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¼ÐÃD: ** SLR [¥´¦L¥»­¶]

§@ªÌ: RMP    ®É¶¡: 7-3-2008 01:18     ¼ÐÃD: ** SLR

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§@ªÌ: B20_hk    ®É¶¡: 7-3-2008 01:23

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§@ªÌ: mike-mike    ®É¶¡: 7-3-2008 10:06

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§@ªÌ: 22nd_SAS    ®É¶¡: 7-3-2008 20:29

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§@ªÌ: cato    ®É¶¡: 7-3-2008 22:18

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§@ªÌ: adrianyahk    ®É¶¡: 7-3-2008 23:19

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§@ªÌ: B20_hk    ®É¶¡: 7-3-2008 23:42

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§@ªÌ: 22nd_SAS    ®É¶¡: 8-3-2008 00:32

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§@ªÌ: B20_hk    ®É¶¡: 8-3-2008 01:06

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§@ªÌ: ddyjab    ®É¶¡: 9-3-2008 01:15

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§@ªÌ: B20_hk    ®É¶¡: 9-3-2008 01:34

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§@ªÌ: zeta    ®É¶¡: 9-3-2008 01:40

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rusting«Yfor iron only
¨ä¥Lª÷ÄÝ«Ycorrode instead of rust
§@ªÌ: adrianyahk    ®É¶¡: 9-3-2008 01:44

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rusting«Yfor iron only
¨ä¥Lª÷ÄÝ«Ycorrode instead of rust
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§@ªÌ: °ª!°ª!°ª!    ®É¶¡: 9-3-2008 01:45

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§@ªÌ: match_man    ®É¶¡: 9-3-2008 18:58

Aluminium-¤£¬O¥u·|oxidize¦ý¤£·|rusting ¶Ü?
but Aluminium has strong resistance towards corrosion ....
§Ú¦ô­ø«Ycorrosion....¦]¬°¥»¨­Aluminium ¥~­±¦³¤@¼hstableªºAluminium 3+ ions ªºprotective coat....



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§@ªÌ: ¨½¦w    ®É¶¡: 9-3-2008 19:31

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§@ªÌ: zeta    ®É¶¡: 9-3-2008 19:38

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­ì©«¥Ñ match_man ©ó 9-3-2008 18:58 µoªí
Aluminium-¤£¬O¥u·|oxidize¦ý¤£·|rusting ¶Ü?
but Aluminium has strong resistance towards corrosion ....
§Ú¦ô­ø«Ycorrosion....¦]¬°¥»¨­Aluminium ¥~­±¦³¤@¼hstableªºAluminium 3+ ions ªºprotective coa ...
concept correct but not accurate enough
Aluminium is actually a quite reactive metal
In contact with air, aluminium will be oxidized to Aluminium oxide (Al2O3)
Aluminium oxide, unlike rust, is not porous, therefore it cannot allow air or water or salt to penetrate it to react further more with aluminuium
That make aluminium oxide a protective layer of aluminium layer.

Al2O3«Yionic compound, ¤£¹LÊ\­ø«Y¥Hion form¾¤«OÅ@aluminium¬[
§@ªÌ: match_man    ®É¶¡: 9-3-2008 20:10     ¼ÐÃD: ¦^ÂÐ #17 zeta ªº©«¤l

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§@ªÌ: RMP    ®É¶¡: 18-3-2008 00:09

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§@ªÌ: surfer_ann    ®É¶¡: 18-3-2008 00:37     ¼ÐÃD: ¦^ÂÐ #19 RMP ªº©«¤l

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§@ªÌ: B20_hk    ®É¶¡: 18-3-2008 00:47

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§@ªÌ: MG-42    ®É¶¡: 18-3-2008 01:54

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§@ªÌ: gabrielwong1991    ®É¶¡: 18-3-2008 04:38

= =Use a battery, connect the -ve to the body of the gun, it wont rust ga la ok???

XD From my chem book ages ago...




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