Lanthanum zirconate. Iyi fu yera, yangiritse (CAS No 12031-48-0, MW 572.25) ni chimique inert kandi ntishobora gushonga mumazi cyangwa aside. Imiterere ya pyrochlore itajegajega hamwe nuburyo bwo gushonga (hafi 2680 ° C) bituma iba insuliranteri idasanzwe. Mubyukuri, lanthanum zirconate ikoreshwa cyane mugukwirakwiza ubushyuhe ndetse no kubika amajwi, nkuko byagaragajwe nabatanga ibikoresho. Ihuriro ryumuriro muke hamwe nuburinganire bwimiterere nabyo bifite akamaro mubikoresho bya catalizator hamwe na fluorescent (Photoluminescent), byerekana ibintu byinshi.
Uyu munsi, inyungu muri lanthanum zirconate iriyongera mumirima igezweho. Mu kirere no mu mbaraga zikoreshwa, kurugero, iyi ceramic yateye imbere irashobora gufasha gukora moteri yoroheje, ikora neza na turbine. Imikorere yayo nziza cyane yumuriro-barrière bivuze ko moteri ishobora gukora cyane nta byangiritse, kuzamura imikorere ya peteroli no kugabanya ibyuka bihumanya. Izi mico kandi zihuza intego ziterambere rirambye kwisi: izirinda neza nibigize igihe kirekire birashobora kugabanya imyanda yingufu no kugabanya umusaruro wa gaze ya parike mukubyara amashanyarazi no gutwara abantu. Muri make, lanthanum zirconate yiteguye nkibikoresho byubuhanga buhanitse buhuza ibumba ryera ryambere hamwe nudushya twiza.
Imiterere ya Crystal nibintu byingenzi
Lanthanum zirconate ni iyumuryango udasanzwe-isi zirconate, hamwe nuburyo rusange bwa “A₂B₂O₇” pyrochlore (A = La, B = Zr). Uru rufunguzo rwa kristu rwarimbere: LZO yerekana ko nta cyiciro gihinduka kuva ubushyuhe bwicyumba kugeza aho gishonga. Ibi bivuze ko idacika cyangwa ngo ihindure imiterere munsi yubushyuhe, bitandukanye nubundi bukorikori. Ahantu ho gushonga ni hejuru cyane (~ 2680 ° C), byerekana imbaraga zumuriro.
Ibyingenzi byingenzi nubushyuhe bwa La₂Zr₂O₇ harimo:
● Amashanyarazi make:LZO ikora ubushyuhe nabi cyane. Dense La₂Zr₂O₇ ifite ubushyuhe bwumuriro bwa 1.5-1.8 W · m⁻¹ · K⁻¹ kuri 1000 ° C. Mugereranije, yttria isanzwe-stabilized zirconia (YSZ) iri hejuru cyane. Ubu bushobozi buke ningirakamaro kubutaka bwa barrière (TBCs) burinda ibice bya moteri.
Expansion Kwagura ubushyuhe bwinshi (CTE):Coefficient yayo yo kwagura ubushyuhe (~ 11 × 10⁻⁶ / K kuri 1000 ° C) ni nini. Mugihe CTE ndende ishobora gutera impungenge zidahuye nibice byicyuma, ubwubatsi bwitondewe (igishushanyo mbonera) gishobora kubyakira.
Resistance Kurwanya icyaha:LZO irwanya ubukonje bwinshi. Uku "gucumura gucumura" bifasha igifuniko kugumana microstructure yuzuye, ningirakamaro mugukoresha ubushyuhe.
Stable Imiti ihamye:Lanthanum zirconate ni inert ya chimique kandi yerekana imbaraga zo kurwanya ubushyuhe bwo hejuru cyane. Ntabwo ikora cyangwa ngo ibore byoroshye mubidukikije bikaze, kandi lanthanum ihamye hamwe na okiside ya zirconium ni byiza kubidukikije.
Ikwirakwizwa rya ogisijeni nkeya:Bitandukanye na YSZ, LZO ifite ogisijeni nkeya ion ikwirakwizwa. Muri barrière yumuriro, ibi bifasha kugabanya okiside yicyuma kiri munsi, byongerera ubuzima ubuzima.
Iyi mico ituma lanthanum zirconate idasanzwe yubushyuhe butera ubushyuhe. Mubyukuri, abashakashatsi bagaragaza ko LZO "itwara ubushyuhe buke cyane (1.5-1.8 W / m · K kuri 1000 ° C kubikoresho byuzuye)" ninyungu yibanze kubikorwa bya TBC. Mu myenda ifatika, porosity irashobora kugabanya umuvuduko mwinshi (rimwe na rimwe munsi ya 1 W / m · K).
Synthesis hamwe nuburyo bwibikoresho
Lanthanum zirconate isanzwe itegurwa no kuvanga okiside ya lanthanum (La₂O₃) na zirconiya (ZrO₂) mubushyuhe bwinshi. Uburyo busanzwe burimo ibintu bikomeye-reaction, gutunganya sol-gel, hamwe n-imvura. Ukurikije inzira, ifu yavuyemo irashobora gukorwa neza cyane (nano- kugeza kuri micron-nini) cyangwa igasunikwa. Ababikora nka EpoMaterial batanga ingano yingirakamaro: kuva ifu ya nanometero kugeza kuri subicron cyangwa granile, ndetse nuburyo bwa serefegitura. Isuku ningirakamaro mubikorwa-byo hejuru; ubucuruzi LZO iraboneka kuri 99.5-99.99%.
Kuberako LZO ihamye, ifu mbisi iroroshye kuyifata. Bigaragara nkumukungugu mwiza wera (nkuko bigaragara mumashusho yibicuruzwa hepfo). Ifu ibikwa yumye kandi ifunze kugirango irinde ububobere ubwo aribwo bwose, nubwo budashonga mumazi na acide. Iyi mitunganyirize yimikorere ituma byoroha gukoreshwa mugukora ubukorikori bugezweho nububiko nta byago bidasanzwe.
Urugero rwimiterere yibikoresho: EpoMaterial isukuye cyane Lanthanum Zirconate (CAS 12031-48-0) itangwa nkifu yera yera igenewe gukoresha spray yumuriro. Irashobora guhindurwa cyangwa gukopororwa hamwe nizindi ion kugirango zihuze imiterere.
Lanthanum zirconate (La2Zr2O7, LZO) ni ubwoko bwa zirconate idasanzwe, kandi ikoreshwa henshi mubice byinshi nko kubika ubushyuhe, kubika amajwi, ibikoresho bya catalizator, nibikoresho bya fluorescent.
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Porogaramu muri Plasma Gusasa hamwe nubushyuhe bwa Barrique
Bumwe mu buryo bukoreshwa cyane muri lanthanum zirconate ni nk'ikoti ryo hejuru mu gutwika amashyuza (TBCs). TBCs ni ceramic ceramic coating ikoreshwa mubice bya moteri ikomeye (nka turbine blade) kugirango ubirinde ubushyuhe bukabije. Sisitemu isanzwe ya TBC ifite ikote ryumuringa hamwe na ceramic topcoat, ishobora kubikwa muburyo butandukanye nka plasma plasma yo mu kirere (APS) cyangwa electron-beam PVD.
Lanthanum zirconate nkeya yumuriro nubushyuhe bituma iba umukandida ukomeye wa TBC. Ugereranije na YSZ isanzwe, LZO irashobora kwihanganira ubushyuhe bwo hejuru hamwe n'ubushyuhe buke mu cyuma. Kubera iyo mpamvu, ubushakashatsi bwinshi bwita lanthanum zirconate "ibikoresho byabakandida bitanga ikizere kubisabwa na TBC" bitewe nubushyuhe buke bwumuriro hamwe nubushyuhe bwinshi. Mu magambo asobanutse neza, igifuniko cya lanthanum zirconate gikomeza imyuka ishyushye kandi ikarinda imiterere yacyo ndetse no mubihe bikabije.
Inzira ya plasma itera cyane cyane kuri La₂Zr₂O₇. Mu gutera plasma, ifu ya LZO yashyutswe mu ndege ya plasma hanyuma ikazunguruka hejuru kugirango ikore ceramic. Ubu buryo bukora lamellar, microstructure yongerera imbaraga. Dukurikije ubuvanganzo bwibicuruzwa, ifu ya LZO ifite isuku nini igenewe mu buryo bweruye “gutera amashyanyarazi ya plasma (gutera akabariro). Igipfundikizo gishobora kuvamo kirashobora guhuzwa (urugero hamwe na poritike igenzurwa cyangwa doping) kuri moteri yihariye cyangwa icyogajuru gikeneye.
Uburyo TBC itezimbere sisitemu yo mu kirere ningufu: Mugukoresha ibifuniko bishingiye kuri LZO kubice bya moteri, moteri yindege hamwe na gaz turbine birashobora gukora neza mubushyuhe bwinshi. Ibi biganisha ku gutwika neza no gusohora ingufu. Mu myitozo, abashakashatsi basanze TBCs “igumana ubushyuhe imbere mu cyumba cyaka” kandi igateza imbere ubushyuhe ndetse ikanagabanya imyuka ihumanya ikirere. Muyandi magambo, impuzu ya lanthanum zirconate ifasha kugumana ubushyuhe aho ikenewe (imbere mucyumba) no kwirinda gutakaza ubushyuhe, bityo moteri ikoresha lisansi cyane. Ubu bufatanye hagati yo gukingirwa neza no gutwikwa neza bishimangira LZO akamaro k’ingufu zisukuye kandi zirambye.
Byongeye kandi, kuramba kwa LZO kwagura intera yo kubungabunga. Kurwanya gucumura no okiside bivuze ko ceramic igumaho neza binyuze mubushyuhe bwinshi. Igishushanyo mbonera cya lanthanum zirconate TBC irashobora rero kugabanya imyuka yubuzima rusange muri rusange mugabanya igice cyasimbuwe nigihe gito. Muncamake, plasma yatewe LZO yambarwa nurufunguzo rushoboza ikoranabuhanga ryibisekuruza bizaza-bikora neza hamwe na moteri ya aero-moteri.
Ibindi bikorwa byinganda
Kurenga plasma yatewe na TBCs, imiterere yihariye ya lanthanum zirconate isanga ikoreshwa mubutaka butandukanye bwateye imbere:
Ubushyuhe n'amajwi: Nkuko byagaragajwe nababikora, LZO ikoreshwa mubikoresho rusange. Kurugero, porous lanthanum zirconate ceramics irashobora guhagarika ubushyuhe mugihe nanone igabanya amajwi. Izi paneli cyangwa fibre irashobora gukoreshwa mumatanura cyangwa ibikoresho byububiko aho hakenewe ubushyuhe bwo hejuru.
Isesengura: Okiside ya Lanthanum izwiho kuba umusemburo (urugero nko gutunganya cyangwa kurwanya umwanda), kandi imiterere ya LZO irashobora kwakira ibintu bya catalitiki. Mubikorwa, LZO irashobora gukoreshwa nkinkunga cyangwa ibice muri catalizator ya reaction ya gaze. Ihungabana ryayo ku bushyuhe bwo hejuru ituma ikurura inzira nko guhinduranya syngas cyangwa kuvura amamodoka, nubwo ingero zihariye za catalizike ya La₂Zr₂O₇ ziracyagaragara mubushakashatsi.
Materials Ibikoresho byiza na Fluorescent: Igishimishije, lanthanum zirconate irashobora gukopororwa hamwe na ion zidasanzwe-isi kugirango ikore fosifore cyangwa scintillator. Izina ryibikoresho ndetse rigaragara no gusobanura ibikoresho bya fluorescent. Kurugero, gukoporora LZO hamwe na cerium cyangwa europium bishobora gutanga ubushyuhe bwo hejuru-bwihanganira luminescent kristu yo kumurika cyangwa kwerekana ikoranabuhanga. Ingufu za fonone nkeya (kubera okiside ya oxyde) irashobora gutuma igira akamaro muri optique ya infragre cyangwa scintillation optique.
Electronics Ibyuma bya elegitoroniki bigezweho: Mubikorwa bimwe byihariye, firime ya lanthanum zirconate yizwe nka insuliranti-k (nkeya ya dielectric) cyangwa inzitizi zo gukwirakwiza mikorobe. Ihungabana ryayo mu gukwirakwiza ikirere no kuri voltage nyinshi (kubera umurongo mwinshi) birashobora gutanga inyungu kurenza okiside isanzwe mubidukikije bya elegitoroniki.
● Gukata Ibikoresho no Kwambara Ibice: Mugihe bidakunze kubaho, ubukana bwa LZO hamwe nubushyuhe bwumuriro bivuze ko bushobora gukoreshwa nkigikoresho gikomeye cyo gukingira ibikoresho, bisa nkukuntu andi mafumbire ya ceramic akoreshwa mukurwanya kwambara.
Ubwinshi bwa La₂Zr₂O₇ bukomoka kuri kuba ceramic ihuza chimie-yisi idasanzwe hamwe nuburemere bwa zirconi. Nibice bigize inzira yagutse yubutaka "budasanzwe-isi zirconate" (nka gadolinium zirconate, ytterbium zirconate, nibindi) byakozwe muburyo bwiza bwubushyuhe bwo hejuru.
Inyungu n'ibidukikije
Lanthanum zirconate igira uruhare mu kuramba cyane cyane binyuze mu gukoresha ingufu no kuramba. Nka insulator yumuriro, ituma imashini zigera kumikorere imwe hamwe na lisansi nkeya. Kurugero, gutwika icyuma cya turbine na LZO birashobora kugabanya ubushyuhe bityo bigatuma moteri ikora neza. Kugabanuka kwamavuta bisobanurwa muburyo bwo kugabanya imyuka ya CO₂ na NOₓ kuri buri gice cyingufu. Mu bushakashatsi bumwe buherutse gukorwa, gukoresha LZO muri moteri yaka imbere hamwe na biyogi byageze kuri feri yo hejuru ya feri kandi bigabanya cyane imyuka ihumanya ikirere. Iterambere nubwoko bwinyungu zishakishwa murwego rwo gutwara ibintu neza hamwe na sisitemu yingufu.
Ceramic ubwayo ni chimique inert, bivuze ko idatanga umusaruro wangiza-ibicuruzwa. Bitandukanye na insulatrice kama, ntisohora ibintu bihindagurika mubushyuhe bwinshi. Mubyukuri, ubushyuhe bwayo buhanitse ndetse butuma bikwiranye n’ibicanwa biva mu bidukikije (urugero: hydrogène yaka). Inyungu iyo ari yo yose itangwa na LZO muri turbine cyangwa generator byongera inyungu zirambye za lisansi isukuye.
Kuramba no kugabanya imyanda: Kurwanya LZO kurwanya kwangirika (sintering na okiside irwanya) bisobanura kandi igihe kirekire cyo kubaho kubice bisize. Icyuma cya turbine gifite ikote rirambye rya LZO kirashobora gukomeza gukorerwa igihe kirekire kuruta icyafashwe, bikagabanya ibikenerwa kubisimbuza bityo bikabika ibikoresho ningufu mugihe kirekire. Uku kuramba ninyungu zitaziguye zibidukikije, kuko ninganda nke zirakenewe.
Ariko, ni ngombwa gusuzuma ibintu bidasanzwe-isi yibintu. Lanthanum ni isi idasanzwe, kandi kimwe nibintu byose, ubucukuzi bwayo no kujugunya bitera kwibaza ibibazo birambye. Niba bidacunzwe neza, gukuramo-isi bidasanzwe birashobora kwangiza ibidukikije. Isesengura rya vuba ryerekana ko impuzu ya lanthanum zirconate “irimo ibintu bidasanzwe by’ubutaka, bizamura impungenge n’uburozi bujyanye no gucukura ubutaka budasanzwe no kujugunya ibintu”. Ibi bishimangira ko hakenewe isoko rya La₂Zr₂O₇ hamwe ningamba zishobora gutunganywa kugirango zikoreshe. Ibigo byinshi murwego rwibikoresho byateye imbere (harimo abatanga epomaterial) barabizirikana kandi bashimangira ubuziranenge no kugabanya imyanda mu musaruro.
Muncamake, ingaruka zidukikije zo gukoresha lanthanum zirconate muri rusange ni nziza mugihe imikorere yayo nibyiza byo kubaho. Mugushoboza gutwikwa neza hamwe nibikoresho birebire, ubukerarugendo bushingiye kuri LZO bushobora gufasha inganda kugera ku ntego z’ingufu z’icyatsi. Gucunga neza ubuzima bwibikoresho ni urufunguzo rwo gutekereza.
Ibihe bizaza
Urebye imbere, lanthanum zirconate yiteguye gukura mubyingenzi mugihe inganda zateye imbere hamwe nikoranabuhanga-isuku bikomeje gutera imbere:
Tur Ibisekuru bizakurikiraho:Nkuko indege nimbaraga za turbine zituma ubushyuhe bukora cyane (kugirango bikore neza cyangwa bihuze n’ibindi bicanwa), ibikoresho bya TBC nka LZO bizaba ingenzi. Hariho ubushakashatsi burimo gukorwa muburyo butandukanye aho igipande cya lanthanum zirconate cyangwa ikoporora LZO yicaye hejuru ya YSZ gakondo, ihuza ibyiza bya buri.
Ikirere n'Ingabo:Kurwanya imirasire yibikoresho (byavuzwe mubushakashatsi bumwe) bishobora gutuma ikurura ikirere cyangwa ikoreshwa rya kirimbuzi. Igihagararo cyayo munsi ya irrasiyo ni agace k'iperereza rikorwa.
Devices Ibikoresho byo guhindura ingufu:Mugihe LZO itari isanzwe ya electrolyte, ubushakashatsi bumwebumwe burasesengura ibikoresho bishingiye kuri lanthanum mungirangingo ya lisansi ikomeye na selile ya electrolysis. .
● Ibikoresho Guhitamo:Isoko ryamasoko yubukorikori bwihariye riragenda ryiyongera. Abatanga ibicuruzwa ubu ntibatanga gusa ubuziranenge bwa LZO gusa ahubwo banatanga impinduka za ion-urugero (urugero, kongeramo samariyumu, gadolinium, nibindi kugirango duhindure akazu ka kristu). EpoMaterial ivuga ubushobozi bwo gukora "ion doping and modification" ya lanthanum zirconate. Bene doping irashobora guhindura imitungo nko kwagura ubushyuhe cyangwa gutwara ibintu, bigatuma injeniyeri zidoda ceramic kubububiko bwihariye.
Trend Imigendekere yisi yose:Hamwe nisi yose yibanda ku buryo burambye hamwe n’ikoranabuhanga rigezweho, ibikoresho nka lanthanum zirconate bizakurura ibitekerezo. Uruhare rwayo mu gutuma moteri ikora neza ihuza ibipimo byubukungu bwa peteroli n’amabwiriza agenga ingufu. Byongeye kandi, iterambere mugucapisha 3D no gutunganya ceramic birashobora koroha gukora ibice bya LZO cyangwa ibifuniko muburyo bushya.
Mubyukuri, lanthanum zirconate yerekana uburyo chimie gakondo ceramic yujuje ibyifuzo byikinyejana cya 21. Ihuriro ryibintu bidasanzwe-isi ihindagurika hamwe nubukorikori bwa ceramic irayihuza nimirima ifite akamaro: indege zirambye, kubyara ingufu, nibindi birenze. Mugihe ubushakashatsi bukomeje (reba ibyasuzumwe vuba aha kuri TBCs ishingiye kuri LZO), porogaramu nshya zishobora kugaragara, bikarushaho gushimangira akamaro kayo mubikoresho bigezweho.
Lanthanum zirconate (La₂Zr₂O₇. Hamwe nubushyuhe buke bwumuriro, ubushyuhe bwo hejuru cyane, hamwe nuburyo bukomeye bwa pyrochlore, birakwiriye cyane cyane kubutaka bwa plasma bwatewe na barrière ya barrière hamwe nibindi bikorwa. Imikoreshereze yacyo mu kirere TBCs na sisitemu yingufu zirashobora kunoza imikorere no kugabanya ibyuka bihumanya ikirere, bigira uruhare mu ntego zirambye. Abahinguzi nka EpoMaterial batanga ifu-yuzuye ya LZO ifu kubwiyi porogaramu igezweho. Mu gihe inganda zo ku isi zigenda zerekeza ku mbaraga zisukuye ndetse n’ibikoresho byubwenge, lanthanum zirconate igaragara nkubutaka bukomeye bwikoranabuhanga - bumwe bushobora gufasha moteri gukonja, imiterere ikomeye, hamwe na sisitemu icyatsi.
Igihe cyo kohereza: Jun-11-2025