Lanthanum zirconate(kemikari formula La₂Zr₂O₇) isingawanzo-earth oxide ceramic iyo yakwezva kutarisisa kuri kukura kune yakasarudzika yekupisa uye makemikari zvinhu. Iyi chena, refractory powder (CAS No. 12031-48-0, MW 572.25) ikemikari inert uye isingasviki mumvura kana asidi. Yayo yakagadzika pyrochlore crystal chimiro uye yakakwirira kunyungudika (yakakomberedza 2680 ° C) inoita kuti ive yakasarudzika yekupisa insulator. Muchokwadi, lanthanum zirconate inoshandiswa zvakanyanya kupisa kupisa uye kunyangwe kuvharisa inzwi, sekucherekedzwa nevanopa zvinhu. Iko kusanganiswa kweiyo yakaderera yekupisa conductivity uye kugadzikana kwechimiro kunobatsirawo mune zvinokonzeresa uye fluorescent (photoluminescent) zvinhu, zvichiratidza kuenderana kwezvinhu.
Nhasi, kufarira mu lanthanum zirconate kuri kuwedzera muminda yekucheka. Mune aerospace uye simba rekushandisa, semuenzaniso, iyi ceramic yepamusoro inogona kubatsira kugadzira yakareruka, inoshanda zvakanyanya injini uye turbines. Yayo yepamusoro-soro yekupisa-inodzivirira kuita inoreva kuti injini dzinogona kumhanya zvakanyanya pasina kukuvara, kuvandudza kushanda kwemafuta uye kuderedza kuburitswa. Hunhu uhu hunosungirirana muzvibodzwa zvepasi rose: kuvharisa zviri nani uye zvinhu zvinogara kwenguva refu zvinogona kucheka kutambisa simba uye kudzikisira kubuda kwegasi regreenhouse mukugadzira magetsi nekufambisa. Muchidimbu, lanthanum zirconate yakamisikidzwa seyakasvibira-tekinoroji zvinhu zvakasvibirira izvo zvinosungirira maceramics epamusoro neakachena-simba hunyanzvi.
Crystal Mamiriro uye Makiyi Zvivakwa
Lanthanum zirconate ndeyemhuri isingawanzo-yepasi zirconate, ine general "A₂B₂O₇" pyrochlore chimiro (A = La, B = Zr). Iyi crystal framework yakagadzikana: LZO inoratidza hapana shanduko yechikamu kubva mukamuri tembiricha kusvika pakunyungudika kwayo. Izvi zvinoreva kuti haina kutsemuka kana kushandura chimiro pasi pekupisa kutenderera, kusiyana nemamwe maceramics. Nzvimbo yayo yekunyungudika yakakwira zvakanyanya (~ 2680 ° C), ichiratidza kusimba kwayo kwekupisa.
Yakakosha yemuviri uye yekupisa zvimiro zveLa₂Zr₂O₇ zvinosanganisira:
● Low thermal conductivity:LZO inoitisa kupisa zvakanyanya. Dense La₂Zr₂O₇ ine thermal conductivity inosvika 1.5–1.8 W·m⁻¹·K⁻¹ pa1000 °C. Nokuenzanisa, yakajairika yttria-yakagadzikana zirconia (YSZ) yakakwirira kwazvo. Iyi yakaderera conductivity yakakosha kune thermal barrier coatings (TBCs) inodzivirira zvikamu zveinjini.
● Kuwedzera kupisa kwepamusoro (CTE):Coefficient yayo yekuwedzera kwekupisa (~ 11×10⁻⁶ /K pa1000 °C) yakakura. Nepo CTE yakakwira inogona kukonzera kusagadzikana kushushikana nesimbi zvikamu, kungwarira engineering (bond jasi dhizaini) inogona kugadzirisa izvi.
● Sintering resistance:LZO inoramba densification pakupisa kwakanyanya. Iyi "sintering resistance" inobatsira kuvhara kuchengetedza porous microstructure, iyo inokosha pakupisa kwekushisa.
● Kugadzikana kwemakemikari:Lanthanum zirconate ine makemikari inert uye inoratidza yakanakisa yepamusoro-tembiricha oxidation kuramba. Iyo haiite kana kuora nyore nyore munzvimbo dzakaoma, uye yakagadzikana lanthanum uye zirconium oxides haina kunaka kwezvakatipoteredza.
● Kuderera kweokisijeni:Kusiyana neYSZ, LZO ine yakaderera oksijeni ion diffusivity. Muchivharo chekupisa, izvi zvinobatsira kuderedza oxidation yesimbi iri pasi, kuwedzera hupenyu hwechikamu.
Izvi zvinogadzira lanthanum zirconate yakasarudzika inopisa-inodzivirira ceramic ceramic. Muchokwadi, vaongorori vanosimbisa kuti LZO's "yakanyanya kuderera kupisa conductivity (1.5–1.8 W/m·K pa 1000 °C yechinhu chakakora zvakazara)" mukana wekutanga weTBC application. Mumabatiro anoshanda, iyo porosity inogona kuderedza conductivity kunyange mberi (dzimwe nguva pasi pe1 W/m·K).
Synthesis uye Material Mafomu
Lanthanum zirconate inowanzogadzirwa nekusanganisa lanthanum oxide (La₂O₃) uye zirconia (ZrO₂) pakupisa kwakanyanya. Nzira dzakajairika dzinosanganisira solid-state reaction, sol-gel processing, uye co-precipitation. Zvichienderana nemaitiro, hupfu hunoguma hunogona kugadzirwa zvakanaka kwazvo (nano- to micron-scale) kana granulated. Vagadziri vakaita seEpoMaterial vanopa yakasarudzika particle saizi: kubva nanometer hupfu kusvika kune submicron kana granulated particles, kunyange spherical shapes. Kuchena kunokosha mukushanda kwepamusoro-soro; yekutengesa LZO inowanikwa pa99.5-99.99% kuchena.
Nekuti LZO yakagadzikana, iyo mbishi poda iri nyore kubata. Inoratidzika seguruva rakachena rakachena (sezvinoonekwa mumufananidzo wechigadzirwa pazasi). Iyo poda inochengetwa yakaoma uye yakavharwa kudzivirira chero hunyoro adsorption, kunyangwe isinganyungudika mumvura uye acid. Izvi zvekubata zvivakwa zvinoita kuti zvive nyore kushandiswa mukugadzira epamberi ceramics uye machira pasina njodzi dzakakosha.
Muenzaniso Wechinyorwa Form: EpoMaterial's high-purity Lanthanum Zirconate (CAS 12031-48-0) inopiwa sehupfu chena yakagadzirirwa kushandiswa kwemafuta ekupisa. Inogona kugadziridzwa kana doped nemamwe ion kuti tune zvivakwa.
Lanthanum zirconate (La2Zr2O7, LZO) imhando isingawanzo-yepasi zirconate, uye inoshandiswa zvakanyanya mundima dzakawanda sekudzivirira kupisa, kuvharisa inzwi, catalyst material, uye fluorescent material.
Hunhu Hwakanaka & Nekukurumidza Kuburitsa & Kugadzirisa Sevhisi
Nharembozha: +8613524231522(WhatsApp&Wechat)
Email:sales@epomaterial.com
Zvishandiso muPlasma Spray uye Thermal Barrier Coatings
Imwe yeanonyanya kukosha kushandiswa kwelanthanum zirconate yakaita sejasi repamusoro mune thermal barrier coatings (TBCs). TBCs machira akawanda eceramic coatings akaiswa kune akakosha einjini zvikamu (senge turbine blades) kuti azvidzivirire kubva pakupisa kwakanyanya. Yakajairika TBC sisitimu ine simbi yechisungo bhachi uye ceramic topcoat, inogona kuiswa nenzira dzakasiyana senge air plasma spray (APS) kana electron-beam PVD.
Lanthanum zirconate's low thermal conductivity uye kugadzikana kunoita kuti ive yakasimba TBC mumiriri. Kuenzaniswa neyakajairwa YSZ coatings, LZO inogona kumira tembiricha yakakwira ine kushoma kupisa kuyerera musimbi. Nechikonzero ichi, zvidzidzo zvakawanda zvinodana lanthanum zirconate "chivimbiso chemumiriri weTBC application" nekuda kwekudzikira kwayo kwekupisa uye kugadzikana kwepamusoro kwekupisa. Mumashoko akajeka, lanthanum zirconate coating inochengetedza magasi anopisa kunze uye inodzivirira chimiro chepasi kunyange pasi pemamiriro ezvinhu akaoma.
Iyo plasma spray process inonyanya kukodzera kuLa₂Zr₂O₇. Mukupfapfaidza kweplasma, LZO poda inopisa mujeti yeplasma uye inofambiswa pamusoro pepamusoro kuti igadzire ceramic layer. Iyi nzira inogadzira lamellar, porous microstructure iyo inosimudzira insulation. Maererano nezvinyorwa zvechigadzirwa, high-purity LZO powder yakanyatsogadzirirwa "plasma thermal spraying (thermal barrier coating)". Iyo inokonzeresa yekupfeka inogona kugadzirwa (semuenzaniso ine inodzorwa porosity kana doping) kune chaiyo injini kana aerospace zvinodiwa.
Maitiro eTBC anovandudza aerospace uye simba masisitimu: Nekushandisa LZO-based coatings kune zvikamu zveinjini, injini dzendege nematurbine egasi zvinogona kushanda zvakachengeteka patembiricha yepamusoro. Izvi zvinotungamira kune zvakanyanya kupisa uye kubuda kwemagetsi. Mukuita, mainjiniya vakaona kuti maTBC "anochengeta kudziya mukati mekamuri iri kutsva" uye anonatsiridza kupisa kwemafuta uku achideredza kuburitswa. Mune mamwe mazwi, lanthanum zirconate coatings inobatsira kuchengetedza kupisa painodiwa (mukati mekamuri) uye kudzivirira kurasikirwa kwekupisa, saka injini dzinoshandisa mafuta zvakanyanya. Iyi synergy pakati pekuchengetedza zvirinani uye kupisa kwekuchenesa kunosimbisa kukosha kweLZO pakuchenesa simba uye kusimba.
Uyezve, kusimba kweLZO kunowedzera nguva dzekugadzirisa. Kupokana kwayo nekunyungudika uye oxidation inoreva kuti ceramic layer inogara yakasimba kuburikidza nekutenderera kwakawanda kwekupisa. Iyo yakanyatsogadzirwa lanthanum zirconate TBC inogona kuderedza kuburitswa kwehupenyu hwese nekudzikisa kutsiva kwechikamu uye kuderera. Muchidimbu, plasma-yakapfapfaidzwa LZO coatings ndiyo yakakosha inogonesa tekinoroji yeinotevera-chizvarwa yakakwirira-inoshanda turbines uye aero-injini.
Zvimwe Zvishandiso zveMaindasitiri
Kupfuura plasma-yakapfapfaidzwa TBCs, lanthanum zirconate's yakasarudzika zvivakwa zvinowana kushandiswa mumhando dzakasiyana dzeceramics:
● Heat uye Sound Insulation: Sezvakataurwa nevagadziri, LZO inoshandiswa muhuwandu hwekudzivirira zvinhu. Semuenzaniso, porous lanthanum zirconate ceramics inogona kuvhara kupisa kuyerera uku ichideredza ruzha. Aya mapaneru anodzivirira kana mafiber anogona kushandiswa muchoto linings kana zvivakwa zvekuvaka panodiwa kupisa kwepamusoro-soro.
● Catalysis: Lanthanum oxides anozivikanwa catalysts (eg mukunatsa kana kusvibiswa kwekudzivirira), uye chimiro cheLZO chinogona kugamuchira zvinhu zvinokonzera. Mukuita, LZO inogona kushandiswa sechitsigiro kana chikamu mune zvinokonzeresa zvegasi-chikamu chekuita. Kugadzikana kwayo pakupisa kwepamusoro kunoita kuti itaridzike kuita senge syngas kutendeuka kana kurapwa kwemotokari, kunyangwe mienzaniso chaiyo yeLa₂Zr₂O₇ catalysts ichiri kubuda mukutsvaga.
● Optical and Fluorescent Materials: Sezvineiwo, lanthanum zirconate inogona kugadzirwa neashoma-earth ions kugadzira phosphors kana scintillator. Zita rechinhu chacho rinotooneka mune tsananguro dzezvinhu zvefluorescent. Semuyenzaniso, doping LZO ine cerium kana europium inogona kuburitsa yakakwirira-tembiricha-inodzivirira luminescent makristasi ekuvhenekesa kana kuratidza matekinoroji. Simba rayo rakaderera phonon (nekuda kwe oxide bonds) inogona kuita kuti ibatsire mu infrared kana scintillation optics.
● Advanced Electronics: Mune mamwe maapplication akasarudzika, lanthanum zirconate films anodzidzwa se low-k (low dielectric) insulators kana diffusion barriers mumicroelectronics. Kugadzikana kwayo mumhepo ine oxidizing uye pakakwirira voltages (nekuda kwepamusoro bandgap) inogona kupa mabhenefiti pamusoro peakajairwa okisidhi munzvimbo dzakaomarara dzemagetsi.
● Kucheka Zvishandiso uye Zvipfeko Zvokupfeka: Kunyange zvazvo zvisingawanzoitiki, kuoma kweLZO uye kushorwa kwekushisa kunoreva kuti inogona kushandiswa sechidziviriro chakaoma chekudzivirira pazvishandiso, zvakafanana nemashandisirwo akaitwa mamwe machira eceramic pakupfeka.
Iko kuita kwakasiyana-siyana kweLa₂Zr₂O₇ kunobva pairi kuve ceramic inosanganisa isingawanzo-yepasi chemistry nekuoma kwe zirconia. Icho chikamu chechimiro chakafara che "zvisingawanzo pasi zirconate" ceramics (segadolinium zirconate, ytterbium zirconate, nezvimwewo) zvakagadzirirwa niche yepamusoro-tembiricha mabasa.
Mabhenefiti Ezvakatipoteredza uye Nekubudirira
Lanthanum zirconate inobatsira pakusimudzira kunyanya kuburikidza nekushanda kwesimba uye hupenyu hurefu. Seye insulator yekupisa, inobvumira michina kuti iwane kuita kwakafanana nemafuta mashoma. Semuenzaniso, kupfekedza turbine blade neLZO kunogona kuderedza kupisa kudonha uye nekudaro kunatsiridza kushanda kweinjini. Kudzikiswa kwemafuta ekutsva kunoshandura zvakananga kudzikisa CO₂ uye NOₓ kubuda pachikamu chesimba. Mune imwe ongororo ichangoburwa, kushandisa LZO machira muinjini yekupisa yemukati ine biofuel yakawana yakakwirira mabhureki ekupisa kwemafuta uye zvakanyanya kucheka kuburitsa kabhoni monoxide. Magadzirirwo aya ndiwo chaiwo marudzi ebudiriro inotsvakwa mudhiraivha yekufambisa dzakachena uye masisitimu emagetsi.
Iyo ceramic pachayo ikemikari inert, zvinoreva kuti haiburitse zvinokuvadza ne-zvigadzirwa. Kusiyana neorganic insulators, haiburitse makomisheni akashata pakupisa kwakanyanya. Muchokwadi, kugadzikana kwayo kwepamusoro-tembiricha inotoita kuti ive yakakodzera kune mafuta ari kubuda uye nharaunda (semuenzaniso kupisa kwehydrogen). Chero budiriro inopihwa neLZO mumaturbine kana jenareta inosimudzira mabhenefiti ehutsi akachena.
Kurarama kwenguva refu uye kuderedzwa tsvina: Kupokana kweLZO pakuora (sintering uye oxidation kuramba) zvinoreva zvakare hupenyu hurefu hwezvikamu zvakavharwa. Iyo turbine blade ine yakasimba LZO topcoat inogona kuramba ichishandiswa kureba kupfuura isina kuvharwa, ichideredza kudiwa kwekutsiva uye nekudaro kuchengetedza zvinhu nesimba mukufamba kwenguva. Uku kusimba kunobatsira kwezvakatipoteredza, sezvo kugadzirwa kushoma kunodiwa.
Zvisinei, zvakakosha kufunga nezverare-earth element. Lanthanum inyika isingawanikwe, uye sezvinhu zvese zvakadaro, migodhi nekuraswa kwayo kunomutsa mibvunzo yekusagadzikana. Kana ikasabatwa nemazvo, kucherwa kwepasi zvisingawanzoitiki kunogona kukonzera kukanganisa kwezvakatipoteredza. Ongororo ichangoburwa inocherekedza kuti lanthanum zirconate coatings "ine zvisingawanzo zvinhu zvepasi, izvo zvinosimudzira kusimba uye chepfu kunetseka kunoenderana neashoma pasi migodhi uye kuraswa kwezvinhu". Izvi zvinosimbisa kukosha kwekutsvagisa zvine hungwaru kweLa₂Zr₂O₇ uye nzira dzinogona kudzokorodza dzemachira akashandiswa. Makambani mazhinji ari muchikamu chezvigadzirwa zvepamberi (kusanganisira epomaterial suppliers) anorangarira izvi uye anosimbisa kuchena uye kuderedza marara mukugadzira.
Muchidimbu, mambure ezvakatipoteredza ekushandisa lanthanum zirconate anowanzo akanaka kana kushanda kwayo uye hupenyu hwehupenyu hunobatsira. Nekugonesa kupisa kwakachena uye midziyo inogara kwenguva refu, LZO-yakavakirwa ceramics inogona kubatsira maindasitiri kusangana negirinhi simba zvinangwa. Kutarisirwa kwekutonga kwehupenyu hwezvinhu chinhu chakakosha chekutarisa.
Ramangwana Outlook uye Trends
Tichitarisa kumberi, lanthanum zirconate yagadzirira kukura mukukosha sezvo kugadzira kwepamberi uye yakachena-tech ichiramba ichishanduka:
● Next-Generation Turbines:Sezvo ndege nema turbines emagetsi zvichisundira kudziya kwepamusoro kwekushanda (kwekuita zvakanaka kana kuchinjika kune mamwe mafuta), TBC zvinhu zvakaita seLZO zvichave zvakakosha. Pane tsvakiridzo inoenderera mberi mune akawanda-layer coatings apo layer yelanthanum zirconate kana doped LZO inogara pamusoro peyakajairika YSZ layer, ichibatanidza zvakanakisa zvivakwa zvechimwe nechimwe.
● Muchadenga uye Dziviriro:Iyo inomira nemwaranzi inopokana (inocherechedzwa mune zvimwe zvidzidzo) inogona kuita kuti itaridzike kune nzvimbo kana yenyukireya kudzivirira zvikumbiro. Kugadzikana kwayo pasi pe particle irradiation inzvimbo yekuongorora inoshanda.
● Midziyo inoshandura magetsi:Nepo LZO isiri yechinyakare electrolyte, kumwe kutsvagisa kunoongorora zvine chekuita nelanthanum-based materials mune yakasimba-oxide mafuta masero uye electrolysis masero. (Kazhinji, La₂Zr₂O₇ inoumba isingazivi pamusangano we lanthanum cobaltite electrodes uye YSZ electrolytes.) Izvi zvinoratidza kuwirirana kwayo nemamiriro ezvinhu akaoma emagetsi emagetsi, izvo zvinogona kukurudzira zvitsva zvekugadzirisa thermochemical reactors kana heat exchangers.
● Kugadzirisa Zvinhu:Iko kudiwa kwemusika kweakasarudzika ceramics kuri kuwedzera. Vatengesi ikozvino vanopa kwete chete yakakwirira-kuchena LZO asiwo ion-doped akasiyana (semuenzaniso, kuwedzera samarium, gadolinium, nezvimwewo kuti tikwenye crystal lattice). EpoMaterial inotaura kugona kugadzira "ion doping uye kugadziridza" ye lanthanum zirconate. Doping yakadaro inogona kugadzirisa zvivakwa zvakaita sekuwedzera kwemafuta kana conductivity, zvichibvumira mainjiniya kuti agadzirise iyo ceramic kune chaiyo mainjiniya zvipingaidzo.
● Global Trends:Nekusimbisa kwepasirese pakusimba uye tekinoroji yepamusoro, zvinhu zvakaita selanthanum zirconate zvinokwezva kutarisa. Basa rayo mukugonesa injini dzepamusoro-soro kubatanidza muhuwandu hwehupfumi hwemafuta uye mitemo yemagetsi yakachena. Uyezve, kuvandudzwa kwe 3D kudhinda uye ceramic kugadzirisa kunogona kuita kuti zvive nyore kuumba LZO zvikamu kana machira nenzira itsva.
Muchidimbu, lanthanum zirconate inoratidza maitiro echinyakare kemisitiri kemisitiri inosangana nezvinodiwa zve21st-century. Mubatanidzwa wayo weashoma-yepasi kuita zvinhu zvakasiyana-siyana uye kuoma kweceramic kuri kubatanidza neminda yakakosha: kuenderera mberi kwendege, kugadzirwa kwemagetsi, uye nekupfuura. Sezvo tsvakiridzo ichienderera mberi (ona ongororo ichangoburwa paLZO-based TBCs), zvikumbiro zvitsva zvingangobuda, zvichiwedzera kusimbisa kukosha kwayo mumhando yepamusoro yezvigadzirwa.
Lanthanum zirconate (La₂Zr₂O₇) ndeye ceramic-inoita basa repamusoro-soro rinounza pamwe chete akanakisa epasi-earth oxide chemistry uye advanced thermal insulation. Nekudzika kwayo kwekushisa kwekushisa, kugadzikana kwepamusoro-kudzikama, uye yakasimba pyrochlore chimiro, inonyanya kukodzera kune plasma-sprayed thermal barrier coatings uye mamwe maitiro ekudzivirira. Mashandisiro ayo muaerospace TBCs uye masisitimu emagetsi anogona kuvandudza kushanda zvakanaka uye kuderedza kuburitswa, zvichibatsira kune zvibodzwa zvekusimudzira. Vagadziri vakaita seEpoMaterial vanopa yakakwira-kuchena LZO poda yakanangana neaya ekucheka-kumucheto maapplication. Sezvo maindasitiri epasi rose anosundidzira kusimba rakachena uye zvinhu zvine hungwaru, lanthanum zirconate inomira pachena seyakakosha tekinoroji ceramic - iyo inogona kubatsira kuchengetedza injini kutonhorera, zvimiro zvakasimba, uye masisitimu akasvibira.
Nguva yekutumira: Jun-11-2025