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byggnadsmaterial > 18 > Flashcards

18 Flashcards

1
Q

aluminium tillverkning

A

tillverkas av leran bauxit som genom en kemisk process utvinner aluminiumoxid som sedan omvandlas till ren aluminum

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2
Q

energianvändningen vid aluminum tillverkning

A

15000 kwh omsättningen kräver endast 5%

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3
Q

korrosionsbeständighet hos aluminum

A

bildas ett skyddande oxidskikt på ytan

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4
Q

aluminum i alkaliska miljöer

A

försämras vid höga ph

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5
Q

förbättring av korrosionsskydd

A

anodisering samt infärgning av tennsalter

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6
Q

stål vs aluminum hållfasthet

A

stål

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7
Q

stål vs aluminum densitet

A

stål

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8
Q

stål vs aluminum e modul

A

stål

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9
Q

stål vs aluminum delta l

A

aluminum

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10
Q

stål vs aluminum värmeledningsförmåga

A

aluminium

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11
Q

mässing

A

koppar legerad med zink

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12
Q

brons

A

koppar legerad med tenn

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byggnadsmaterial (17 decks)

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