarin da carbon nanotubes da graphene composite kayan ne muhimmanci inganta, Wannan shi ne saboda synergistic sakamako na daya-girma carbon nanotubes da biyu-girma graphene inganta lalata juriya na abu.
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 yumbura, electrolyte ya shiga cikin haɗin haɗin gwiwa na shafi / matrix, kuma ya samar da fim din oxide ta hanyar halayen sinadaran.
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 mai juriya ya ragu sosai tare da karuwar lokaci, rage ta 0.2% 22.9.9. bi da bi, 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 shafi tare da graphene, carbon nanotubes da su cakuda iya inganta lalata juriya na karfe matrix, da synergistic sakamako na biyu iya kara inganta lalata juriya na m yumbu shafi. 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 aka 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 m inganta impedance na alumina yumbu rufi.
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 biyun 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 rarrabawar 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 na iya yadda ya kamata ya toshe yaduwar fasa 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 ya karu daga 2.890 × 10-6 A / cm2 saukar zuwa 1.536 × 10-6 A / cm2, da lantarki impedance 8 800 1.9 zuwa 8 1000 1.5 Ω1. Ω, kuma ingantaccen 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 shafi tare da graphene, carbon nanotubes da su cakuda iya inganta lalata juriya na karfe matrix, da synergistic sakamako na biyu iya kara inganta lalata juriya na m yumbu shafi. 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 aka 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 m inganta impedance na alumina yumbu rufi.
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 biyun 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 rarrabawar 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 na iya yadda ya kamata ya toshe yaduwar fasa 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 ya karu daga 2.890 × 10-6 A / cm2 saukar zuwa 1.536 × 10-6 A / cm2, da lantarki impedance 8 800 1.9 zuwa 8 1000 1.5 Ω1. Ω, kuma ingantaccen 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