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Kwiga kurwanya ruswa ya graphene / carbone nanotube ishimangira alumina ceramic coating

1. Gutegura gutwikira
Kugirango byorohereze ikizamini cyamashanyarazi nyuma, 30mm yatoranijwe × 4 mm 304 ibyuma bitagira umwanda nkibishingiro.Igipolonye hanyuma ukureho igisigisigi cya oxyde gisigaye hamwe nuduce twa ruste hejuru yubutaka hamwe na sandpaper, ubishyire muri beaker irimo acetone, kuvura ibibara hejuru yubutaka hamwe na bg-06c ultrasonic isukura uruganda rwa electronics 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 ukundi nyuma yo gusya umupira urangiye, hanyuma ushireho umuvuduko wo kuzunguruka wikigega cyo gusya umupira kuba 1/2 ukundi nyuma yo gusya umupira.Umupira usya ceramic agregate hamwe na binder bivangwa neza ukurikije igice kinini cya 1.0 ∶ 0.8.Hanyuma, ceramic ceramic coating yabonetse mugukiza inzira.

Ikizamini cya ruswa
Muri ubu bushakashatsi, ikizamini cya electrochemical corrosion cyakira Shanghai Chenhua chi660e amashanyarazi, kandi ikizamini gikoresha sisitemu eshatu zo gupima electrode.Electrode ya platine ni electrode ifasha, ifeza ya silver ya chloride ya elegitoronike ni electrode yerekana, naho icyitegererezo cyashizweho ni electrode ikora, hamwe nubuso bugaragara bwa 1cm2.Huza electrode yerekana, ikora electrode ikora hamwe na electrode yingirakamaro muri selile ya electrolytike 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 utubatswe hamwe nubutaka bwa ceramic washyizwe hamwe ninyongeramusaruro zitandukanye nyuma yamashanyarazi ya 19h.Umuvuduko wa ruswa, ububobere bwa ruswa hamwe namakuru yikizamini cyo kubuza amashanyarazi yakuwe mubizamini bya elegitoroniki yamashanyarazi bigaragara mumbonerahamwe 1.

Tanga
Iyo ubwinshi bwangirika bwangirika ari buto kandi imbaraga zo kurwanya ruswa ziba nyinshi, ingaruka zo kurwanya ruswa ziba nziza.Birashobora kugaragara ku gishushanyo cya 3 no ku mbonerahamwe ya 1 ko iyo igihe cyo kwangirika ari 19h, imbaraga nyinshi zo kwangirika kwa materique yambaye ubusa ni -0.680 V, naho ubwinshi bwangirika bwa matrix nabwo bunini, bugera kuri 2.890 × 10-6 A .Irerekana ko igipfundikizo ceramic gifite uruhare runini rwo gukingira kandi gishobora kunoza ruswa yo kwangirika kwa electrolyte itabogamye.

Iyo 0.2% mwnt-cooh-sdbs cyangwa 0.2% ya graphene yongewemo kuri coating, ubwinshi bwikigereranyo cya ruswa bwaragabanutse, ubukana bwiyongera, kandi kurwanya ruswa 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 na 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 imbaraga zo kurwanya ruswa, kandi ingaruka ziterwa na karubone nanotube na graphene birashobora kunoza neza kwangirika kwangirika kwubutaka.

4. Ingaruka zo gushira umwanya kuri coing impedance
Kugirango turusheho gucukumbura uburyo bwo kwangirika kwangirika, urebye ingaruka zigihe cyo kwibiza cyicyitegererezo muri electrolyte mugupimisha, haboneka umurongo wo guhindura umurongo wo kurwanya imyenda ine mugihe cyo kwibiza, nkuko bigaragara mumashusho. 4.

Tanga
Mugihe cyambere cyo kwibiza (10 h), bitewe nubucucike bwiza nuburyo bwo gutwikira, electrolyte iragoye kwibira mumyenda.Muri iki gihe, ceramic coating yerekana kwihanganira cyane.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 hanyuma igacengera muri matrike, bigatuma kugabanuka gukomeye 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 / matrix, molekules zamazi zizitwara hamwe na Fe element muri matrix kuri coating / matrix ihuza 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 gikorerwa munsi ya electrolyte.Igisubizo cya electrolytique nticyahinduye ibara mugihe amashanyarazi ya elegitoronike yatwikiriye, ashobora kwerekana ko hariho imiti yavuzwe haruguru.

Bitewe nigihe gito cyo gushiramo hamwe nimpamvu nini zituruka hanze, kugirango turusheho kubona isano nyayo yimpinduka zingingo zamashanyarazi, isesengura rya Tafel ya 19 h na 19.5 h rirasesengurwa.Ubucucike bwa ruswa hamwe nuburwanya byabonetse kuri software isesengura zsimpwin byerekanwe kumeza ya 2. Urashobora kubona ko iyo ushizemo 19 h, ugereranije na substrate yambaye ubusa, ubwinshi bwangirika bwa alumina yuzuye hamwe na alumina ikomatanya irimo ibikoresho bya nano byongeweho ni ntoya kandi agaciro ko kurwanya ni nini.Agaciro ko kurwanya ceramic ceramic karubone nanotubes hamwe nigitambaro kirimo graphene ni kimwe, mugihe imiterere yububiko hamwe na carbone nanotubes hamwe nibikoresho bya graphene byongerewe imbaraga cyane, Ibi ni ukubera ko ingaruka ziterwa na carbone nanotubes imwe na graphene-ebyiri. itezimbere kwangirika kwibikoresho.

Hamwe no kwiyongera kwigihe cyo kwibiza (19.5 h), kurwanya insimburangingo yambaye ubusa biriyongera, byerekana ko biri mubyiciro bya kabiri byo kwangirika kandi firime ya oxyde ikorerwa hejuru yubutaka.Mu buryo nk'ubwo, hamwe no kwiyongera kwigihe, kurwanya ubukana bwa alumina ceramic ceramic nabyo biriyongera, byerekana ko muri iki gihe, nubwo hari ingaruka zo gutinda kwa ceramic, electrolyte yinjiye muburyo bwo guhuza / matrix, hanyuma ikora firime ya oxyde binyuze mumiti.
Ugereranije na alumina yatwikiriye 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 mubihuzabikorwa hagati ya coating na substrate muri iki gihe, Ibi biterwa nuko imiterere ya nanotube ya karubone na graphene ibuza kwinjira munsi ya electrolyte, bityo bikarinda matrike.Ingaruka yo guhuza byombi iragenzurwa.Igifuniko kirimo ibikoresho bibiri bya nano bifite imbaraga zo kurwanya ruswa.

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

Tanga

Igicapo 5 (A1, A2, B1, B2) herekana morfologiya yubuso bwerekanwe 304 ibyuma bitagira umuyonga hamwe nubutaka bwiza bwa alumina ceramics mugihe kinini 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 kwihanganira kwangirika kwa materique yambaye ubusa ari bibi kandi electrolyte yoroshye kwinjira muri matrise.Kubutaka bwa 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

Imiterere ya morfologiya ya mwnt-cooh-sdbs, ibifuniko birimo 0.2% graphene 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 gipfundikizo birakomeye, kandi ibice byose byegeranye bifatanye neza.Nubwo ubuso bwangirika na electrolyte, imiyoboro ntoya irashirwaho.Nyuma yo kwangirika, ubuso butwikiriye ni buke kandi hariho inenge nke.Ku gishushanyo cya 6 (A1, A2), bitewe nibiranga mwnt-cooh-sdbs, gutwikira mbere yo kwangirika ni kugabanwa kimwe.Nyuma yo kubora, imyenge yigice cyambere iba ndende kandi ndende, kandi umuyoboro uba mwinshi.Ugereranije n’ishusho ya 6 (B2, C2), imiterere ifite inenge nyinshi, ijyanye nubunini bwogukwirakwiza agaciro katewe no gupima amashanyarazi.Irerekana ko alumina ceramic coating irimo graphene, cyane cyane imvange ya graphene na carbone nanotube, ifite imbaraga zo kurwanya ruswa.Ibi biterwa nuko imiterere ya karubone nanotube na graphene irashobora guhagarika neza ikwirakwizwa no kurinda matrix.

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

. cm2, inzitizi z'amashanyarazi zongerewe kuva 11388 Ω zigera kuri 28079 and, kandi imbaraga zo kurwanya ruswa nini nini, 46,85%.Ugereranije na alumina ceramic ceramic, igifuniko cya graphene na carbone 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 kumanuka kwa electrolyte.Iyo ushizemo 19.5 h, inzitizi zamashanyarazi zipfundikizo zirimo ibikoresho bya nano byagabanutseho 22,94%, 25.60% na 9.61%, kandi kurwanya ruswa kwangirika kwari byiza.

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

Igicapo 5 (A1, A2, B1, B2) herekana morfologiya yubuso bwerekanwe 304 ibyuma bitagira umuyonga hamwe nubutaka bwiza bwa alumina ceramics mugihe kinini 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 kwihanganira kwangirika kwa materique yambaye ubusa ari bibi kandi electrolyte yoroshye kwinjira muri matrise.Kubutaka bwa 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.

Imiterere ya morfologiya ya mwnt-cooh-sdbs, ibifuniko birimo 0.2% graphene 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 gipfundikizo birakomeye, kandi ibice byose byegeranye bifatanye neza.Nubwo ubuso bwangirika na electrolyte, imiyoboro ntoya irashirwaho.Nyuma yo kwangirika, ubuso butwikiriye ni buke kandi hariho inenge nke.Ku gishushanyo cya 6 (A1, A2), bitewe nibiranga mwnt-cooh-sdbs, gutwikira mbere yo kwangirika ni kugabanwa kimwe.Nyuma yo kubora, imyenge yigice cyambere iba ndende kandi ndende, kandi umuyoboro uba mwinshi.Ugereranije n’ishusho ya 6 (B2, C2), imiterere ifite inenge nyinshi, ijyanye nubunini bwogukwirakwiza agaciro katewe no gupima amashanyarazi.Irerekana ko alumina ceramic coating irimo graphene, cyane cyane imvange ya graphene na carbone nanotube, ifite imbaraga zo kurwanya ruswa.Ibi biterwa nuko imiterere ya karubone nanotube na graphene irashobora guhagarika neza ikwirakwizwa no kurinda matrix.

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

. cm2, inzitizi z'amashanyarazi zongerewe kuva 11388 Ω zigera kuri 28079 and, kandi imbaraga zo kurwanya ruswa nini nini, 46,85%.Ugereranije na alumina ceramic ceramic, igifuniko cya graphene na carbone 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 kumanuka kwa electrolyte.Iyo ushizemo 19.5 h, inzitizi zamashanyarazi zipfundikizo zirimo ibikoresho bya nano byagabanutseho 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 bitwikiriye hafi, kandi ibice byose byegeranye bifatanye neza.Nubwo ubuso bwangirika na electrolyte nyuma yo kubora, hariho imiyoboro mike kandi imiterere iracyari mwinshi.Imiterere ya carbone nanotubes na graphene irashobora guhagarika neza ikwirakwizwa ryayo no kurinda matrix.


Igihe cyo kohereza: Werurwe-09-2022