1. Yuav ua li cas txhuas cov thermal conductivity piv rau lwm cov hlau uas muaj hlau hauv kev hloov pauv cua sov?
Thermal conductivity tseem ceeb (W \/ Mw · K ntawm 25 degree):
Ntshiab txhuas (1100): 237
Tooj liab: 401
Steel: 16-45
Titanium: 21.9
Cov Ntsiab Lus Tseem Ceeb:
{{0 {0}} 50 sib dua dua li tooj liab rau kev hloov pauv kub sib npaug
5x zoo dua condricity tshaj stainless hlau
85% them txo nqi hluav taws xob thiab nyiaj (429 w \/ min k)
Daim Ntawv Thov Piv Txwv:
Lub roj teeb ev roj teeb siv 6061 alloy (167 w \/ min k) nrog 30% kev txuag hluav taws
2. Dab tsi cuam tshuam rau thermal conductivity hauv aluminium alloys?
Tus influe thawj:
Alloying Ntsiab(Cov neeg ua txhaum yam phem tshaj plaws):
FE (txo los ntawm 15% ntawm 0. 5% cov ntsiab lus)
SI (9% txo ntawm 1%)
Qhov mob kub:
Conductity tso 20% ntawm 25 Qib mus rau 300 degree
Txoj kev ua:
Txias ua haujlwm txo qis los ntawm 8-12%
Annealing restores 95% ntawm tus nqi qub
Cov txheej txheem kom tsim nyog:
1350 series (99.5% Ntshiab) Ua tiav 229 w \/ min k
Lis Cleallary Engineering rau 5% Kev Txhim Kho
3. Yuav ua li cas yog Aluminium lub thermal capernivity siv hauv electronics thermal kev tswj?
Kev daws teeb meem niaj hnub:
Lub dab dej kub:Extruded 6063 (201 nas 1) nrog Fin ceev txog 40 fins \/ nti
Thermal interface khoom:Aluminium puv EPPOXIES (5-8 w \/ min kay)
Vapor CHAMBERS:3D-luam tawm alsi10mg (160 w \/ min k) nrog 500W \/ CM² kub flux
Cov ntaub ntawv ua tau:
| Ib feem | Át txo | Qho hnyav |
|---|---|---|
| GPU Cia Txias | 18 DEGREE | 320g |
| LED Array | 25 degree | 1.2kg |
Kev Kawm Kev Kawm:Apple M3 Ultra Nti Txias Siv Anodized 6061
4. Dab tsi yog cov kev txwv ntawm txhuas nyob hauv cov ntawv thov kub siab?
Qhov ntsuas tseem ceeb:
Softening taw tes:{{0 {}} degree (nyob ntawm alloy)
Oxidation teebmeem:
15% kev ua tiav poob tom qab 1000h ntawm 250 degree
Al₂o₃ txheej ({{{0}} μm) ntxiv 0.05 degree \/ w thermal kuj
Cov tswv yim kev tso cai:
Ntshav hluav taws xob elecma electrolytic oxidation txheej tswj hwm 90% kev coj ua
Al-SiC composites (180 W/m·K) for >400 DEGRE ib puag ncig
Aerospace piv txwv:RAWS RAWS RAWS RAWS RAWS RAWS RAWS RAWS RAWS RAWS RAWS ROOJ ROOJ ROOJ ROOJ LABOR SIV AL -40 sic
5. Yuav ua li cas ua cov txheej txheem kev tsim khoom siab txhim kho kom zoo li Aluminium's Thermal Kev Ua Tau Zoo?
Cov Txheej Txheem Tshiab:
Laser Hmoov txaj Fusion:
99.5% Dirt Alsi10Mg nrog 150 w \/ min k
Conformal txias xa channel tsis yooj yim sua nrog machining
Kev sib txhuam do vuam:
Hazelity poob<5% vs. 15% in MIG
Nanostructuring:
Graphene-txhawb nqa al tau qhia 250 w \/ min k
Kev Cuam Tshuam:
40% Txhim Kho Cov Hluav Taws Kub Kub
25% sib dua satellite thermal tswj lub tshuab
Yav Tom Ntej Outlook:
NASA tsim cov khoom sib xyaw Al-pob zeb diamond sib xyaw (600+ w \/ min kay)
