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- Path: sparky!uunet!spool.mu.edu!agate!netsys!ibmpcug!pipex!warwick!uknet!pyrltd!lucifer!rob
- From: rob@liciren.li.co.uk (Rob Clive)
- Newsgroups: uk.misc
- Subject: Re: uPVC doors and Windows
- Message-ID: <1730@lucifer.UUCP>
- Date: 17 Nov 92 14:17:08 GMT
- References: <1992Nov13.142514.721@axion.bt.co.uk> <1992Nov16.131457.2638@lsl.co.uk>
- Organization: Lucas Powertrain Systems, Electronic Control Group, UK
- Lines: 23
-
- In article <1992Nov16.131457.2638@lsl.co.uk> snail@lsl.co.uk writes:
- >In article <1992Nov13.142514.721@axion.bt.co.uk>, Sukhvinder Aujla writes:
- >> If a hole is made in the metal through the uPVC then:
- >> (1) the steel salesman says the aluminum will turn to powder over a
- >> period of time.
- >
- >One of the most useful properties of Aluminium is that once the surface is
- >oxidised, the oxidisation stops. The outer layer prevents any further
- >deterioration occuring. This is not true with steel.
-
- >Disclaimer. I'm not metal expert of Chemist. I remembered the Aluminium bit
- >from an O Level exam I sat a long time ago.
-
- I seem to remember (probably from A level) that aluminium oxide is
- relatively inert but susceptible to attack by mercury. This gave rise
- to visions of creeping out in the dead of night to the nearest
- electricity pylon armed with a pot of mercury and bringing down the
- national grid. Wouldn't be any good now though 'cause they all seem to
- move around a lot :-)
- ----------
- Rob Clive. Most nets: rob@liciren.li.co.uk
- Lucas Powertrain Systems, Cirencester UUCP: ...!uknet!lucifer!rob
- Gloucestershire, GL7 1QG, UK. Now read on....
-