Khoom Description

Hauv kev ntsuas kub ntawm kev lag luam thiab kev tiv thaiv - corrosion, kev xaiv ntawm cov khoom siv tiv thaiv yog ncaj qha ntsig txog cov khoom siv lub neej thiab cov txheej txheem kev nyab xeeb. Tau ntsib cov kev ua haujlwm hnyav ntawm cov kua qaub uas muaj zog, qhov kub thiab txias, lossis kev kub siab, tantalum tiv thaiv raj thiab cov raj tiv thaiv ceramic sawv cev rau ob txoj kev sib txawv kiag li.

Tantalum yog ib qho tsis tshua muaj hlau refractory uas nws qhov zoo tshaj plaws nyob rau hauv nws qhov kawg corrosion kuj. Tantalum qhia tau hais tias yuav luag tsis muaj zog rau cov xov xwm muaj zog xws li hydrochloric acid, concentrated nitric acid, aqua regia thiab aqua regia nyob rau hauv chav tsev kub, ua tsaug rau nws ntom thiab nws tus kheej - kho oxide zaj duab xis rau saum npoo. Hauv cov xwm txheej uas cuam tshuam txog kev thauj mus los lossis cov tshuaj tiv thaiv ntawm cov kua qaub uas muaj zog, xws li kev lag luam tshuaj thiab tshuaj, tantalum cov raj tiv thaiv yuav luag tsis tuaj yeem hloov tau, thiab lawv lub neej ntev tshaj li ntawm cov hlau tsis muaj steel thiab txawm tias qee cov nickel kim heev -raws li alloys.

Ceramic tiv thaiv raj (xws li alumina, zirconia, thiab silicon carbide cov ntaub ntawv) cia siab rau cov tshuaj inertness ntawm inorganic non{0}}hlau. Nws muaj corrosion kuj zoo heev rau feem ntau cov kua qaub thiab alkalis thiab tshwj xeeb tshaj yog ruaj khov nyob rau hauv siab -kub oxidizing atmospheres. Txawm li cas los xij, muaj qhov pom tseeb "ua tsis tau" hauv kev tiv thaiv corrosion ntawm ceramics: nws tsis tuaj yeem tiv taus ntev - lub sij hawm yaig los ntawm hydrofluoric acid thiab muaj zog alkali, thiab nws tsis muaj zog alkali daws tsis muaj zog.

Nyob rau hauv complex muaj zog acid ib puag ncig (tshwj xeeb tshaj yog cov uas muaj chloride ions thiab pH tsawg), cov tshuaj stability ntawm tantalum tiv thaiv hlab muaj ib tug yooj yim kom zoo dua, thaum ceramic hlab yog haum nyob rau hauv oxidizing atmospheres thiab tshwj xeeb high -kub ib puag ncig.

Lub tantalum tiv thaiv raj yog cov khoom siv hlau nrog cov yas zoo heev. Nws muaj kev ntxhib los mos thiab tsis yooj yim rau nkig tawg. Nws tuaj yeem nqus tau zoo thiab tsis muaj kev vibration, thermal expansion stress, lossis lwm yam khoom siv los ntawm cov kav dej. Tsis tas li ntawd, R05200 tantalum muaj cov txheej txheem zoo thiab weldability thiab tuaj yeem ua rau cov khoom tshwj xeeb- zoo li cov phab ntsa nyias, qhov sib piv loj, lossis flanges los pab txhawb kev sib txuas ntawm cov hlau txuas nrog cov kab ke.

Qhov tseem ceeb ntawm cov raj tiv thaiv ceramic yog cov khoom siv tawv. Txawm hais tias nws nyuaj heev thiab hnav- tiv taus, nws tsis muaj peev xwm tiv taus kev khoov, ncab, lossis kev hloov pauv kub hnyav (kev poob siab). Thaum lub sij hawm cua kub ceev / cua txias, cov hlab ntsha ceramic yog yooj yim ua rau tawg lossis tawg vim tsis muaj peev xwm tso tawm sab hauv thermal stress. Nyob rau tib lub sijhawm, kev ua cov ceramics tsuas yog tso siab rau sintering lossis sib tsoo, ua rau nws nyuaj rau tsim cov txheej nyias nyias- cov phab ntsa. Yuav tsum tau saib xyuas tshwj xeeb kom tsis txhob muaj kev sib tsoo thaum lub sijhawm teeb tsa.

Hauv kev ua haujlwm nrog kev vibration, kev hloov pauv siab, lossis nquag pib thiab nres, lub siab tawv thiab qaug zog tsis kam ntawm tantalum hlab yog unmatched los ntawm cov hlab ntsha ceramic. Ceramic raj tsuas yog tsim rau siv nyob rau hauv qhov chaw zoo li qub nrog qhov kub thiab txias thiab tsis muaj kev ntxhov siab.

Lub tshav kub conduction efficiency ntawm lub raj tiv thaiv ncaj qha cuam tshuam lub lag luam lub sij hawm ntawm qhov kub thiab txias sensor (xws li lub thermocouple).

Lub thermal conductivity ntawm tantalum yog hais txog 54-57.5 W/(m·K), uas yog nyob rau theem zoo ntawm cov hlau. Qhov no tso cai rau cov cua sov kom nrawm nrawm los ntawm cov phab ntsa ntawm lub raj mus rau qhov ntsuas kub sab hauv, ua rau cov lus teb ceev thiab rhiab ntawm lub sijhawm tiag tiag, uas yog qhov tseem ceeb rau cov tshuaj tiv thaiv uas yuav tsum tau tswj cov txheej txheem meej.

Ceramic muaj cov thermal conductivity tsawg heev, feem ntau ntawm 1-30 W / (m·K). Nws "thermal rwb thaiv tsev" cov yam ntxwv ua rau pom tseeb qhov ntsuas kub ntsuas lag luam thiab insensitivity rau kub hloov. Hauv qee qhov xwm txheej uas ua raws li kev txuag hluav taws xob lossis kev tswj qhov kub thiab txias, qhov thermal conductivity tsawg ntawm cov raj ceramic yuav ua rau kub tswj qeeb thiab cuam tshuam rau cov khoom zoo.

Rau cov txheej txheem txuas uas yuav tsum tau ceev ceev thiab raug ntsuas kub, tantalum tiv thaiv hlab yog ib qho kev xaiv zoo dua.

The melting point of tantalum is as high as 2996-3017℃, but its upper limit of long-term use temperature in air is limited by oxidation problems. The surface is usually stable below 350℃, and higher temperatures need to be used in a vacuum or inert atmosphere. In an ultra-high-temperature (>1000℃) oxidizing cua, ceramics (xws li alumina raj, uas tuaj yeem siv txog li 1100-1300 degree) qhia lawv qhov zoo ntawm qhov kub thiab txias.

Txawm li cas los xij, nws yuav tsum tau muab sau tseg tias nyob rau ntawm ultra{0}} kub kub, cov hlab ntsha ceramic yuav mos los yog hnov mob nrog qee yam xov xwm, thiab lawv cov airtightness yuav txo qis. Hom tsis ua haujlwm ntawm tantalum ntawm qhov kub thiab txias yog oxidative "siv," thaum rau cov ceramics nws tawg los yog melting.

khoom parameter

Cov khoom npe	R05200 Tantalum Tiv Thaiv Tube
OD	25.4mm / Raws li cov neeg siv khoom xav tau
Sab nraud txoj kab uas hla	± 0.05 hli
ID	23mm / Raws li cov neeg siv khoom xav tau
Ntev	608mm / Raws li cov neeg siv khoom xav tau
Phab ntsa Thickness	3mm / Customizable
Kev kho saum npoo	Polished / Pickled
Tshuaj muaj pes tsawg leeg	Qhov ntau dua lossis sib npaug 99.95%, Nb Tsawg dua lossis sib npaug 0.010%, Fe Less dua lossis sib npaug rau 0.005%, Ti Tsawg dua lossis sib npaug 0.002%, C Tsawg dua lossis sib npaug 0.002%, H Tsawg dua lossis sib npaug 0.001%, W Less dua lossis sib npaug 0.01%, W Less dua lossis sib npaug 0.01% Tsawg dua lossis sib npaug rau 0.005%, Ni Tsawg dua lossis sib npaug rau 0.002%, O Tsawg dua lossis sib npaug rau 0.010%, N Tsawg dua lossis sib npaug rau 0.002%
Cov txheej txheem tsim khoom	Seamless / vuam
Nto roughness	Ra Tsawg dua lossis sib npaug li 1.6 μm
Thermal conductivity	54 - 57.5W/(m·K)
Coefficient ntawm Thermal Expansion (10⁻⁶/K)	6.5