Silicon Nitride Ceramic yog ib qho ntawm lub ntiaj teb' s cov khoom hnyav tshaj plaws. Nws muaj cov yam ntxwv zoo xws li lub zog loj voltage, tsis tshua muaj kev ntwm, thiab siab ua haujlwm. Nws pib nrog silicon hmoov thiab duab nws conventionally, tom qab ntawd ua cov nitridation ua ntej hauv nitrogen thiab qhov kub ntawm 1,200 ° C, qhov twg ib feem ntawm silicon hmoov sib xyaw nrog nitrogen tsim silicon nitride. Tag nrho lub cev twb muaj qee qhov nqi ntawm lub zog. Tom qab ntawd nws tau nitridated thib ob zaug ntawm qhov kub ntawm 1,350 ° C rau 1,450 ° C hauv qhov cub sov siab thiab cov tshuaj tiv thaiv los ua Silicon Nitride (Si3N4). Kev tsim cov qauv yog kub nias thiab roj siab sintering.

Si3N4 Ceramic yog hom ntawm covalent daim ntawv cog lus compound. Lub [SiN4] tetrahedron yog lub hauv paus txheej txheem qauv. Qhov kev saib xyuas no muaj nqi nrog tus lej ntawm cov khoom ntawm silicon nitride. Kev tsim hluav taws xob ceramic silicon nitride, raws li qhov ua tau zoo ntawm cov khoom siv ntsuas kub siab, yuav siv nws qhov zoo hauv cov ntawv thov siab. Nws muaj zog rau qhov siab tshaj, nrog rau qhov kub txog li 1,200 ° C yam tsis poob nws lub zog, thiab yuav tsis yaj tom qab cua sov. Cov yaj yuav tsis yaj kom txog thaum nws mus txog qhov kub txog 1,900 ° C. Ntawm lwm sab, vim Si3N4' s tsawg theoretical ceev, uas yog sib zog dua cov hlau thiab engineering super tshav kub-resistant alloy steel, nws tuaj yeem siv rau hauv cov hlau alloy qhov twg muaj zog, tsis tshua muaj siab, thiab siab xav tau qhov kub thiab txias. Nws tsis tuaj yeem tsim nyog dua. Tsis tas li ntawd, silicon nitride qhov kub thiab txias ua kom pom cov tshuaj ua xeb ntau tshaj qub, kev tiv thaiv yuav luag txhua yam kev sib xyaw thiab cov kua dej qab zib hauv qab 30%, nrog rau cov xeb ntawm ntau yam ntawm cov organic acids. Nws tseem yog qhov ua tau zoo hluav taws xob insulating nruab nrab.

Silicon nitride yog cov yam ntxwv tseem ceeb. Nws yog qhov tsis tshua muaj siab tawv uas muaj roj nplua nyeem thiab tiv taus hnav. Nrog rau kev zam ntawm hydrofluoric acid, nws yog inert rau feem ntau cov kua qaub inorganic. Nws muaj qhov ua tau zoo tiv thaiv xeb thiab tiv taus siab kub. Kev ua kom mus. Tsis tas li ntawd, nws tiv taus cov teebmeem ntawm no thiab hnub. Nws yuav nyob twj ywm tsis tsum txog txij li tso rau 1,000 ° C hauv huab cua, txias sai, thiab tom qab ntawd ua kom sov. Nws yog qhov tseeb vim tias silicon nitride Si3N4 muaj cov yam ntxwv zoo heev uas feem ntau siv los tsim cov kabmob, cov kabmob pob, cov roj ntsaws hniav, lub tshuab foob lub voj voos, cov pwm tsis tu ncua, cov cua kub, tuber tuber, thermocouple hlab kev nyab xeeb, vuam txuas, thiab cov substrates, ntawm lwm yam.

Cov Khoom Siv Khoom Siv (GPSN)

TSWV YIM	UNITIT	ALUMINA\|A950	ALUMINA\|A990	ZIRCONIA\|YSZ95	SILICON NITRIDE\|GPSN
Cov ntsiab lus tseem ceeb	-	95% Al₂O₃	99% Al₂O₃	ZrO₂GG gt; 94.5%	Si₃N₄GG gt; 95%
Xim	-	Dawb	Ivory	Dawb	Dub
Qhov ceev	g / cm³	3.70	3.85	5.95	3.22
Vickers Hardness	Gpa	14	17	12	15
Lub Neej Ua Tau Zoo	Mpa	310	360	800	580
Hlob Lub Zog	Mpa	2,200	2,500	2,500	2,200
Ntim Tsuav Rov Qab Los	Ω · cm	GG gt; 10¹⁴	GG gt; 10¹⁴	GG gt; 10¹⁰	GG gt; 10¹²
Dielectric Lub Zog	KV / hli	15	17	9	19
Dielectric Tsis tas Li	1 MHz	8	9	28	9.6
Kev Coj Ua Thaum Sov	W/m.K	25	29	2.2	27
Kev Ua Haujlwm Ntau Tshaj.	℃ / ℉	1,500 / 2,730	1,650 / 3,000	600 / 1,100	1,200 / 2,200
Thermal poob siab ua hauj	△T(℃)	210	230	260	750
Coefficient ntawm Thermal Expansion (25 - 1,000 ℃)	10^-6/K	7 - 9	7 - 9	11 - 13	3 - 4

Nco tseg: Txawm hais tias peb tsis muaj laj thawj tsis ntseeg tias qhov tseeb ntawm cov ntaub ntawv hais tawm, cov ntaub ntawv no tsuas yog muab rau kev sib piv nkaus xwb. Cov yam ntxwv tseeb yuav sib txawv raws cov qauv tsim khoom thiab cov qauv ua haujlwm, thiab qee zaum yuav raug txiav raws li qhov tshwj xeeb.

Cov Kev Siv Raug

Projection Vuam

Tsawg Tus Neeg Tuag Caum Casting

Cua Kub Caij

Kabmob& Cov Khoom Pob Pob

Cim npe nrov: silicon nitride ceramic, Tuam Tshoj, cov chaw muag khoom, chaw tsim khoom