SiC Ntxig

SiC ntxig yog ua los ntawm silicon carbide ceramic, uas carbide ceramic hauv cov xim dub. SiC ceramic yog toxicologically muaj kev nyab xeeb thiab tuaj yeem siv rau hauv kev lag luam khoom noj khoom haus. Piv nrog rau lwm cov kev ua tau zoo tshaj plaws hauv qhov chaw sov siab (siab tshaj 1,000 ° C), SiC ceramic muaj cov coj hnav zoo dua thiab txo qis dua kev siv tshuab zog. Vim tias nws muaj zog covalent daim ntawv cog lus, ntawm ntau cov khoom siv technical ceramic, Mohs hardness ntawm SiC ceramic tuaj yeem ncav cuag 9.5, uas yog siab dua qhov feem ntau ntawm kev ua haujlwm ceramics. Yog li, yog tias yuav tsum tau kho polishing, tus nqi yuav siab. Ib qho ntxiv, SiC ntshiab yuav tsis xeb los ntawm kev daws teeb meem acid xws li HCl, HNO3, H2SO4, thiab HF, thiab cov teeb meem alkaline xws li NaOH. Oxidation yog yooj yim tshwm sim thaum rhuab hauv huab cua, tab sis lub SiO2 tsim rau saum npoo yuav inhibit qhov sib txawv ntawm cov pa ntxiv thaum lub zog oxidation, yog li qhov oxidation tsis siab.

SiC ceramic yog tsim los ntawm cov cov ntawv cog lus muaj zog, uas ua rau SiC muaj cov yam ntxwv ntawm kev ua haujlwm siab thermal, zoo thermal stability, thiab cov cuab yeej zoo heev, tab sis nws kuj ua rau nws nyuaj los tsim. Txhawm rau kom muaj lub siab thermal conductivity ntawm SiC ceramic, cov purity siab thiab siab ntom ntawm SiC ceramic yog qhov tseem ceeb. UNIPRETEC tso siab rau xyoo ntawm kev tsim khoom thiab R& D kev paub hauv kev ua haujlwm ntawm SiC ceramics, xaiv cov khoom lag luam muaj cov khoom lag luam zoo nkauj thiab ua ke nrog cov txheej txheem tsim tawm ntawm cov tsis muaj lub siab kom ua cov khoom zoo SiC. Ntau ntawm SiC khob tso tau los ntawm UNIPRETEC, xws li 11mm, 15mm, 19mm, 25mm, 30mm, 3 Grams ... Cov neeg siv khoom hauv cov xav tau zoo siab txais tos tuaj sab laj.

Vim Li Cas Xaiv SiC Ceramic Ntxig

Cov Ntaub Ntawv Ntxiv

Qhov taw qhia tseem ceeb ntawm cov khoom siv ntxig ceramic yog cov thermal conductivity. Thermal conductivity tseem hu ua kub conductivity coefficient, uas yog hais txog qhov muaj peev xwm ntawm cov khoom siv los hloov ncaj qha ntawm lub zog cua sov los ntawm thaj chaw sov rau thaj chaw qis qis. Cov neeg sawv cev ntawm cov ntaub ntawv qib siab ceramic nrog cov thermal conductivity siab dua 100 W / mK yog Beryllium Oxide (BeO), Aluminium Nitride (AlN) thiab Silicon Carbide (SiC). Qhov tsis txaus ntshai ntawm BeO ceramic yog nws lub siab toxicity. Kev nqus tau ntev ntawm BeO hmoov av tuaj yeem ua rau lom thiab ua rau lub neej tsis zoo, thiab ua rau muaj kuab paug rau ib puag ncig, yog li nws tsis tuaj yeem siv los ua qhov ntxig rau txhua qhov. Qhov no yog vim li cas thiaj haum cov khoom siv ceramic yog SiC thiab AlN. Qhov sib piv ntawm AlN thiab SiC, ntawm ib sab, qhov nyuaj ntawm SiC yog qhov siab dua AlN, yog li sab hauv phab ntsa ntawm lub khob ntxig tsis yooj yim rau txhuam. Ntawm qhov tod tes, qhov nruab nrab thermal conductivity ntawm AlN ntawm 170 W / mK yog li 30% siab dua li ntawm SiC ntawm 130 W / mK Txawm li cas los xij, cov khoom siv AlN tsis yooj yim los ua, thiab cov txheej txheem molding tsis loj li SiC Cov. Ntawm tag nrho, tus nqi ntawm ob yog zoo sib xws, thiab ob qho tib si yog qhov kev xaiv tsim nyog rau banger ntxig.

Cim npe nrov: sic ntxig, Tuam Tshoj, cov chaw muag khoom, chaw tsim khoom