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Ubushakashatsi ku kurwanya ruswa ya graphene / carbone nanotube ishimangira alumina ceramic coating

1. Gutegura
Kugirango byorohereze ikizamini cyamashanyarazi nyuma, 30mm yatoranijwe × 4 mm 304 ibyuma bitagira umwanda nkibishingiro.Igipolonye hanyuma ukureho igisigisigi cya oxyde gisigaye hamwe nuduce twa rust hejuru yubutaka hamwe na sandpaper, ubishyire muri beaker irimo acetone, kuvura ikizinga hejuru yubutaka hamwe na bg-06c ultrasonic isukura uruganda rukora ibikoresho bya elegitoroniki ya Bangjie kuri 20min, ukureho kwambara imyanda hejuru yicyuma cya substrate hamwe n'inzoga n'amazi yatoboye, hanyuma ukumisha hamwe na blower.Hanyuma, alumina (Al2O3), graphene na Hybrid carbone nanotube (mwnt-coohsdbs) byateguwe bikurikije (100: 0: 0, 99.8: 0.2: 0, 99.8: 0: 0.2, 99.6: 0.2: 0.2), hanyuma bishyiramo. urusyo rw'umupira (qm-3sp2 y'uruganda rwa Nanjing NANDA) rwo gusya no kuvanga.Umuvuduko wo kuzenguruka urusyo rwumupira washyizwe kuri 220 R / min, hanyuma urusyo rwumupira ruhinduka

Nyuma yo gusya umupira, shiraho umuvuduko wo kuzunguruka wikigega cyo gusya umupira kugirango ube 1/2 mugihe kimwe nyuma yo gusya umupira urangiye, hanyuma ushyireho umuvuduko wo kuzunguruka wikigega cyo gusya umupira kuba 1/2 muburyo bumwe nyuma yo gusya umupira.Umupira wasya ceramic agregate hamwe na binder bivangwa neza ukurikije igice kinini cya 1.0 ∶ 0.8.Hanyuma, igifuniko ceramic ceramic cyabonetse mugukiza inzira.

Ikizamini cya ruswa
Muri ubu bushakashatsi, ikizamini cya electrochemical corrosion cyakoresheje Shanghai Chenhua chi660e ahakorerwa amashanyarazi, kandi ikizamini gikoresha sisitemu eshatu za electrode.Electrode ya platine ni electrode ifasha, ifeza ya silver ya chloride ya electrode ni electrode yerekana, naho icyitegererezo cyashizweho ni electrode ikora, hamwe nubuso bugaragara bwa 1cm2.Huza electrode yerekana, electrode ikora hamwe na electrode ifasha muri selile ya electrolytique hamwe nigikoresho, nkuko bigaragara ku gishushanyo cya 1 nicya 2. Mbere yikizamini, shyira icyitegererezo muri electrolyte, ni igisubizo cya NaCl 3.5%.

3. Tafel isesengura ryamashanyarazi yangirika yimyenda
Igishushanyo cya 3 cyerekana umurongo wa Tafel wa substrate idashyizwe hamwe na ceramic ceramic yubatswe hamwe ninyongeramusaruro zitandukanye nano nyuma yo kwangirika kwamashanyarazi kuri 19h.Umuvuduko wa ruswa, ubukana bwa ruswa hamwe namakuru yikizamini cyo kubuza amashanyarazi yakuwe mu kizamini cya electrochemic ruswa yerekanwa mu mbonerahamwe ya 1.

Tanga
Iyo ubwinshi bwangirika bwangirika ari buto kandi uburyo bwo kurwanya ruswa bukaba buri hejuru, ingaruka zo kurwanya ruswa zishobora kuba nziza.Birashobora kugaragara ku gishushanyo cya 3 no ku mbonerahamwe ya 1 ko iyo igihe cyo kwangirika ari 19h, imbaraga ntarengwa zo kwangirika kwa materique yambaye ubusa ni -0.680 V, naho ubwinshi bwangirika bwa matrix nabwo ni bunini, bugera kuri 2.890 × 10-6 A / cm2。 Iyo itwikiriwe neza na alumina ceramic ceramic, ubwinshi bwangirika bwaragabanutse kugera kuri 78% naho PE yari 22.01%.Irerekana ko igipfundikizo ceramic gifite uruhare runini rwo kurinda kandi gishobora kunoza kwangirika kwangirika kwingingo ya electrolyte idafite aho ibogamiye.

Iyo 0.2% mwnt-cooh-sdbs cyangwa 0.2% graphene yongewe kuri coating, ubucucike bwa ruswa bwagabanutse, ubukana bwiyongera, kandi kurwanya ruswa kwangirika kwarushijeho kunozwa, hamwe na PE ya 38.48% na 40.10%.Iyo ubuso butwikiriwe na 0.2% mwnt-cooh-sdbs na 0.2% ya graphene ivanze ya alumina, amashanyarazi ashobora kugabanuka kuva kuri 2.890 × 10-6 A / cm2 kugeza kuri 1.536 × 10-6 A / cm2, kurwanya cyane agaciro, yiyongereye kuva 11388 Ω igera kuri 28079 Ω, naho PE yo gutwikira irashobora kugera kuri 46,85%.Irerekana ko ibicuruzwa byateguwe bifite intego nziza yo kurwanya ruswa, kandi ingaruka ziterwa na carbone nanotube na graphene zirashobora kunoza neza kwangirika kwangirika kwububiko bwa ceramic.

4. Ingaruka zo gushira umwanya kuri coing impedance
Kugirango turusheho gucukumbura uburyo bwo kwangirika kwangirika, urebye ingaruka zigihe cyo kwibiza cyicyitegererezo muri electrolyte ku kizamini, haboneka umurongo wo guhindura imirongo yo guhangana n’imyenda ine mugihe cyo kwibiza, nkuko bigaragara ku gishushanyo. 4.

Tanga
Mugihe cyambere cyo kwibiza (10 h), bitewe nubucucike bwiza nuburyo bwububiko, electrolyte iragoye kwibira muri kote.Muri iki gihe, igipfundikizo ceramic cyerekana imbaraga nyinshi.Nyuma yo gushiramo igihe runaka, kurwanya biragabanuka cyane, kubera ko uko ibihe bigenda bisimburana, electrolyte igenda ikora umuyoboro wangirika unyuze mu byobo no mu mwobo wa coating hanyuma ukinjira muri matrike, bigatuma kugabanuka gukabije kwa igifuniko.

Mu cyiciro cya kabiri, iyo ibicuruzwa byangirika byiyongereye ku mubare runaka, ikwirakwizwa rirahagarikwa kandi icyuho kigenda gihagarikwa buhoro buhoro.Muri icyo gihe, iyo electrolyte yinjiye muburyo bwo guhuza ibice byo hasi / matrike, molekile zamazi zizitwara hamwe na Fe element muri matrix kuri coating / matrix ihuze kugirango ikore firime yoroheje ya oxyde, ibuza u kwinjira muri electrolyte muri matrix kandi byongera agaciro ko guhangana.Iyo materique yambaye ubusa yangiritse amashanyarazi, igice kinini cyimvura yicyatsi kibisi ikorerwa munsi ya electrolyte.Igisubizo cya electrolytike nticyahinduye ibara mugihe electrolyzing icyitegererezo cyashizweho, gishobora kwerekana ko hariho imiti yavuzwe haruguru.

Bitewe nigihe gito cyo gushiramo hamwe nimpamvu nini zituruka hanze, kugirango turusheho kubona isano ihinduka ryukuri ryibipimo byamashanyarazi, isesengura rya Tafel ya 19 h na 19.5 h rirasesengurwa.Ubucucike bwa ruswa hamwe nuburwanya byabonetse muri software isesengura zsimpwin bigaragara mu mbonerahamwe ya 2. Urashobora gusanga iyo ushizemo amasaha 19 h, ugereranije nubutaka bwambaye ubusa, ubwinshi bwangirika bwa alumina yuzuye hamwe na alumina ikomatanya irimo ibikoresho byongera nano ni ntoya kandi agaciro ko kurwanya ni nini.Agaciro ko kurwanya ceramic ceramic karubone nanotubes hamwe na coating irimo graphene birasa nkaho, mugihe imiterere yo gutwikisha hamwe na karubone nanotubes hamwe nibikoresho bya graphene byongerewe imbaraga cyane, Ibi biterwa nuko ingaruka ziterwa na karubone imwe ya karubone na graphene ebyiri. itezimbere kwangirika kwibikoresho.

Hamwe no kwiyongera kwigihe cyo kwibiza (19.5 h), kurwanya substrate yambaye ubusa biriyongera, byerekana ko biri mubyiciro bya kabiri byo kwangirika kandi firime ya okiside yicyuma ikorerwa hejuru yubutaka.Mu buryo nk'ubwo, hamwe no kwiyongera kwigihe, kurwanya kwifata ryiza rya alumina ceramic nabyo biriyongera, byerekana ko muri iki gihe, nubwo hari ingaruka zo gutinda kwifata ceramic, electrolyte yinjiye mumurongo uhuza coating / matrix, kandi ikora firime ya oxyde hakoreshejwe imiti.
Ugereranije na alumina itwikiriye irimo 0.2% mwnt-cooh-sdbs, igipande cya alumina kirimo 0.2% graphene hamwe na alumina irimo 0.2% mwnt-cooh-sdbs na 0.2% graphene, kurwanya kwifata byagabanutse cyane hamwe no kwiyongera kwigihe, kugabanuka na 22,94%, 25,60% na 9,61%, byerekana ko electrolyte itigeze yinjira mu gihimba hagati ya coating na substrate muri iki gihe, Ibi biterwa nuko imiterere ya karubone nanotube na graphene ibuza kwinjira muri electrolyte kumanuka, bityo bikarinda matrike.Ingaruka yo guhuza byombi irasuzumwa neza.Igifuniko kirimo ibikoresho bibiri bya nano bifite uburyo bwiza bwo kurwanya ruswa.

Binyuze mu murongo wa Tafel hamwe no guhindura umurongo w'agaciro k'imbogamizi z'amashanyarazi, usanga ko alumina ceramic itwikiriwe na graphene, carbone nanotubes hamwe nuruvange rwabo bishobora kunoza ruswa yo kurwanya matrike y'icyuma, kandi ingaruka zo guhuza byombi zishobora kurushaho kunoza ruswa. Kurwanya ceramic ceramic.Kugirango turusheho gucukumbura ingaruka zinyongeramusaruro za nano kumurwanya wo kwangirika kwifuniko, mikorobe ya mikorobe yubutaka nyuma yo kwangirika.

Tanga

Igicapo 5 (A1, A2, B1, B2) cerekana morfologiya yubuso bwerekanwe 304 ibyuma bitagira umwanda hamwe nubutaka bwiza bwa alumina ceramique mugukuza gutandukanye nyuma yo kwangirika.Igishushanyo 5 (A2) cyerekana ko ubuso nyuma yo kwangirika buba bubi.Kuri substrate yambaye ubusa, ibyobo byinshi binini byangirika bigaragara hejuru nyuma yo kwibizwa muri electrolyte, byerekana ko kurwanya ruswa ya materique yambaye ubusa ari bibi kandi electrolyte yoroshye kwinjira muri matrise.Kubitwikiriye neza bya alumina ceramic, nkuko bigaragara ku gishushanyo cya 5 (B2), nubwo imiyoboro yangirika ikorwa nyuma yo kwangirika, imiterere igereranije kandi irwanya ruswa nziza ya alumina ceramic ceramic ihagarika neza igitero cya electrolyte, isobanura impamvu yabyo kunoza neza impedance ya alumina ceramic coating.

Tanga

Ubuso bwimiterere ya mwnt-cooh-sdbs, ibifuniko birimo graphene 0.2% hamwe nigitambara kirimo 0.2% mwnt-cooh-sdbs na 0.2% graphene.Birashobora kugaragara ko ibifuniko bibiri birimo graphene ku gishushanyo cya 6 (B2 na C2) bifite imiterere iringaniye, guhuza ibice biri mu gipfukisho birakomeye, kandi ibice byose byegeranijwe bifatanye neza.Nubwo ubuso bwangirika na electrolyte, imiyoboro mike ya pore irashingwa.Nyuma yo kwangirika, ubuso butwikiriye ni bwinshi kandi hariho inenge nke.Ku gishushanyo cya 6 (A1, A2), bitewe nibiranga mwnt-cooh-sdbs, igifuniko mbere yo kwangirika nikintu kimwe cyagabanijwe kimwe.Nyuma yo kwangirika, imyenge yigice cyambere iba ndende kandi ndende, kandi umuyoboro uba mwinshi.Ugereranije n’ishusho ya 6 (B2, C2), imiterere ifite inenge nyinshi, ibyo bikaba bihuye nubunini bwogukwirakwiza agaciro katewe no gupima ikizamini cya ruswa.Irerekana ko igipande cya alumina ceramic kirimo graphene, cyane cyane imvange ya graphene na carbone nanotube, ifite imbaraga zo kurwanya ruswa.Ni ukubera ko imiterere ya karubone nanotube na graphene bishobora guhagarika neza ikwirakwizwa no kurinda matrix.

5. Ikiganiro n'incamake
Binyuze mu kizamini cyo kurwanya ruswa ya karubone nanotubes hamwe ninyongera ya graphene kuri alumina ceramic ceramic hamwe nisesengura rya microstructure yo hejuru yububiko, hafashwe imyanzuro ikurikira:

. cm2, inzitizi z'amashanyarazi zongerewe kuva 11388 Ω zigera kuri 28079 Ω, kandi uburyo bwo kurwanya ruswa ni bunini, 46,85%.Ugereranije na alumina ceramic ceramic yuzuye, igiteranyo cya graphene na karubone nanotube ifite imbaraga zo kurwanya ruswa.

.Inzitizi y'amashanyarazi ibanza kugabanuka hanyuma ikiyongera, kandi kurwanya ruswa ya alumina ceramic ceramic ikennye.Imiterere nubusabane bwa karubone nanotubes na graphene byahagaritse kwinjira munsi ya electrolyte.Iyo ushizemo 19.5 h, inzitizi zamashanyarazi zipfundikizo zirimo ibikoresho bya nano zagabanutseho 22,94%, 25.60% na 9.61%, kandi kurwanya ruswa kwangirika kwari byiza.

6. Ingaruka yuburyo bwo gutwika ruswa
Binyuze mu murongo wa Tafel hamwe no guhindura umurongo w'agaciro k'imbogamizi z'amashanyarazi, usanga ko alumina ceramic itwikiriwe na graphene, carbone nanotubes hamwe nuruvange rwabo bishobora kunoza ruswa yo kurwanya matrike y'icyuma, kandi ingaruka zo guhuza byombi zishobora kurushaho kunoza ruswa. Kurwanya ceramic ceramic.Kugirango turusheho gucukumbura ingaruka zinyongeramusaruro za nano kumurwanya wo kwangirika kwifuniko, mikorobe ya mikorobe yubutaka nyuma yo kwangirika.

Igicapo 5 (A1, A2, B1, B2) cerekana morfologiya yubuso bwerekanwe 304 ibyuma bitagira umwanda hamwe nubutaka bwiza bwa alumina ceramique mugukuza gutandukanye nyuma yo kwangirika.Igishushanyo 5 (A2) cyerekana ko ubuso nyuma yo kwangirika buba bubi.Kuri substrate yambaye ubusa, ibyobo byinshi binini byangirika bigaragara hejuru nyuma yo kwibizwa muri electrolyte, byerekana ko kurwanya ruswa ya materique yambaye ubusa ari bibi kandi electrolyte yoroshye kwinjira muri matrise.Kubitwikiriye neza bya alumina ceramic, nkuko bigaragara ku gishushanyo cya 5 (B2), nubwo imiyoboro yangirika ikorwa nyuma yo kwangirika, imiterere igereranije kandi irwanya ruswa nziza ya alumina ceramic ceramic ihagarika neza igitero cya electrolyte, isobanura impamvu yabyo kunoza neza impedance ya alumina ceramic coating.

Ubuso bwimiterere ya mwnt-cooh-sdbs, ibifuniko birimo graphene 0.2% hamwe nigitambara kirimo 0.2% mwnt-cooh-sdbs na 0.2% graphene.Birashobora kugaragara ko ibifuniko bibiri birimo graphene ku gishushanyo cya 6 (B2 na C2) bifite imiterere iringaniye, guhuza ibice biri mu gipfukisho birakomeye, kandi ibice byose byegeranijwe bifatanye neza.Nubwo ubuso bwangirika na electrolyte, imiyoboro mike ya pore irashingwa.Nyuma yo kwangirika, ubuso butwikiriye ni bwinshi kandi hariho inenge nke.Ku gishushanyo cya 6 (A1, A2), bitewe nibiranga mwnt-cooh-sdbs, igifuniko mbere yo kwangirika nikintu kimwe cyagabanijwe kimwe.Nyuma yo kwangirika, imyenge yigice cyambere iba ndende kandi ndende, kandi umuyoboro uba mwinshi.Ugereranije n’ishusho ya 6 (B2, C2), imiterere ifite inenge nyinshi, ibyo bikaba bihuye nubunini bwogukwirakwiza agaciro katewe no gupima ikizamini cya ruswa.Irerekana ko igipande cya alumina ceramic kirimo graphene, cyane cyane imvange ya graphene na carbone nanotube, ifite imbaraga zo kurwanya ruswa.Ni ukubera ko imiterere ya karubone nanotube na graphene bishobora guhagarika neza ikwirakwizwa no kurinda matrix.

7. Ikiganiro n'incamake
Binyuze mu kizamini cyo kurwanya ruswa ya karubone nanotubes hamwe ninyongera ya graphene kuri alumina ceramic ceramic hamwe nisesengura rya microstructure yo hejuru yububiko, hafashwe imyanzuro ikurikira:

. cm2, inzitizi z'amashanyarazi zongerewe kuva 11388 Ω zigera kuri 28079 Ω, kandi uburyo bwo kurwanya ruswa ni bunini, 46,85%.Ugereranije na alumina ceramic ceramic yuzuye, igiteranyo cya graphene na karubone nanotube ifite imbaraga zo kurwanya ruswa.

.Inzitizi y'amashanyarazi ibanza kugabanuka hanyuma ikiyongera, kandi kurwanya ruswa ya alumina ceramic ceramic ikennye.Imiterere nubusabane bwa karubone nanotubes na graphene byahagaritse kwinjira munsi ya electrolyte.Iyo ushizemo 19.5 h, inzitizi zamashanyarazi zipfundikizo zirimo ibikoresho bya nano zagabanutseho 22,94%, 25.60% na 9.61%, kandi kurwanya ruswa kwangirika kwari byiza.

.Nyuma yo kwangirika, imyenge yigice cyambere iba ndende kandi ndende, kandi imiyoboro iba ndende.Igipfundikizo kirimo graphene gifite imiterere iringaniye mbere yo kwangirika, guhuza ibice bigize igifuniko biregeranye, kandi ibice byose byegeranijwe bifunze neza.Nubwo ubuso bwangirika na electrolyte nyuma yo kwangirika, hariho imiyoboro mike ya pore kandi imiterere iracyari mwinshi.Imiterere ya karubone nanotubes na graphene irashobora guhagarika neza ikwirakwizwa ryimyanya no kurinda matrix.


Igihe cyo kohereza: Werurwe-09-2022