Material Science Foundations ntawm Cryogenic Cartridge rhaub kev ua tau zoo thiab kev ntseeg tau

Qhov kub thiab txias ntawm -196℃qhia txog cov khoom txwv uas tau muab zais tag nrho ntawm qhov kub thiab txias. Kev ua tau zoo ntawm cov tshuab cua sov hauv cov ntawv siv cryogenic feem ntau yog txiav txim los ntawm cov ntaub ntawv tshawb fawb cov cai uas tswj cov neeg kho tshuab, thermal, thiab hluav taws xob tus cwj pwm ntawm qhov kub thiab txias. Kev nkag siab zoo ntawm cov ntsiab lus tseem ceeb no qhia meej tias vim li cas kev xaiv cov khoom sib txawv ntawm cov kev siv mus sij hawm ntev los ntawm kev ua tsis tiav sai thiab cov teeb meem tsis tu ncua.

Ntawm qhov kub thiab txias, cov hlau ua txawv heev, uas muaj kev cuam tshuam loj rau kev xaiv tsim qauv tseem ceeb. Lub ntsej muag -centered cubic crystal formations, uas yog ib yam ntawm austenitic stainless hlau, ua kom lawv ductility thiab tawg toughness ntawm -196℃. Lub cev-centered cubic formations, ntawm qhov tod tes, ua heev nkig thiab zoo li yuav tawg ntawm qhov kub thiab txias. Qhov yooj yim crystallographic yam no ua rau sheath xaiv cov khoom lean mus rau 316L, 321, thiab lwm yam sib npaug rau cov qib tshwj xeeb, txawm tias lawv raug nqi ntau dua.


Thermal expansion zog imposes tsim kev txwv uas cuam tshuam rau tag nrho cov facets ntawm lub rhaub tsim. Thaum txo qis rau qhov kub thiab txias, cov ntaub ntawv sib txawv ntawm qhov sib txawv heev. Thaum tsim lub rhaub, koj yuav tsum siv cov khoom sib txawv, xws li cov hlau sheath, ceramic rwb thaiv tsev, cov hlau tsis kam, thiab cov ntaub ntawv foob. Txhua yam ntawm cov ntaub ntawv no muaj nws tus kheej thermal expansion coefficient. Kev tsim qauv yuav tsum coj cov kev sib txawv no mus rau hauv tus account yam tsis ua rau cov kab mob sab hauv uas siab dhau thiab tsim cov kab nrib pleb lossis teeb meem hluav taws xob.

Qhov kub coefficients ntawm hluav taws xob resistivity muaj qhov cuam tshuam loj rau kev suav rau qhov ua haujlwm ntawm lub rhaub dej kom zoo. Cov ntaub ntawv hlau tsis kam qhia qhov sib txawv ntawm qhov kub thiab txias, feem ntau yuav poob qis thaum qhov kub thiab txias. Qhov no hloov cov khoom siv hluav taws xob tiag tiag, kos tam sim no, thiab qhov xav tau qhov hluav taws xob los ntawm qhov lawv xav tau ntawm qhov kub thiab txias. Kev tsim cov kev suav yuav tsum tau siv cov kev tiv thaiv tiag tiag ntawm qhov kub ntawm qhov system yuav siv, tsis yog chav tsev - qhov kub thiab txias uas ua rau nws yooj yim ua yuam kev hauv cov lus qhia tshwj xeeb.

Cov yam ntxwv dielectric ntawm cov ntaub ntawv rwb thaiv tsev hloov pauv ntau nrog qhov kub thiab txias hauv txoj kev nyuaj. Rau kev cia siab rau kev pabcuam cryogenic, magnesium oxide, uas yog cov rwb thaiv tsev ib txwm muaj rau lub tshuab cua sov, yuav tsum tau ua tiav hauv qee txoj kev. Lub zog dielectric ntawm qhov kub thiab txias yog cuam tshuam los ntawm cov dej noo, qhov ntom ntom ntawm cov khoom ntim, qhov loj ntawm cov nplej, thiab cov khoom siv purity. Kev ua haujlwm tshwj xeeb thiab kev tswj xyuas kom zoo xyuas kom cov rwb thaiv tsev ua haujlwm nyob qhov twg cov ntaub ntawv txheej txheem tawg dielectrically.

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Cov ntaub ntawv Polymeric muaj teeb meem loj ntawm qhov kub thiab txias uas ua rau lawv siv tsis tau rau cov xwm txheej tseem ceeb. Cov txheej txheem rwb thaiv tsev, cov ntsaws ruaj ruaj, thiab cov tshuaj potting ua nkig zoo li iav thiab tawg nrog kev ntxhov siab me ntsis. Rau cov kev siv no, cov ntaub ntawv yog tshwj xeeb fluoropolymers nrog me me yooj yooj yim los yog ceramics los yog hlau uas ua kom lawv cov duab.

Ntev - kev ua tau zoo nyob rau hauv cov khoom siv cuam tshuam yog cuam tshuam los ntawm cov khoom sib txuas sib txuas thiab cov teebmeem diffusion. Cov khoom sib xyaw ua ke uas ua haujlwm zoo ntawm qhov kub nruab nrab tuaj yeem tsim cov theem sib txuas sib txuas los yog ua kom cov atomic diffusion ntawm qhov kub thiab txias. Metallurgical compatibility tsom xam nres cov me me txoj kev uas tej yam yuav ua txhaum uas ua rau tsis ua hauj lwm uas yuav siv sij hawm ntev dua.

Rau cov ntawv thov tseem ceeb, cov ntaub ntawv pov thawj thiab traceability yog qhov tseem ceeb ntawm kev ruaj ntseg zoo. Thaum siv cov cryogenics, nws yog ib qho tseem ceeb kom khaws cov ntaub ntawv ntxaws ntxaws ntawm cov khoom muaj pes tsawg leeg, kev ua keeb kwm, cov ntaub ntawv kho cua sov, thiab kev kuaj pom. Kev tshuaj xyuas cov khoom lag luam thiab cov saw hlau tswj xyuas kom paub tseeb tias cov khoom siv raug nkag mus rau hauv kev tsim khoom. Cov txheej txheem zoo no ua rau kev tsim khoom kim dua, tab sis lawv ua kom cov khoom ua haujlwm raws li qhov xav tau thiab ua raws li cov cai.