Zirconium silicide, ZrSi2

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Zirconium silicide, ZrSi2

zirconium disilicate feem ntau yog siv rau hauv cov hlau ceramics, siab kub oxidation tiv taus txheej, siab kub txheej txheem cov ntaub ntawv, aerospace thiab lwm cov teb


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Cov mis mos molecular  7rsi2
Tus lej CAS  12039-90-6
Kev piav qhia  grey hmoov
Melting Point 1620.C
Ntawm daim card  4.88 g / cm3
Thov  zirconium disilicate siv nyob rau hauv cov hlau ceramics, cov xim kub oxidationresistant txheej, hightemperature yam ntxwv cov ntaub ntawv, aerospace thiab lwm cov teb

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Zirconium silicide
Molecular phaus: 147.39
EINECS : 234-911-1
CAS : 12039-90-6
Cim: grey square crystalline hmoov
Qhov ceev (g / ml, 25 ℃): 4.88
Melting point (OC): 1620
Lattice constants: a = 0.372nm, B = 1.476nm, C = 0.367nm.
Microhardness (kg / mm2): 1063
Tshav kub ntawm kev tsim (kJ / mol): 62.8
Muaj nuj nqi thiab daim ntawv thov: siv los ua cov khoom siv raw ntawm cov hmoov zoo nkauj, crucible rau ntau lawm ntawm semiconductor film, carbon ceramic nres pad thiab nres disc. Qhov loj feem ntawm zirconium disilicide yog 10-15%. Ntxiv qhov feem ntawm huab hwm coj ntawm zirconium disilicide rau hauv cov ceramic matrix sib xyaw ua ke tuaj yeem txo qhov sintering kub ntawm cov ntaub ntawv.
Kev kawm txog kev ywj pheej thiab anisotropy ntawm zirconium silicide
Lub tebchaw tsim los ntawm cov hlau thiab silicon yog hlau silicides, uas tuaj yeem faib ua ob pawg: 1. Refractory hlau silicides hais txog lub rooj ntu sij hawm IVB, VB, Cov silicides ntawm VIB pawg hais, xws li titanium silicide, zirconium silicide, tantalum silicide , tungsten silicide, thiab lwm yam., 2 zoo zoo nkauj hlau thiab ze ze hlau zoo silicide, lub hom phiaj tua phom, platinum silicide, cobalt silicide, thiab lwm yam hauv ib lo lus, hlau silicide yog qhov nyuaj cov khoom siv nrog cov lus hlau, siab conductivity, zoo kuj thiab av noo coefficient, thiab cov khoom sib nqus thiab refractory hlau silicide nyob rau hauv Feem ntau Nws muaj siab melting taw tes, hardness thiab compressive zog, siab creep lub zog ntawm qhov kub, nruab nrab ceev, tensile lub zog thiab zoo kub hloov khoom.
Cov tshuaj tiv thaiv ntawm cov hlau thiab silicon txo cov haujlwm ntawm cov hlau.
Yog li ntawd, cov tshuaj lom neeg ruaj khov ntawm silicides yog qhov zoo heev. Cov tsis kam cuam tshuam txog cov hlau silicides nrog cov ntsiab lus siab silicon muaj qhov zoo corrosion thiab oxidation tsis kam nyob rau hauv chav tsev kub thiab siab kub Qhov tsis zoo ntawm cov tshuaj: nws yog nkig ntawm chav tsev kub, tsis tshua muaj kev cuam tshuam toughness thiab tsis txaus thermal shock tsis kam. Lub cev nqaij daim tawv thiab tshuaj lom neeg ntawm cov hlau silicides tso rau lawv siv ntau yam. Ua ntej tshaj plaws, silicides raws li cov cuab yeej hluav taws kub kub cov ntaub ntawv muaj qhov ua tau zoo kev cia siab hauv kev tsav dav hlau, chaw dav hlau, tshuaj lom neeg kev lag luam. Raws li high-temperature oxidation resistant txheej, cov ntaub ntawv sib nqus, daim hlau hluav taws xob sib xyaw thiab lwm cov ntaub ntawv ua haujlwm, silicides tau dav kawm thiab siv. Piv txwv li, fe2si xaj alloy muaj zoo heev Cov khoom sib nqus tau zoo, dav siv hauv suab, video thiab hlau nplaum taub hau cov ntaub ntawv rau daim npav nyeem ntawv; xws li v2si, CoSi2, Mo2Si, vim nws cov hluav taws xob zoo heev, v2si yog thawj superconductive A15 theem pom, nws qhov kev hloov pauv tseem ceeb yog 17.1k; MoSi2 yog dav siv raws li cov cua kub ntawm lub siab kub hluav taws xob ua kom sov vim tias nws cov kev coj zoo thiab zoo tshaj plaws oxidation tsis zoo Ib yam li cov kub tiv thaiv oxidation-resistant txheej siv hauv aerospace, hlau silicide ua lub luag haujlwm tseem ceeb hauv kev tsim cov khoom siv hluav taws xob. Vim tias kev tiv thaiv cov tshuaj tua kab ntawm cov tshuaj tua kab yog tsawg dua li ntawm polysilicon, thiab qhov sib cuam tshuam ntawm silicide thiab silicon substrate yog atomic qib huv interface nrog kev sib raug zoo, nws tau siv dav ua Schottky barrier thiab kev sib txuas ntawm cov khoom hauv microelectronic kev lag luam kev lag luam.


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