Basic Physical Data
| Khoom | Tus nqi |
|---|---|
| Melting point | 660℃(1,220℃F) |
| Boiling point | Txog 2,327℃(4,221℃F); qee cov ntaub ntawv niaj hnub hais txog 2,470–2,519 degree |
| txheeb ze ntom ntom | 2.70 g / cm³ (kwv yees li ib -feem peb ntawm steel) |
| Kev nplua nuj | Peb feem ntau cov khoom nyob rau hauv lub ntiaj teb crust (tom qab oxygen thiab silicon); cov hlau ntau tshaj |
Aluminium yog dab tsi?
Aluminium yog ib qho silvery-dawb lub teeb hlau nrog zoo ductility, nkag rau hauv pas nrig, flake, ntawv ci, hmoov, ribbon thiab hlau cov ntaub ntawv. Nyob rau hauv cov huab cua noo nws tsim ib tug nyias oxide zaj duab xis uas tiv thaiv ntxiv hlau corrosion. Aluminium hmoov kub hnyiab hauv huab cua nrog cua sov, emitting ib tug blinding dawb nplaim taws. Chemically nws dissolves nyob rau hauv dilute sulfuric, nitric thiab hydrochloric acid thiab nyob rau hauv sodium thiab potassium hydroxide daws, thiab yog insoluble nyob rau hauv dej.
Vim li cas cov ntsiab lus melting thiab Boiling tseem ceeb
Tsawg melting point (660 degree):aluminium melts ntawm qhov kub qis dua li cov hlau (kwv yees li 1,370-1,530 degree), uas ua rau casting, tuag casting thiab rov siv dua lub zog-ntau npaum - yog vim li cas aluminium recycling tsuas yog siv li ntawm 5% ntawm lub zog ntawm thawj cov khoom.
High boiling point:Cov kua ntau yam yooj yim rau kev tswj xyuas casting; evaporation tsuas yog ib qho kev txhawj xeeb hauv lub tshuab nqus tsev lossis siab -cov txheej txheem kub.
Tsawg ceev:ntawm 2.70 g / cm³, txhuas yog txog ib -peb qhov hnyav ntawm cov hlau, lub hauv paus ntawm nws siv hauv kev thauj mus los.
Kev siv tseem ceeb
Txoj kev loj hlob ntawm aviation, kev tsim kho thiab kev lag luam tsheb yuav tsum muaj cov yam ntxwv ntawm cov khoom siv tshwj xeeb ntawm txhuas thiab nws cov alloys, uas txhawb kev tsim khoom thiab siv cov hlau no:
Aviation:aircraft tawv, thav duab thiab cov khoom siv (2xxx / 7xxx alloys).
Kev tsim kho:ntaub thaiv phab ntsa, qhov rais, ru tsev thiab cov tswv cuab (6xxx alloys).
Tsheb:lub cev vaj huam sib luag, lub log, cov khoom siv hluav taws xob sib hloov thiab cov khoom sib sib zog nqus (5xxx / 6xxx alloys).
Ntim:aluminium ntawv ci thiab cov kaus poom (1xxx / 3xxx / 8xxx alloys).
Hluav taws xob:conductors, busbars thiab transformer windings (1xxx alloys).
