Mechanical Properties ntawm 1235-O Aluminium Ntawv Nyiaj rau Cov Roj Teeb Tam Sim No
1235-O txhuas ntawv ci nyob rau hauv ib tug tshwj xeeb mechanical niche nyob rau hauv lithium-ion roj teeb tsim: nws yog txhob txwm softer thiab ntau ductile tshaj lub strain-hardened tempers siv rau tabs los yog ntim, vim hais tias cov tam sim no collector yuav tsum ciaj sia calendering, winding, thiab electrolyte raug tsis tawg. Nws lub zog tawm los feem ntau yog nyob ib puag ncig 90 MPa, lub zog tensile nyob rau hauv 95-140 MPa ntau yam nyob ntawm qhov ntsuas thiab tus neeg xa khoom, thiab elongation sib txawv - los ntawm ntau dua los yog sib npaug rau 3% hauv nyias 15-20 μm roj teeb ntawv ci mus rau ntau dua 30% hauv cov ntawv tuab O-temper tom qab pom zoo annealing. Qhov "O" temper tsis yog ib qho kev qhia tshwj xeeb; nws yog lub qhov rais txheej txheem, thiab nkag siab tias qhov rais yog tus yuam sij rau kev xaiv thiab qhia 1235-O kom raug.
Vim li cas "O" Temper Exists: Tam sim no Tus Neeg Sau Txoj Haujlwm Kev Siv Tshuab
Ib tug cathode tam sim no collector tsis yog ib qho kev tivthaiv nyob rau hauv cov lus pom zoo. Nws tsis nqa lub roj teeb qhov hnyav lossis tiv thaiv kev cuam tshuam sab nraud hauv kev ua haujlwm ib txwm muaj. Nws cov tshuab ua haujlwm yog qhov tshwj xeeb tshaj plaws: nws yuav tsum nyob twj ywm tsis tu ncua, kev siv lub vev xaib thaum cov khoom siv yog coated, qhuav, calendered kom siab ceev, slit, thiab qhov txhab rau hauv lub cell.
Txhua kauj ruam no imposes ib qho kev thov sib txawv. Calendering compresses cov coated electrode ntawm yob ntawm qhov siab, thiab cov ntawv ci yuav tsum deform plastically nrog txheej es tsis txhob tawg hauv qab nws. Winding khoov cov ntawv ci nyob ib ncig ntawm ib lub vojvoog me me ntawm lub xov tooj ntawm tes, yuav tsum tau elongation txaus kom haum rau qhov khoov yam tsis muaj qhov tawg. Thaum lub sij hawm them nqi-kev caij tsheb kauj vab, cov khoom nquag nthuav dav thiab sib cog lus, thiab cov ntawv ci yuav tsum tuav cov adhesion thiab hluav taws xob sib cuag los ntawm ntau txhiab lub voj voog.
Lub O temper hais txog cov kev xav tau no los ntawm kev txo qis zog thiab ua kom muaj zog, tab sis tsis mus rau qhov tsis muaj kev txwv. Cov mos mos dhau lawm, thiab cov ntawv ci tsis tuaj yeem tswj qhov nro los ntawm txoj kab txheej yam tsis muaj kev ncab lossis wrinkling. Nyuaj heev, thiab nws tawg thaum lub sij hawm calendering los yog winding. Cov cuab yeej cuab tam lub hom phiaj rau 1235-O yog li ntawd qhov sib npaug, tsis yog qhov loj tshaj ntawm ib qho nqi.
Cov Khoom Siv Hluav Taws Xob Hluav Taws Xob rau 1235-O
Cov ntaub ntawv luam tawm rau 1235-O nws txawv heev vim hais tias lub temper designation ib leeg tsis qhia qhov ntsuas, ua keeb kwm, lossis kev sim ntsuas. Cov lus hauv qab no suav nrog cov ntau yam uas tau tshaj tawm thoob plaws tus neeg muag khoom tshwj xeeb, cov qauv qauv, thiab cov kev tshawb fawb soj ntsuam cov phooj ywg:
| Khoom | Hom Ntau rau 1235-O | Ntsiab lus / Source Basis |
|---|---|---|
| Yield zog (Rp0.2) | 90 ± 5 MPa | O-temper tom qab annealing; tus neeg muag khoom datasheet |
| Tensile zog (Rm) | 95-140 MPa | Dav dav thoob plaws qhov ntsuas; Cov khoom siv roj teeb ci ci ntau dua lossis sib npaug ntawm 140 MPa rau nyias qhov ntsuas; thicker O-temper ntawv ci tuaj yeem zaum ze 95-110 MPa |
| Elongation (A50 lossis A100) | ≥3% (thin battery foil) to >30% (cov ntawv tuab O-temper) | Nyias 15-25 μm ntawv ci: Ntau dua lossis sib npaug li 3%; thicker O-temper lossis optimally annealed ntawv: 25-37% |
| Kev coj ua | Ntau dua lossis sib npaug li 58% IACS | qis dua 1070 vim alloying thiab purity; txaus rau feem ntau cov ntawv thov cathode |
| Purity | Ntau dua lossis sib npaug rau 99.35% Al | Txheem rau roj teeb-qib 1235 |
Qhov ntsuas kev nyob ruaj khov yog kab ntawv tseem ceeb tshaj plaws kom nyeem kom zoo. Lub roj teeb 0.015 hli thiab 0.10 hli O-temper tab lossis cov ntawv txuas txuas yog ob qho tib si "1235-O" hauv kev xaiv, tab sis lawv qhov ntsuas elongation qhov sib txawv ntawm qhov kev txiav txim ntawm qhov loj. Cov ntawv nyias nyias muaj qhov sib txawv tsawg dua los faib cov kab mob, thiab cov pinholes lossis qhov chaw tsis xws luag uas yuav tsis pom zoo hauv daim ntawv tuab dhau los ua qhov chaw pib tawg. Thaum tus neeg muag khoom hais tias "elongation Ntau dua lossis sib npaug li 3%," daim duab ntawd siv rau cov khoom siv roj teeb nyias, tsis yog rau txhua yam khoom 1235-O lawv muag.
Cov Yield Strength-Elongation Trade-Off hauv Annealing
O temper yog tsim los ntawm annealing tom qab txias dov, thiab cov annealing tsis txiav txim seb qhov twg cov khoom zaum kawg tsaws ntawm lub zog-ductility spectrum. Kev tshawb fawb ntawm 1235D txias-kuav los tiag daim ntawv - lub precursor rau roj teeb ntawv ci - qhia tau hais tias raws li annealing kub nce, tensile zog thiab yield zog txo thaum elongation nce, mus txog rau ib tug taw tes.
Tib txoj kev tshawb nrhiav pom qhov zoo tshaj plaws: elongation mus txog qhov siab tshaj plaws ntawm kwv yees li 37.4% ntawm 460 degree, nrog rau qhov tsawg kawg ntawm theem ob qhov loj me (1.19 μm) thiab qhov tsawg kawg nkaus recrystallized grain loj (9.09 μm) ntawm qhov kub ntawd. Tshaj li 460 degree, nplej coarsen thiab elongation pib poob. Qhov no yog qhov kev pom tseem ceeb rau 1235-O specification: "tag nrho annealed" tsis zoo ib yam li "optimally annealed." Ib tus neeg muag khoom uas muaj qhov kub thiab txias dua los lav lub siab recrystallized O temper tuaj yeem xa cov khoom siv nrog lub zog siv tau tab sis qhov zoo tshaj plaws elongation vim tias cov qauv nplej twb pib coarsen.
Rau cov ntawv ci roj teeb tshwj xeeb, lub hom phiaj ua kom zoo tshaj plaws feem ntau yog qhov ntsuas kub tsawg kawg nkaus uas ua tiav recrystallization tsis muaj kev loj hlob ntawm cov qoob loo - lub qhov rais uas yuav tsum tau calibrated rau qhov tshwj xeeb txias-dov txo thiab ntsuas ntawm cov khoom. Intermediate annealing thaum lub caij txias dov yog qhov kev kho cua sov nkaus xwb hauv txoj kev ntxaib-yob cam khwb cia-dov txoj kev rau 1235D roj teeb ntawv ci, ua rau cov kauj ruam no yog ib qho tseem ceeb tshaj plaws ntawm cov txheej txheem sib txawv rau qhov kawg txhua yam khoom.
Lub roj teeb Foil Standards tiag tiag xav tau dab tsi
Cov cuab yeej cuab yeej cuab tam rau 1235 roj teeb ntawv ci tau nruj heev. Tuam Tshoj txoj kev hloov kho tshiab rau lub teb chaws tus qauv rau lithium-ion roj teeb aluminium foil thov kom nce lub zog tensile yuav tsum tau rau 1235 los ntawm ntau dua los yog sib npaug rau 150 MPa rau ntau dua los yog sib npaug rau 240 MPa, thiab qhov yuav tsum tau elongation los ntawm ntau dua los yog sib npaug rau 1.5% mus rau ntau tshaj los yog sib npaug rau 3.0%. Qhov no tsis yog qhov tsis sib haum xeeb ntawm O-temper lub tswv yim - nws qhia txog kev hloov pauv mus rau cov ntawv nyias nyias uas yuav tsum muaj lub zog ntau dua rau ib chav tsev tuab kom tswj tau lub web nro thiab tiv thaiv kev puas tsuaj, thaum tseem xav tau kom txaus elongation kom muaj sia nyob calendering.
Cov ntaub ntawv muab khoom qhia qhia txog ntau yam ntawm cov khoom lag luam muaj. Ib tus neeg tsim khoom loj qhia txog lub zog tensile Ntau dua lossis sib npaug ntawm 140 MPa thiab elongation Ntau dua lossis sib npaug li 3% rau nws 1235 roj teeb ntawv ci nyob rau hauv 15-25 μm ntau yam, nrog thickness kam rau ua ntawm ± 3%. Lwm qhov chaw hais txog lub zog tensile ntawm 120-180 MPa rau O-temper roj teeb ntawv ci raws li qhov sib txawv, nrog rau kev ua haujlwm ntawm 60% IACS. Qhov pom tseeb tsis sib xws ntawm cov peev txheej tau piav qhia los ntawm qhov sib txawv ntawm qhov ntsuas, ntsuas txoj kev (tensile specimen geometry muaj qhov cuam tshuam loj ntawm cov ntawv ci nyias), thiab seb qhov kev kub ntxhov tau tshaj tawm yog O lossis qhov mob me me.
Rau cov chaw tsim khoom roj teeb sau cov lus qhia txog kev yuav khoom, qhov ua tau zoo yog qhov hais txog "1235-O" ib leeg tsis txaus. Cov lus qhia tshwj xeeb yuav tsum ntsuas lub xeev, lub zog tensile ntau, qhov tsawg kawg nkaus elongation ntawm lub ntsuas ntsuas, thiab cov qauv ntsuas (ASTM E345 rau cov ntawv ci tensile kuaj yog ib txwm muaj). Daim ntawv pov thawj 1235-O qhia txog 35% elongation ntawm cov qauv tuab tsis lav tias 15 μm coil los ntawm tib tus neeg muag khoom yuav ua tau raws li 3% yam tsawg kawg nkaus uas yuav tsum tau ua.
1235-O Versus 1070-O: Kev Sib Piv Mechanical
Qhov kev xaiv ntau tshaj plaws rau 1235 rau cov khoom siv roj teeb tam sim no yog 1070, qib siab dua-purity (Ntau dua lossis sib npaug rau 99.7% Al piv rau Ntau dua lossis sib npaug rau 99.35% rau 1235). Kev lag luam tawm yog mechanical, tsis tsuas yog hluav taws xob:
| Khoom | 1235-O | 1070-O |
|---|---|---|
| Lub zog tensile | ~ 95-110 MPa (thicker O-temper) | ~ 85-100 MPa |
| Elongation | Ntau dua lossis sib npaug li 25% (thicker O-temper) | Ntau dua lossis sib npaug li 30% |
| Kev coj ua | Ntau dua lossis sib npaug li 58% IACS | Ntau dua lossis sib npaug li 61% IACS |
| Purity | Ntau dua lossis sib npaug rau 99.35% Al | Ntau dua lossis sib npaug li 99.7% Al |
| Mechanical cim | Siab zog, zoo dua weld stability | Cov conductivity siab dua, qis sab hauv tsis kam |
Cov ntaub ntawv los ntawm tus neeg muag khoom ncaj qha sib piv ntawm 1235 thiab 1070 rau cov ntawv thov roj teeb.
Kev txhais lus rau kev xaiv tam sim no yog nyob ntawm tus qauv tsim ntawm tes. 1235 lub zog siab dua muab nws qhov zoo dua rau hauv cov ntawv thov uas cov ntawv ci yuav tsum tiv taus deformation thaum lub sij hawm vuam los yog ua kom muaj kev ruaj ntseg los ntawm kev rov ua dua - lub hwj chim thiab cov roj teeb cia yog cov lus pom zoo tshaj plaws . 1070 cov conductivity siab dua txo qis ohmic thiab yog qhov zoo dua qhov uas txo qis hauv cov khoom siv hluav taws xob yog qhov tseem ceeb. Rau lub cathode tam sim no collector nyob rau hauv high-zog-density cell qhov twg calendering yog nruj heev thiab cov ntaub ntawv ntsuas yog tsawg, lub zog ntawm 1235 feem ntau yog txiav txim siab, txawm nyob rau hauv tus nqi ntawm ob peb feem pua cov ntsiab lus ntawm conductivity.
Cov Khoom Uas Tseem Ceeb Tshaj Plaws tab sis Tsis tshua pom tshwm rau ntawm Cov Ntaub Ntawv: Cov Txheej Txheem Nto
Cov cuab yeej siv tshuab piav qhia txog yuav ua li cas cov ntawv ci coj los ua cov khoom siv ntau. Hauv cov khoom siv tam sim no, txawm li cas los xij, qhov kev sib txuas tseem ceeb yog qhov chaw, vim tias qhov adhesion ntawm cov khoom siv thiab cov ntawv ci txiav txim siab seb cov electrode delaminates thaum caij tsheb kauj vab. Cov ntawv ci uas ua tau raws li txhua qhov tensile thiab elongation specification tab sis muaj qhov tsis sib xws ntawm lub zog saum npoo los yog cov roj seem uas tsis muaj paug yuav ua tsis tiav nyob rau theem adhesion ua ntej nws cov khoom siv tshuab puas tau sim.
Roj teeb-qib 1235-O feem ntau yog muab los ntawm qhov chaw ntub dej ntawm ntau dua lossis sib npaug li 32 dynes / cm thiab tswj kev huv (tsis pom cov roj stains, cov xim tsis sib xws) los txhawb kev ua kom zoo ib yam. Qhov no yog cov cuab yeej cuab tam-chaw nyob ib puag ncig: lub zog saum npoo cuam tshuam li cas cov txheej tuav cov ntawv ci, uas nyob rau hauv lem txiav txim siab seb lub coated electrode muaj sia nyob calendering yam tsis muaj txheej txheej cais los ntawm substrate. Thaum soj ntsuam 1235-O cov neeg muab khoom, qhov kev huv huv ntawm qhov chaw thiab cov dej ntub dej muaj nyob nrog lub zog tensile thiab elongation nyob rau hauv cov qauv tsim nyog, tsis yog nyob rau hauv ib qho cais "nto zoo" qeb kho raws li theem nrab.
Ntsiab Cai
- 1235-O is a process window, not a single fixed property set. Yield strength typically sits around 90 MPa, tensile strength in the 95–140 MPa range, and elongation varies from ≥3% in thin battery foil to >30% nyob rau hauv daim ntawv tuab O-temper nyob ntawm qhov ntsuas thiab annealing keeb kwm.
- Lub annealing zoo rau qhov siab tshaj plaws elongation yog nyob ib ncig ntawm 460℃hauv 1235D txias-kuav los tiag daim ntawv, qhov twg thib ob-theem hais thiab recrystallized nplej ncav cuag qhov tsawg kawg nkaus qhov loj thiab elongation peaks ntawm kwv yees li 37.4%. Kev kub siab dua coarsen nplej thiab txo ductility.
- Cov qauv nruj nruj: Tuam Tshoj tus qauv siv roj teeb ntawv qhia txog kev nce 1235 tensile lub zog yuav tsum tau ntau dua los yog sib npaug rau 240 MPa thaum xav tau ntau dua lossis sib npaug rau 3.0% elongation, xav txog kev hloov mus rau cov ntawv nyias nyias nrog lub zog siab dua ib chav tsev tuab.
- 1235-O ua lag luam conductivity rau lub zog kwv yees li 1070-O: kwv yees li 95-110 MPa tensile lub zog thiab Ntau dua los yog sib npaug rau 25% elongation piv rau 85-100 MPa thiab Ntau tshaj los yog sib npaug rau 30% rau 1070, nrog conductivity ntawm Greater dua los yog sib npaug rau 5% CS los yog sib npaug rau 5% IACS.
- Ib qho kev qhia tshwj xeeb ntawm "1235-O" tsis tiav yam tsis muaj qhov ntsuas, qhov tensile ntau yam, qhov tsawg kawg nkaus elongation ntawm qhov ntsuas, thiab cov qauv ntsuas - cov qauv elongation tuab tsis hloov mus rau nyias cov ntawv ci.
- Deg wettability (Ntau dua lossis sib npaug li 32 dynes / cm) thiab kev huv yog cov khoom siv ua haujlwm hauv cov khoom siv tam sim no, vim tias lawv txiav txim siab seb cov ntawv ci txheej txheej puas muaj sia nyob calendering thiab cycling.
