1. Ukulungiselela ukuhlanganisa
Ukuze kulungiswe ukuhlolwa kwesikhathi kwe-electrochemical yakamuva, kukhethwe i-30mm 4 mm 304 insimbi engenasici njengezisekelo. Kipolishi futhi ususe ungqimba lwe-oxide osalayo kanye namabala okugqwala ebusweni be-substrate nge-sandraper, bawafake ku-beaker equkethe i-acetone, bahlanze ihlanzekile ye-BG-06C Ultrasonic Cleaner ye-Bangjie Electronics Company ye-20min, Susa Umfutho ogqoke ebusweni be-wetal substrate notshwala namanzi ancishisiwe, bese uyoma nge-blower. Ngemuva kwalokho, i-alumina (al2o3), i-graphene kanye ne-hybrid carbon nanotube (MWNT-COOHSDBS) yalungiswa ngokulingana (100: 0: 0, 99.8: 0.2: 0, 0,2: 0,2, 0, 0.2, 09.6: 0.2: 0.2), bese ifakwa ku I-ball mill (QM-3SP2 yefektri yensimbi ye-nanjing NANDA) ngebhola lokugaya futhi ukuxuba. Ijubane elijikelezayo le-Ball Mill lahlelwa ku-220 R / min, futhi i-Ball Mill yaphendukela
Ngemuva kokugaya kwebhola, setha ijubane lokujikeleza kwethangi lokugaya ibhola ukuze ube ngu-1/2 ngokuhlukile ngemuva kokuqedwa kwebhola, bese usetha ijubane lokujikeleza kwebhola lebhola libe ngu-1/2 ngokuhlukile ngemuva kokuqedwa kwebhola. Ibhola elihlanganiswe ne-ceramic aggregate futhi i-binder ixubene ngokulinganayo ngokwengxenye enkulu ye-1.0: 0.8. Ekugcineni, ukuhlanganiswa kwe-ceramic ceramic kwatholakala ngenqubo yokulapha.
2. Ukuhlolwa kokugqwala
Kulolu cwaningo, ukuhlolwa kwe-electrochemical corrosion amukele iShanghai Chenhua Chi660e i-electrochemical WorkStation, kanye nokuhlolwa kwamukela uhlelo olungama-elekthrodi ahlola ama-electrode. The platinum electrode is the auxiliary electrode, the silver silver chloride electrode is the reference electrode, and the coated sample is the working electrode, with an effective exposure area of 1cm2. Xhuma i-electrode yesethenjwa, i-electrode esebenza nge-electrode ne-electrode e-auxilic ngensimbi, njengoba kukhonjisiwe kwizibalo 1 no-2. Ngaphambi kokuhlolwa, faka isampula ku-electrolyte, okuyi-3.5% NACL Solution.
3. Ukuhlaziywa kweTafel kokugqwala kwe-electrochemical kwezimbozo
I-Fig. 3 ikhombisa ijika le-tafel le-substrate elingaxhunyiwe ku-substrate kanye ne-ceramic coating ehlanganisiwe nezithasiselo ezahlukahlukene ze-nano ngemuva kokugqwala kwe-electrochemical kwe-19h. I-corrosion voltage, ukugcwala kwamanje, imininingwane yokuhlolwa kukagesi kokuvimbela ukubonwa kusuka ku-Electrochemical Tornision Test kukhonjiswa etafuleni 1.
Beka phansi
Lapho ubukhulu bamanje bokugqwala buncane futhi ukusebenza kahle kokugqwala kuphakeme, umphumela wokumelana nokugqwala kokuhlanganiswa kungcono. Kungabonakala kusuka kuMdwebo 3 neThebula 1 ukuthi lapho isikhathi sokugqwala singu-19h, i-voltage ephezulu yokugqwala ye-matrix engenalutho ye-matrix ingena -0.680 v, kanye nokuqina kwamanje kwe-matrix futhi kufinyelela ku-2.890 × 10-6 a / cm2. Lapho ehlanganiswe nge-Alumina Ceramic Coatic emsulwa, incithakalo yamanje yokugqwala yehle ku-78% no-pe kwakungu-22.01%. Kubonisa ukuthi ukuhlanganiswa kwe-ceramic kudlala indima engcono yokuzivikela futhi kungathuthukisa ukumelana nokugqwala kokuhlanganiswa ku-electrolyte ye-neperal.
Lapho u-0.2% MWNT-COOH-SDBS noma i-0.2% ye-graphene yengezwe kuma-coating, ukuqina kwamanje kwehle, ukumelana kwandisiwe, futhi ukumelana nokugqwala kwathuthukiswa okwengeziwe, kanye ne-PE ka-38.48% no-40.10% ngokulandelana. Lapho ingaphezulu lihlanganiswe nge-0.2% MWNT-COOH-COOH-COOH-SDBS kanye ne-0.2% ye-graphene exubekile i-Alumina Coatina Coatina, i-Cororiosion yamanje iyehliswa kusuka ku-2.890 × 10-6 a / cm2 phansi kuya ku-1.536 × 10-6 a / cm2, ukumelana okuphezulu Inani, lenyuke lisuka ku-11388 ω to 28079 ω, kanye ne-PE yokuhlanganisa imali ingafinyelela ku-46.85%. Kubonisa ukuthi umkhiqizo olungiselelwe olungiselelwe unokumelana kahle kokugqwala, kanye nomphumela we-synergistic ye-carbon nanotubes kanye ne-graphene kungathuthukisa ngempumelelo ukumelana nokugqwala kwe-ceramic coating.
I-4. Umphumela wesikhathi sokulungiswa kokuvinjwa kwe-coation
Ukuze uphinde uhlole ukumelana nokugqwala kokugoqwa, ukubheka ithonya lesikhathi sokuntywila kwesampula ku-electrolyte esivivinyweni, izinguquko zokuphikiswa kwezingubo ezine endaweni yokuntywiliselwa ehlukile zitholakala, njengoba kukhonjisiwe kuMfanekiso 4.
Beka phansi
Esigabeni sokuqala sokucwiliswa (10 h), ngenxa yobunzima obuhle nokwakheka kwe-coati, i-electrolyte kunzima ukucwilisa imali ekhonjiwe. Ngalesi sikhathi, ukuhlanganiswa kwe-ceramic kukhombisa ukumelana okuphezulu. Ngemuva kokufaka isikhathi esithile, ukumelana kwehla kakhulu, ngoba ngokuhamba kwesikhathi, kancane kancane i-electrolyte yakha isiteshi sokugqwala ngokusebenzisa ama-pores kanye nemifantu ku-matrix futhi ingena ekunciphiseni okukhulu ekumelaneni kwe ukunamathela.
Esigabeni sesibili, lapho imikhiqizo yokuhlanza inyuka inani elithile, ukuguquguquka kuvinjelwe futhi igebe livinjelwa kancane kancane. Ngasikhathi sinye, lapho i-electrolyte ingena ekubonisweni kwesibopho se-bonding searr / matrix, ama-molecule amanzi azosabela nge-FE into ku-matrix e-coatix / matrix punction ukukhiqiza i-metal oxide ifilimu, evimbela i ukungena kwe-electrolyte ku-matrix futhi kwandisa inani lokumelana. Lapho i-matrix yensimbi engenalutho igcwala i-electrochemically, iningi lemvula eluhlaza okwesibhakabhaka ikhiqizwa ezansi kwe-electrolyte. Isixazululo se-electrolytic asishintsha umbala lapho eclectrolyzing isampula ehlanganisiwe, engafakazela ubukhona bokuphendula kwamakhemikhali ngenhla.
Ngenxa yesikhathi esifushane sokulungiselela kanye nezinto ezinkulu zangaphandle zethonya, ukuze uphinde uphinde uthole ubudlelwane obunoshintsho olunembile lwamapharamitha we-electrochemical, ama-tafel curve we-19 h no-19,5 h ayahlaziywa. Ubuningi bamanje bokugqwala kanye nokumelana okutholwe yi-ZSIMMWIn Ukuhlaziywa Kwesoftware kukhonjiswe kuThebula 2. Kungatholwa ukuthi uma ifakwe ngaphakathi kwe-19 h, ukuqhathanisa nokuhlangana kwama-alumina compos aqukethe izinto ezingezansi ze-NANO Inani elincane futhi nenani lokumelana likhulu. Inani lokumelana no-Ceramic Coang aqukethe ama-nanotubes e-carbon kanye ne-coating equkethe i-graphene kufana, ngenkathi ukwakheka kwe-coarbon nanotubes kuthuthukiswa kakhulu, lokhu kungenxa yokuthi i-synergistic kuthuthukisa ukumelana nokugqwala kwezinto ezibonakalayo.
Ngokwanda kwesikhathi sokuntywiliselwa (19,5 h), ukumelana kokunyuka kwe-substrate engenalutho, okukhombisa ukuthi kusesigabeni sesibili sokugqwala kanye nefilimu yensimbi oxide kukhiqizwa ebusweni be-substrate. Ngokufanayo, ngokunyuka kwesikhathi, ukumelana kwe-alumina ceramic coalic nakho kuyanda, kukhombisa ukuthi ngalesi sikhathi, yize kunomthelela we-ceramic coatics, i-electrolyte ingene kwi-moning coap of coating / matrix, futhi ikhiqize ifilimu elibophayo ngokuphendula kwamakhemikhali.
Qhathanisa ne-alumina coating equkethe u-0.2% mwnt-cooh-cooh, i-alumina coating equkethe i-grafina engu-0.2% kanye ne-alumina ye-alumina equkethe u-0.2% we-grafis kanye ne-graphias ye-0 ngo-22.94%, 25,60% no-9.61% ngokulandelana, okukhombisa ukuthi i-electrolyte ayizange ingene ekuhlanganiseni phakathi kwe-coating kanye ne-substrate ngalesi sikhathi, lokhu kungenxa yokuthi ukwakheka kwe-carbon nanotubes kanye ne-graphene kuvimba ukungena phansi kwe-electrolyte, ngaleyo ndlela kuvikela i-matrix. Umphumela we-synergistic walokhu okubili uqinisekiswa futhi. I-coating equkethe izinto ezimbili ze-nano inokuphikiswa okungcono kokugqwala.
Ngokusebenzisa ijika le-tafel kanye ne-shintsha ijika lenani lokuvimbela ugesi, litholakala ukuthi i-alumina ceramic coaging ene-graphene, i-carbon nanotubes kanye nenhlanganisela yazo kungathuthukisa ukumelana kwe-matrix yensimbi, kanye nomphumela we-synernergistic walaba bobabili kungathuthukisa ukugqwala ukumelana nokunamathela okunama-adhesic ceramic. Ukuze uphinde uhlole umphumela we-nano izengezo ekumelaneni nokugqwala kokugqwala kwe-coation, i-morphology encane ye-morphology yokuhlanganiswa ngemuva kokubhujiswa kwaqashelwa.
Beka phansi
Umdwebo 5 (A1, A2, B1, B2) ukhombisa i-morphology ye-morphology yensimbi eveziwe engama-304 insimbi engenacala futhi ihlanganiswe ne-alumina ceramics emsulwa ngokukhulisa okuhlukile ngemuva kokukhulisa. Umdwebo 5 (A2) ukhombisa ukuthi ingaphezulu ngemuva kokugqwala kuba nzima. Ukuze uthole i-substrate engenalutho, kuvela imigodi eminingana emikhulu ebusweni ngemuva kokucwiliswa e-electrolyte, okubonisa ukuthi ukumelana nokugqwala kwe-matrix yensimbi engenamsebenzi kulungile futhi i-electrolyte kulula ukungena kwi-matrix. Ukuze uthole ukuhlanganiswa okumsulwa kwe-alumina ceramic, njengoba kukhonjisiwe kuMfanekiso 5 (B2), yize kukhiqizwa iziteshi ze-Porous zokugqwala ngemuva kokugqwala, ukwakheka okuhle kokugqwala nokuphikiswa okumsulwa kwe-alumina ceramic coative ngempumelelo ukuvimbela ukuhlaselwa kwe-electrolyte, echaza isizathu ukuthuthuka okusebenzayo kokuphazamiseka kwe-alumina ceramic coatic.
Beka phansi
I-GRORPHOOYT ye-MWNT-COOH-SDBS, ama-Coatings aqukethe i-0.2% graphene kanye izimbobo eziqukethe u-0.2% MWNT-COOH-COOH-COOH-SDB kanye ne-0.2% graphene. Kungabonakala ukuthi izimbobo ezimbili eziqukethe i-graphene in Umdwebo 6 (B2 ne-C2) zinesakhiwo esiyisicaba, ukubopha phakathi kwezinhlayiya ku-coative kuqinile, futhi izinhlayiya ezihlanganisiwe zisongwe ngokuqinile ngokunamathela. Yize ingaphezulu likhishwe yi-electrolyte, kwakhiwa iziteshi ezimbalwa ze-pore. Ngemuva kokugqwala, indawo ehlanganayo ayiminyene futhi kunezinhlaka ezimbalwa zokukhubazeka. Ngomfanekiso 6 (A1, A2), ngenxa yezimpawu zeMWNT-COOH-SDBS, ukuhlanganiswa ngaphambi kokugqwala kusatshalaliswa ngendlela efanayo. Ngemuva kokugqwala, ama-pores engxenye yokuqala eba mincane futhi ende, futhi isiteshi sijula. Uma kuqhathaniswa nesibalo 6 (B2, C2), isakhiwo sinezinkinga eziningi, ezihambisana nokusatshalaliswa kosayizi wenani lokuvinjwa kwe-coating okutholwe ku-Electrochemical Trorision Test. Kubonisa ukuthi i-Alumina Ceramic Coaging equkethe i-graphene, ikakhulukazi ingxube ye-graphene ne-carbon nanotube, inokumelana kahle nokugqwala okungcono kakhulu. Lokhu kungenxa yokuthi ukwakheka kwe-carbon nanotube kanye ne-graphene kungavimba ngempumelelo ukuqhekeka kokuqhekeka futhi kuvikele i-matrix.
5. Ingxoxo nokufingqa
Ngokuhlolwa kokuphikiswa kokuphika kwama-carbon nanotubes kanye ne-graphene angengeli kuma-alumina ceramic coating kanye nokuhlaziywa kwendawo engaphezulu kwe-coating, iziphetho ezilandelayo zidonswa:
. cm2, ukungcola ngogesi kukhuphuke kusuka ngo-11388 ω kuya ku-28079 ω, kanye Ukusebenza kahle kokugqwala kukhulu kakhulu, 46.85%. Uma kuqhathaniswa nokuhlanganiswa kwe-alumina ceramic okuhlanzekile, ukuhlanganiswa okuhlanganisiwe okune-graphene kanye ne-carbon nanotubes kunokumelana okungcono kokugqwala.
. Ukuphazamiseka kukagesi kuqala kuncipha bese kukhula, futhi ukumelana nokugqwala kwe-alumina ceramic coatic ampofu. Isakhiwo kanye ne-Synergy of Carbon Nanotubes kanye ne-graphene kuvinjelwe ukungena phansi kwe-electrolyte. Lapho ifakwe ngo-19,5 h, ukungcola ngogesi kwe-coating equkethe izinto ze-nano kwancipha ngo-22.94%, 25,60% no-9.61% ngokulandelana, futhi ukumelana nokugqwala kwe-coating kwakukuhle.
I-6
Ngokusebenzisa ijika le-tafel kanye ne-shintsha ijika lenani lokuvimbela ugesi, litholakala ukuthi i-alumina ceramic coaging ene-graphene, i-carbon nanotubes kanye nenhlanganisela yazo kungathuthukisa ukumelana kwe-matrix yensimbi, kanye nomphumela we-synernergistic walaba bobabili kungathuthukisa ukugqwala ukumelana nokunamathela okunama-adhesic ceramic. Ukuze uphinde uhlole umphumela we-nano izengezo ekumelaneni nokugqwala kokugqwala kwe-coation, i-morphology encane ye-morphology yokuhlanganiswa ngemuva kokubhujiswa kwaqashelwa.
Umdwebo 5 (A1, A2, B1, B2) ukhombisa i-morphology ye-morphology yensimbi eveziwe engama-304 insimbi engenacala futhi ihlanganiswe ne-alumina ceramics emsulwa ngokukhulisa okuhlukile ngemuva kokukhulisa. Umdwebo 5 (A2) ukhombisa ukuthi ingaphezulu ngemuva kokugqwala kuba nzima. Ukuze uthole i-substrate engenalutho, kuvela imigodi eminingana emikhulu ebusweni ngemuva kokucwiliswa e-electrolyte, okubonisa ukuthi ukumelana nokugqwala kwe-matrix yensimbi engenamsebenzi kulungile futhi i-electrolyte kulula ukungena kwi-matrix. Ukuze uthole ukuhlanganiswa okumsulwa kwe-alumina ceramic, njengoba kukhonjisiwe kuMfanekiso 5 (B2), yize kukhiqizwa iziteshi ze-Porous zokugqwala ngemuva kokugqwala, ukwakheka okuhle kokugqwala nokuphikiswa okumsulwa kwe-alumina ceramic coative ngempumelelo ukuvimbela ukuhlaselwa kwe-electrolyte, echaza isizathu ukuthuthuka okusebenzayo kokuphazamiseka kwe-alumina ceramic coatic.
I-GRORPHOOYT ye-MWNT-COOH-SDBS, ama-Coatings aqukethe i-0.2% graphene kanye izimbobo eziqukethe u-0.2% MWNT-COOH-COOH-COOH-SDB kanye ne-0.2% graphene. Kungabonakala ukuthi izimbobo ezimbili eziqukethe i-graphene in Umdwebo 6 (B2 ne-C2) zinesakhiwo esiyisicaba, ukubopha phakathi kwezinhlayiya ku-coative kuqinile, futhi izinhlayiya ezihlanganisiwe zisongwe ngokuqinile ngokunamathela. Yize ingaphezulu likhishwe yi-electrolyte, kwakhiwa iziteshi ezimbalwa ze-pore. Ngemuva kokugqwala, indawo ehlanganayo ayiminyene futhi kunezinhlaka ezimbalwa zokukhubazeka. Ngomfanekiso 6 (A1, A2), ngenxa yezimpawu zeMWNT-COOH-SDBS, ukuhlanganiswa ngaphambi kokugqwala kusatshalaliswa ngendlela efanayo. Ngemuva kokugqwala, ama-pores engxenye yokuqala eba mincane futhi ende, futhi isiteshi sijula. Uma kuqhathaniswa nesibalo 6 (B2, C2), isakhiwo sinezinkinga eziningi, ezihambisana nokusatshalaliswa kosayizi wenani lokuvinjwa kwe-coating okutholwe ku-Electrochemical Trorision Test. Kubonisa ukuthi i-Alumina Ceramic Coaging equkethe i-graphene, ikakhulukazi ingxube ye-graphene ne-carbon nanotube, inokumelana kahle nokugqwala okungcono kakhulu. Lokhu kungenxa yokuthi ukwakheka kwe-carbon nanotube kanye ne-graphene kungavimba ngempumelelo ukuqhekeka kokuqhekeka futhi kuvikele i-matrix.
7. Ingxoxo nokufingqa
Ngokuhlolwa kokuphikiswa kokuphika kwama-carbon nanotubes kanye ne-graphene angengeli kuma-alumina ceramic coating kanye nokuhlaziywa kwendawo engaphezulu kwe-coating, iziphetho ezilandelayo zidonswa:
. cm2, ukungcola ngogesi kukhuphuke kusuka ngo-11388 ω kuya ku-28079 ω, kanye Ukusebenza kahle kokugqwala kukhulu kakhulu, 46.85%. Uma kuqhathaniswa nokuhlanganiswa kwe-alumina ceramic okuhlanzekile, ukuhlanganiswa okuhlanganisiwe okune-graphene kanye ne-carbon nanotubes kunokumelana okungcono kokugqwala.
. Ukuphazamiseka kukagesi kuqala kuncipha bese kukhula, futhi ukumelana nokugqwala kwe-alumina ceramic coatic ampofu. Isakhiwo kanye ne-Synergy of Carbon Nanotubes kanye ne-graphene kuvinjelwe ukungena phansi kwe-electrolyte. Lapho ifakwe ngo-19,5 h, ukungcola ngogesi kwe-coating equkethe izinto ze-nano kwancipha ngo-22.94%, 25,60% no-9.61% ngokulandelana, futhi ukumelana nokugqwala kwe-coating kwakukuhle.
. Ngemuva kokugqwala, ama-pores engxenye yokuqala eba mincane futhi ende, futhi iziteshi zijula. I-coating equkethe i-graphene inesakhiwo esiyisicaba ngaphambi kokugqwala, inhlanganisela phakathi kwezinhlayiya ku-coating isondele, futhi izinhlayiya ezihlanganisiwe zigoqiwe ngokuqinile. Yize ingaphezulu likhishwe yi-electrolyte ngemuva kokugqwala, kuneziteshi ezimbalwa ezi-pores kanye nesakhiwo sisakhula. Ukwakheka kwe-carbon nanotubes kanye ne-graphene kungavimba ngempumelelo ukusakazeka kokuqhekeka futhi kuvikele i-matrix.
Isikhathi Sokuthumela: Mar-09-2022