Lutetium oxideyog ib qho kev cog lus refractory khoom vim nws kub tsis kam, corrosion kuj, thiab tsawg phonon zog. Tsis tas li ntawd, vim nws homogeneous xwm, tsis muaj theem hloov hauv qab lub melting point, thiab siab structural kam rau ua, nws plays ib tug tseem ceeb luag hauj lwm nyob rau hauv catalytic cov ntaub ntawv, magnetic ntaub ntawv, optical iav, laser, electronics, luminescence, superconductivity, thiab high-zog hluav taws xob hluav taws xob. kuaj pom. Piv nrog rau cov ntaub ntawv ib txwm siv,lutetium oxidecov ntaub ntawv fiber ntau nthuav tawm qhov zoo xws li kev ua kom muaj zog ultra-muaj zog, siab dua laser kev puas tsuaj rau qhov pib, thiab kev sib kis bandwidth ntau dua. Lawv muaj cov ntawv thov dav dav hauv thaj chaw ntawm lub zog lasers thiab cov khoom siv hluav taws xob kub. Txawm li cas los xij, txoj kab uas hla ntevlutetium oxidefibers tau los ntawm cov txheej txheem ib txwm muaj feem ntau loj dua (> 75 μ m) Qhov kev hloov pauv tsis zoo, thiab tsis muaj cov ntaub ntawv qhia txog kev ua haujlwm siab.lutetium oxidetsis tu ncua fibers. Vim li no, xibfwb Zhu Luyi thiab lwm tus los ntawm Shandong University sivlutetiummuaj cov organic polymers (PALu) ua ntej, ua ke nrog qhuav spinning thiab cov txheej txheem kho cua sov tom qab, kom tawg los ntawm lub fwj ntawm kev npaj siab-zog thiab nplua-inch saj zawg zog lutetium oxide txuas ntxiv fibers, thiab ua tiav kev tswj tau ntawm kev ua haujlwm siab.lutetium oxidetsis tu ncua fibers.
Daim duab 1 Qhuav spinning txheej txheem ntawm nruamlutetium oxidefibers
Qhov kev ua haujlwm no tsom mus rau kev puas tsuaj ntawm cov txheej txheem ua ntej ntawm cov txheej txheem ceramic. Pib los ntawm cov kev cai ntawm precursor decomposition daim ntawv, ib tug tshiab txoj kev ntawm siab pab dej vapor pretreatment yog npaj. Los ntawm kev kho lub pretreatment kub kom tshem tawm cov organic ligands nyob rau hauv daim ntawv ntawm molecules, qhov kev puas tsuaj rau lub fiber qauv thaum lub sij hawm cov txheej txheem ceramic yog heev zam, yog li xyuas kom meej lub continuation ntawm.lutetium oxidefibers. Exhibiting zoo heev mechanical zog. Kev tshawb fawb tau pom tias nyob rau hauv kev kho mob qis dua, cov precursors muaj feem ntau yuav raug cov tshuaj tiv thaiv hydrolysis, ua rau nto wrinkles ntawm cov fibers, ua rau ntau cov kab nrib pleb nyob rau saum npoo ntawm ceramic fibers thiab ncaj pulverization ntawm macro qib; Qhov kub ua ntej kev kho mob ntau dua yuav ua rau cov precursor crystallize ncaj qha rau hauvlutetium oxide, ua rau cov qauv fiber ntau tsis sib xws, ua rau muaj fiber ntau brittleness thiab luv luv; Tom qab kev kho mob ua ntej ntawm 145 ℃, cov qauv fiber ntau yog ntom ntom ntom ntom ntom ntom ntom ntom ntom. Tom qab kev kho cua sov kub, lub macroscopic yuav luag pob tshab tas lilutetium oxidefiber nrog ib txoj kab uas hla ntawm 40 tau ua tiav μ M.
Daim duab 2 Optical duab thiab SEM dluab ntawm preprocessed precursor fibers. Pretreatment kub: (a, d, g) 135 ℃, (b, e, h) 145 ℃, (c, f, i) 155 ℃
Daim duab 3 Optical photo of nruamlutetium oxidefibers tom qab kev kho mob ceramic. Pretreatment kub: (a) 135 ℃, (b) 145 ℃
Daim duab 4: (a) XRD spectrum, (b) optical microscope duab, (c) thermal stability thiab microstructure ntawm nruamlutetium oxidefibers tom qab kev kho kub kub. Kev kho cua sov: (d, g) 1100 ℃, (e, h) 1200 ℃, (f, i) 1300 ℃
Tsis tas li ntawd, qhov kev ua haujlwm no tshaj tawm thawj zaug lub zog tensile, elastic modulus, yooj, thiab kub tsis kam ntawm kev nruamlutetium oxidefibers. Lub zog tensile ib leeg yog 345.33-373.23 MPa, elastic modulus yog 27.71-31.55 GPa, thiab qhov kawg curvature vojvoog yog 3.5-4.5 hli. Txawm tias tom qab kev kho cua sov ntawm 1300 ℃, tsis muaj qhov txo qis hauv cov khoom siv hluav taws xob ntawm cov fibers, uas ua pov thawj tias qhov kub thiab txias tsis tu ncua.lutetium oxidefibers npaj nyob rau hauv no ua hauj lwm yog tsis tsawg tshaj li 1300 ℃.
Daim duab 5 Mechanical properties of nruamlutetium oxidefibers. (a) Stress-strain nkhaus, (b) tensile zog, (c) elastic modulus, (df) qhov kawg curvature radius. Kev kho cua sov: (d) 1100 ℃, (e) 1200 ℃, (f) 1300 ℃
Txoj haujlwm no tsis tsuas yog txhawb nqa kev thov thiab kev txhim kho ntawmlutetium oxidenyob rau hauv high-temperature structural cov ntaub ntawv, high-zog lasers, thiab lwm yam teb, tab sis kuj muab cov tswv yim tshiab rau kev npaj ntawm high-performance oxide nruam fibers.
Post lub sij hawm: Nov-09-2023