Ngwakọta ụwa dị ụkọ dị mkpa: kedu ihe eji ntụ ntụ yttrium oxide?
Ụwa na-adịghị ahụkebe bụ akụ dị mkpa dị oke mkpa, ọ nwekwara ọrụ na-enweghị atụ na mmepụta ụlọ ọrụ mmepụta ihe.Ugogbe ụgbọ ala, resonance magnetik nuklia, eriri anya, ihe ngosi kristal mmiri, wdg enweghị ikewapụ na mgbakwunye nke ụwa na-adịghị ahụkebe.N'ime ha, yttrium (Y) bụ otu n'ime ihe ndị dị n'ụwa na-adịghị ahụkebe na ọ bụ ụdị ọla isi awọ.Otú ọ dị, n'ihi nnukwu ọdịnaya dị n'ime ụwa, ọnụ ahịa dị ọnụ ala ma na-ejikarị ya eme ihe. N'ime mmepụta ọha mmadụ ugbu a, a na-ejikarị ya na steeti yttrium alloy na yttrium oxide.
Ọnụ ego nke Yttrium Metal
N'ime ha, yttrium oxide (Y2O3) bụ ogige yttrium kacha mkpa.Ọ bụ insoluble na mmiri na alkali, soluble na acid, na nwere ọdịdị nke ọcha crystalline ntụ ntụ (ihe owuwu kristal bụ nke cubic usoro).Ọ nwere ezigbo nkwụsi ike nke kemịkalụ ma ọ nọkwa na-ekpo ọkụ.Mgbanwe dị ala, oke ọkụ ọkụ, nkwụsị nke corrosion, dielectric dị elu, nghọta (infrared) na uru ndị ọzọ, ya mere etinyere ya n'ọtụtụ ebe.Gịnị bụ ndị kpọmkwem? Ka anyị lee anya.
Ọdịdị kristal nke yttrium oxide
01 Njikọ nke yttrium kwadoro ntụ ntụ zirconia.Mgbanwe nke usoro a ga-eme n'oge oyi nke ZrO2 dị ọcha site na okpomọkụ dị elu ruo n'ime ụlọ: akụkụ cubic (c) → tetragonal phase (t) → usoro monoclinic (m), ebe t ga-eme na 1150 ° C → m mgbanwe mgbanwe, sonye na mmụba olu nke ihe dịka 5%.Otú ọ dị, ọ bụrụ na t → m na-eme mgbanwe mgbanwe nke ZrO2 na-eme ka ọ kwụsie ike na okpomọkụ dị n'ime ụlọ, mgbanwe nke t → m na-ebute site na nrụgide n'oge loading. N'ihi ụda olu na-emepụta site na mgbanwe nke oge ahụ, a na-etinye nnukwu ike mgbaji. , nke mere na ihe ahụ na-egosipụta ike na-agbaji agbaji na-adịghị mma, nke mere na ihe ahụ na-egosipụta ihe siri ike na-agbaji agbaji, na-eme ka mgbanwe mgbanwe na-agbanwe agbanwe na-eme ka ọ dị elu, na ịdị elu dị elu na nkwụsị elu.mmekọahụ.
Iji nweta mgbanwe mgbanwe na-agbatị nke ceramics zirconia, a ga-agbakwunye ụfọdụ stabilizer na n'okpuru ọnọdụ ịgba ọkụ, oke okpomọkụ kwụsiri ike na-adọ-tetragonal meta-stabilization na ụlọ okpomọkụ, na-enweta usoro tetragonal nke enwere ike gbanwee oge na ụlọ okpomọkụ. .Ọ bụ mmetụta nkwụsi ike nke stabilizers na zirconia.Y2O3 bụ zirconium oxide stabilizer nke a na-enyocha nke ọma ruo ugbu a. The sintered Y-TZP material nwere magburu onwe n'ibu Njirimara na ụlọ okpomọkụ, elu ike, ezi mgbaji siri ike, na ọka size nke ihe onwunwe na mkpokọta bụ obere na edo, ya mere o nwere. dọtara mmasị ọzọ.02 Ihe enyemaka sntering Ngwunye ọtụtụ ceramik pụrụ iche chọrọ nsonye nke ihe enyemaka.Enwere ike kewaa ọrụ nke ihe enyemaka n'ozuzu n'ime akụkụ ndị a: ịmepụta ngwọta siri ike na sinter; gbochie mgbanwe ụdị kristal;na-egbochi uto ọka kristal;mepụta mmiri mmiri na-adọ.Dịka ọmụmaatụ, na nkwụsị nke alumina, a na-agbakwunye magnesium oxide MgO dị ka microstructure stabilizer n'oge usoro nhazi.Ọ nwere ike nụchaa ọka, belata ihe dị iche na ike oke ọka, mee ka anisotropy nke uto ọka belata, ma gbochie uto ọka na-akwụsị.Ebe MgO na-agbanwe nke ukwuu na okpomọkụ dị elu, iji nweta ezigbo nsonaazụ, Yttrium oxide na-ejikọta ya na MgO.Y2O3 nwere ike nụchaa ọka kristal ma kwalite densification sintering.03YAG ntụ ntụ sịntetik yttrium aluminum garnet (Y3Al5O12) bụ ihe mmadụ mere, ọ dịghị ihe ndị sitere n'okike, enweghị agba, ike Mohs nwere ike iru 8.5, ebe agbaze 1950 ℃, insoluble na sulfuric acid, hydrochloric acid, nitric acid, hydrofluoric acid, wdg. usoro usoro siri ike nke okpomọkụ dị elu bụ usoro omenala maka ịkwadebe YAG ntụ ntụ.Dịka nha nke enwetara na ọnụọgụ ọnụọgụ abụọ nke yttrium oxide na aluminum oxide, a na-agwakọta ntụ ntụ abụọ ahụ ma gbaa ọkụ na okpomọkụ dị elu, na YAG ntụ ntụ na-etolite site na siri ike. -mmeghachi omume n'etiti oxides.N'okpuru ọnọdụ okpomọkụ dị elu, na mmeghachi omume nke alumina na yttrium oxide, a ga-ebu ụzọ mepụta mesophases YAM na YAP, n'ikpeazụ, YAG ga-etolite.
Usoro siri ike nke okpomọkụ dị elu maka ịkwadebe ntụ ntụ YAG nwere ọtụtụ ngwa.Dịka ọmụmaatụ, nha njikọ Al-O dị obere na ike nkekọ dị elu.N'okpuru mmetụta nke electrons, ngwa anya arụmọrụ na-anọgidesi ike, na iwebata nke obere ụwa ọcha nwere ike budata mma luminescence arụmọrụ nke phosphor.Na YAG nwere ike ịghọ phosphor site doping na trivalent obere ụwa ion dị ka Ce3+ na Eu3+.Na mgbakwunye, YAG kristal nwere nghọta dị mma, akụrụngwa anụ ahụ na kemịkalụ kwụsiri ike, ike igwe dị elu, yana nguzogide ikuku dị mma.Ọ bụ ihe kristal laser nwere ọtụtụ ngwa na arụmọrụ dị mma.
YAG kristal 04 transperent seramiiki yttrium oxide bụbu ihe a na-elekwasị anya na ngalaba nke seramiki transperent.Ọ bụ nke sistemu kristal cubic ma nwee ngwa anya isotropic nke axis ọ bụla.E jiri ya tụnyere anisotropy nke alumina transperent, ihe oyiyi ahụ na-adịchaghị agbagọ, ya mere, jiri nwayọọ nwayọọ jiri ya kpọrọ ihe ma mepụta ya site na anya anya dị elu ma ọ bụ windo ngwa anya agha.The isi e ji mara nke anụ ahụ na chemical Njirimara bụ: ①Elu agbaze ebe, The chemical na photochemical kwụsie ike dị mma, na ngwa anya transparency nso bụ obosara (0.23 ~ 8.0μm);② Na 1050nm, ndetu refractive ya dị elu dị ka 1.89, nke na-eme ka ọ nwee nnyefe usoro ihe karịrị 80%;③Y2O3 nwere ezuru nabata ọtụtụ The band ọdịiche si ibu conduction band na valence band nke emission larịị nke trivalent obere ụwa ion nwere ike n'ụzọ dị irè ahaziri site doping nke obere ụwa ion. Ya mere, dị ka ịghọta multifunctionalization nke ngwa ya. ;④ Ike phonon dị ala, yana oge nkwụsị nke phonon kacha dị ihe dịka 550cm-1.Ike phonon dị ala nwere ike igbochi ohere nke mgbanwe na-abụghị nke radieshon, mee ka ohere nke mgbanwe radieshon dịkwuo elu, ma melite arụmọrụ quantum luminescence;⑤ High thermal conductivity, banyere 13.6W / (m·K), elu thermal conductivity bụ nke ukwuu.
dị mkpa maka ya dị ka ihe siri ike laser ọkara ihe.
ceramik transperent Yttrium oxide nke ụlọ ọrụ Kamishima nke Japan mepụtara
The agbaze ebe Y2O3 bụ banyere 2690 ℃, na sintering okpomọkụ na ụlọ okpomọkụ bụ banyere 1700 ~ 1800 ℃.Iji mee ceramik na-enye ọkụ, ọ kacha mma iji ịpị ọkụ na sintering.N'ihi ọmarịcha anụ ahụ na kemịkal ya, a na-eji seramiki transperent Y2O3 eme ihe n'ọtụtụ ebe ma nwee ike mepụta ya, gụnyere: windo infrared ngwa ọgụ na ụlọ, anya anya anya na infrared, oriọna na-agbapụta gas dị elu, ceramic scintilators, seramiiki lasers na ubi ndị ọzọ.
Oge nzipu: Nov-25-2021