Crystal kapangidwe kayttrium oxide
Yttrium oxide (Y2O3) ndi woyeraosowa nthaka okusayidiwosasungunuka m'madzi ndi alkali ndi kusungunuka mu asidi. Ndi mtundu wa C-rare earth sesquioxide wokhala ndi thupi lokhazikika la cubic.
Crystal parameter tebulo laY2O3
Chithunzi cha Crystal Structure cha Y2O3
Thupi ndi mankhwala katundu wayttrium oxide
(1) kulemera kwa molar ndi 225.82g/mol ndipo kachulukidwe ndi 5.01g/cm3;
(2) Kusungunuka mfundo 2410 ℃, kuwira mfundo 4300 ℃, zabwino matenthedwe bata;
(3) Kukhazikika kwathupi ndi mankhwala komanso kukana bwino kwa dzimbiri;
(4) Thermal conductivity ndipamwamba, yomwe imatha kufika 27 W / (MK) pa 300K, yomwe ili pafupi kawiri kutenthetsa kwa yttrium aluminium garnet (Y3Al5O12), yomwe imapindulitsa kwambiri kugwiritsidwa ntchito kwake ngati sing'anga yogwirira ntchito ya laser;
(5) Mawonekedwe owoneka bwino ndi otakata (0.29 ~ 8μm), ndipo ma transmittance of theoretical m'dera lowoneka amatha kufikira oposa 80%;
(6) Mphamvu ya phonon ndi yochepa, ndipo nsonga yamphamvu kwambiri ya Raman sipekitiramu ili pa 377cm.-1, zomwe zimapindulitsa kuchepetsa kuthekera kwa kusintha kosasunthika ndikuwongolera kusinthika kowala bwino;
(7) Pansi pa 2200 ℃, Y2O3ndi kiyubiki gawo popanda birefringence. Refractive index ndi 1.89 pamtunda wa 1050nm. Kusintha mu gawo la hexagonal pamwamba pa 2200 ℃;
(8) Kusiyana kwa mphamvu kwa Y2O3ndi yotakata kwambiri, mpaka 5.5eV, ndipo mulingo wamphamvu wa ma ion opepuka amtundu wa doped trivalent rare earth uli pakati pa gulu la valence ndi band conduction ya Y.2O3ndi pamwamba pa Fermi mphamvu mlingo, motero kupanga discrete luminescent malo.
(9)Y2O3, monga matrix, imatha kutengera ma ion amitundu yosowa kwambiri padziko lapansi ndikulowa m'malo mwa Y.3+ions popanda kuchititsa kusintha kwa kamangidwe.
Ntchito zazikulu zayttrium oxide
Yttrium oxide, monga zowonjezera zowonjezera, zimagwiritsidwa ntchito kwambiri pamagulu a mphamvu ya atomiki, mlengalenga, fulorosisi, zamagetsi, zida zamakono zamakono ndi zina zotero chifukwa cha zinthu zake zabwino kwambiri zakuthupi monga kukhazikika kwa dielectric, kutentha kwabwino komanso kukana kwamphamvu kwa dzimbiri.
Gwero la zithunzi: Network
1,Monga matrix a phosphor, amagwiritsidwa ntchito powonetsa, kuyatsa ndi kuyika chizindikiro;
2, Monga laser sing'anga zakuthupi, ziwiya zadothi mandala ndi ntchito mkulu kuwala akhoza kukonzekera, amene angagwiritsidwe ntchito ngati sing'anga laser ntchito kuzindikira chipinda kutentha laser linanena bungwe;
3,Monga matrix osinthika a luminescent, amagwiritsidwa ntchito pozindikira infuraredi, kulemba zilembo za fluorescence ndi magawo ena;
4, Zopangidwa kukhala zoumba zowonekera, zomwe zitha kugwiritsidwa ntchito ngati magalasi owoneka ndi owoneka bwino, machubu otulutsa mpweya wothamanga kwambiri, ma ceramic scintillators, mazenera owonera ng'anjo yotentha kwambiri, ndi zina zambiri.
5, Itha kugwiritsidwa ntchito ngati chotengera chotengera, zinthu zosagwira kutentha kwambiri, zinthu zokanira, etc.
6, Monga zopangira kapena zowonjezera, zimagwiritsidwanso ntchito kwambiri pakutentha kwapamwamba kwambiri, zida za laser crystal, zoumba zoumba, zida zothandizira, zoumba za dielectric, ma aloyi ochita bwino kwambiri ndi magawo ena.
Kukonzekera njira yayttrium oxideufa
Njira yamadzimadzi yamadzimadzi imagwiritsidwa ntchito pokonzekera ma oxides osowa padziko lapansi, omwe makamaka amaphatikiza njira ya mpweya wa oxalate, njira ya ammonium bicarbonate mpweya, njira ya urea hydrolysis ndi njira ya ammonia. Kuphatikiza apo, kupopera mbewu mankhwalawa ndi njira yokonzekera yomwe yakhudzidwa kwambiri pakadali pano. Njira yothira mchere
1. oxalate mpweya njira
Theosowa nthaka okusayidiyokonzedwa ndi njira ya oxalate precipitation ili ndi ubwino wa digiri yapamwamba ya crystallization, mawonekedwe abwino a kristalo, kuthamanga mofulumira kusefera, zonyansa zochepa komanso ntchito yosavuta, yomwe ndi njira wamba yokonzekera chiyero chachikulu.osowa nthaka okusayidimu kupanga mafakitale.
Njira yothetsera ammonium bicarbonate
2. Njira ya ammonium bicarbonate mpweya
Ammonium bicarbonate ndi mtengo wotsika mtengo. M'mbuyomu, anthu nthawi zambiri ankagwiritsa ntchito njira ya ammonium bicarbonate kuti akonze mbiya ya carbonate yosakanikirana kuchokera ku njira yothira madzi a miyala yapadziko lapansi. Pakadali pano, ma oxides osowa padziko lapansi amakonzedwa ndi njira ya mpweya wa ammonium bicarbonate m'makampani. Nthawi zambiri, njira ya mpweya wa ammonium bicarbonate ndikuwonjezera ammonium bicarbonate olimba kapena yankho mu njira yosowa yapadziko lapansi ya chloride pa kutentha kwina, Kukalamba, kuchapa, kuyanika ndi kuyaka, okusayidiyo amapezedwa. Komabe, chifukwa cha kuchuluka kwa thovu lomwe limapangidwa panthawi yamvula ya ammonium bicarbonate komanso kusakhazikika kwa pH panyengo yamvula, kuchuluka kwa ma nucleation kumakhala kofulumira kapena pang'onopang'ono, zomwe sizikugwirizana ndi kukula kwa kristalo. Kuti tipeze okusayidi ndi abwino tinthu kukula ndi morphology, zimene zinthu ayenera mosamalitsa ankalamulira.
3. Kugwa kwa urea
Urea mpweya njira chimagwiritsidwa ntchito pokonza osowa Earth okusayidi, amene si wotchipa ndi yosavuta kugwiritsa ntchito, komanso ali ndi kuthekera kukwaniritsa molondola kalambulabwalo nucleation ndi tinthu kukula, kotero urea mpweya njira yakopa anthu ambiri. kuyanjidwa ndi kukopa chidwi chachikulu ndi kafukufuku kuchokera kwa akatswiri ambiri pakali pano.
4. Utsi granulation
Ukadaulo wautsi wa granulation uli ndi zabwino zake zokha zokha, kupanga bwino kwambiri komanso mtundu wapamwamba wa ufa wobiriwira, chifukwa chake kutsitsi kwa granulation kwakhala njira yodziwika bwino yopangira ufa.
M'zaka zaposachedwapa, kumwadziko losowam'minda yachikhalidwe sichinasinthe kwenikweni, koma kugwiritsa ntchito kwake muzinthu zatsopano kwawonjezeka mwachiwonekere. Monga zinthu zatsopano,nano Y2O3ali ndi gawo lalikulu la ntchito. Masiku ano, pali njira zambiri zokonzekera nano Y2O3zipangizo, amene akhoza kugawidwa m'magulu atatu: madzi gawo njira, mpweya gawo njira ndi olimba gawo njira, mwa njira yamadzimadzi gawo ndi ambiri amagwiritsidwa ntchito.They anawagawa kutsitsi pyrolysis, hydrothermal synthesis, microemulsion, Sol-gel osakaniza, kuyaka. kaphatikizidwe ndi mvula. Komabe, spheroidizedyttrium oxide nanoparticlesadzakhala ndi apamwamba enieni pamwamba, mphamvu pamwamba, fluidity bwino ndi disperity, amene ndi ofunika kuganizira.
Nthawi yotumiza: Aug-16-2021