Ubume bekristale be-yttrium oxide
I-Yttrium oxide (Y2O3) yioksidi yomhlaba emhlophe enqabileyo enganyibilikiyo emanzini kunye nealkali kwaye inyibilika kwiasidi.Luhlobo lwe-C oluqhelekileyo lwe-sesquioxide yomhlaba kunye nesakhiwo se-cubic esigxile kumzimba.
Itafile yeparamitha yeCrystal yeY2O3
ISakhiwo seCrystal Diagram ye-Y2O3
Iimpawu ezibonakalayo kunye neekhemikhali ze-yttrium oxide
(1) ubunzima bemolar yi-225.82g/mol kunye noxinzelelo yi-5.01g/cm3;
(2) Indawo yokunyibilikisa i-2410℃, indawo ebilayo 4300℃, ukuzinza okuhle kwe-thermal;
(3) Uzinzo olulungileyo lomzimba kunye neekhemikhali kunye nokuchasana nokugqwala okuhle;
(4) I-thermal conductivity iphezulu, enokufikelela kwi-27 W / (MK) kwi-300K, malunga nokuphindwe kabini i-thermal conductivity ye-yttrium aluminium garnet (Y3Al5O12), enenzuzo kakhulu ekusebenziseni kwayo njengendlela yokusebenza ye-laser;
(5) Uluhlu lwe-optical transparency lubanzi (0.29 ~ 8μm), kwaye ukuhanjiswa kwethiyori kummandla obonakalayo kunokufikelela ngaphezu kwe-80%;
(6) Amandla ephonon aphantsi, kwaye eyona ncopho inamandla yeRaman spectrum ikwi-377cm.-1, enenzuzo ekunciphiseni ukuba nokwenzeka kokutshintshwa kwe-radiative kunye nokuphucula ukuguqulwa kokukhanya okukhanyayo;
(7) Ngaphantsi kwe-2200℃, Y2O3sisigaba cubic ngaphandle birefringence.Isalathisi se-refractive yi-1.89 kwi-wavelength ye-1050nm.Ukutshintshela kwisigaba esine-hexagonal ngaphezulu kwe-2200℃;
(8) Umsantsa wamandla kaY2O3ibanzi kakhulu, ukuya kuthi ga kwi-5.5eV, kunye nenqanaba lamandla leeyoni ezikhanyisayo ezinqabileyo ezinqabileyo zomhlaba ziphakathi kwebhendi yevalence kunye nebhendi yokuqhuba yeY.2O3kwaye ngaphezu kwenqanaba lamandla eFermi, ngaloo ndlela kwakheka amaziko okukhanya okukhanyayo.
(9)Y2O3, njengemathiriyeli yematrix, inokwamkela ukuxinana okuphezulu kwee-ion zomhlaba ezinqabileyo ezinqabileyo kwaye zithathe indawo kaY3+ion ngaphandle kokubangela utshintsho lwesakhiwo.
Ukusetyenziswa okuphambili kweyttrium oxide
I-Yttrium oxide, njengento eyongezelelweyo esebenzayo, isetyenziswa ngokubanzi kwimimandla yamandla e-athomu, i-aerospace, i-fluorescence, i-electronics, i-ceramics yobuchwepheshe obuphezulu kunye nokunye ngenxa yeempawu zayo ezibalaseleyo ezifana ne-dielectric constant, ukumelana nobushushu obuhle kunye ne-corrosion enamandla. ukuxhathisa.
Umthombo womfanekiso: Inethiwekhi
1, Njengesixhobo se-phosphor matrix, isetyenziswa kwimimandla yokubonisa, ukukhanyisa kunye nokumakisha;
I-2, Njengesixhobo se-laser medium, ii-ceramics ezicacileyo ezinomsebenzi ophezulu we-optical zingalungiswa, ezinokuthi zisetyenziswe njenge-laser yokusebenza medium ukuqonda ubushushu begumbi lokuphuma kwe-laser;
3, Njengesixhobo sematriki esikhanyisayo soguqulo oluphezulu, sisetyenziswa ekubhaqweni kwe-infrared, ukuleyibheli kwe-fluorescence kunye nezinye iindawo;
I-4, Yenziwe kwi-ceramics ecacileyo, engasetyenziselwa iilensi ezibonakalayo kunye ne-infrared, iityhubhu zokukhutshwa kwegesi ephezulu yoxinzelelo, i-ceramic scintillators, iifestile zokujonga iziko lobushushu obuphezulu, njl.
I-5, Inokusetyenziswa njengesitya sokusabela, izinto ezixhathisa ubushushu obuphezulu, izinto eziphikisayo, njl.
I-6, Njengezinto ezikrwada okanye izongezo, zikwasetyenziswa ngokubanzi kwimathiriyeli ephezulu yobushushu bobushushu obuphezulu, imathiriyeli yekristale yelaser, iiseramikhi zesakhiwo, izixhobo zecatalytic, iiseramics zedielectric, iialloys ezisebenza kakhulu kunye nezinye iindawo.
Indlela yokulungiselela i-yttrium oxide powder
Indlela yokugutyungelwa kwenqanaba lolwelo isoloko isetyenziselwa ukulungisa iioksidi zomhlaba ezinqabileyo, ezibandakanya ikakhulu indlela yokuyimvula ye-oxalate, indlela yokunyisa ye-ammonium bicarbonate, indlela ye-urea hydrolysis kunye ne-ammonia precipitation method.Ukongeza, igranulation yesitshizi ikwayindlela yokulungiselela ebixhalabisa kakhulu ngoku.Indlela yokugalela kwetyuwa
1. indlela yemvula ye-oxalate
I-oxide yomhlaba enqabileyo elungiselelwe yi-oxalate precipitation method ineenzuzo zeqondo eliphezulu le-crystallization degree, ifom ye-crystal enhle, isantya sokuhluza ngokukhawuleza, umxholo ongcolileyo ophantsi kunye nokusebenza okulula, okuyindlela eqhelekileyo yokulungiselela ubunyulu obuphezulu obunqabileyo bomhlaba kwimveliso yemveliso.
Indlela yemvula ye-ammonium bicarbonate
2. Indlela yemvula ye-ammonium bicarbonate
I-Ammonium bicarbonate yi-precipitant enexabiso eliphantsi.Ngaphambili, abantu babedla ngokusebenzisa indlela yemvula ye-ammonium bicarbonate ukulungiselela umxube onqabileyo wekhabhonithi yomhlaba kwisisombululo sentsimbi enqabileyo yomhlaba.Okwangoku, iioksidi zomhlaba ezinqabileyo zilungiswa nge-ammonium bicarbonate precipitation method kushishino.Ngokubanzi, indlela yemvula ye-ammonium bicarbonate kukongeza i-ammonium bicarbonate eqinileyo okanye isisombululo kwisisombululo sekloridi yomhlaba enqabileyo kubushushu obuthile,Emva kokwaluphala, ukuhlamba, ukomisa kunye nokutshisa, ioksidi ifunyenwe.Nangona kunjalo, ngenxa yenani elikhulu lamaqamza avelisiweyo ngexesha lemvula ye-ammonium bicarbonate kunye nexabiso le-pH elingazinzanga ngexesha lokusabela kwemvula, isantya se-nucleation siyakhawuleza okanye sicotha, esingahambelani nokukhula kwekristale.Ukuze ufumane i-oxide kunye nobukhulu be-particle kunye ne-morphology, iimeko zokusabela kufuneka zilawulwe ngokungqongqo.
3. Ukunetha kweUrea
Indlela yemvula ye-Urea isetyenziswa ngokubanzi ekulungiseleleni i-oksidi yomhlaba enqabileyo, engabizi nje kuphela kwaye kulula ukuyisebenzisa, kodwa inamandla okufikelela kulawulo oluchanekileyo lwe-nucleation yangaphambili kunye nokukhula kwamasuntswana, ngoko ke indlela yemvula ye-urea iye yatsala abantu abaninzi ngakumbi. ithande kwaye itsale umdla obanzi kunye nophando oluvela kubaphengululi abaninzi ngoku.
4. Tshaza igranulation
Itekhnoloji ye-spray granulation ineenzuzo ze-automation ephezulu, ukusebenza kakuhle kwemveliso kunye nomgangatho ophezulu womgubo ohlaza, ngoko ke i-spray granulation ibe yindlela eqhelekileyo yokusetyenziswa kwe powder granulation.
Kwiminyaka yakutshanje, ukusetyenziswa komhlaba onqabileyo kwiinkalo zemveli akukatshintshi ngokusisiseko, kodwa ukusetyenziswa kwayo kwizinto ezintsha kuye kwanda ngokucacileyo.Njengesixhobo esitsha, i-nano Y2O3inomhlaba obanzi wesicelo.Namhlanje, kukho iindlela ezininzi zokulungiselela i-nano Y2O3izinto eziphathekayo, ezinokuthi zahlulwe zibe ziindidi ezintathu: indlela yesigaba solwelo, indlela yesigaba segesi kunye nendlela yesigaba esiqinileyo, phakathi kwayo indlela yesigaba solwelo sesona sisetyenziswa kakhulu.Bahlulwe kwi-spray pyrolysis, i-hydrothermal synthesis, i-microemulsion, i-sol-gel, i-combustion. ukudibanisa kunye nemvula.Nangona kunjalo, i-spheroidized yttrium oxide nanoparticles iya kuba nommandla ophakamileyo ophezulu, amandla angaphezulu, i-fluidity engcono kunye ne-dispersity, efanelekile ukugxila kuyo.
Ixesha lokuposa: Aug-16-2021