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WELCOME
TO
METALS & PLASTICS
INDEX
&
NICKEL ALLOYS + STAINLESS
STEEL + NON
FERROUS METAL + POLYMERS/MONOMERS/PLASTIC
+ GLASS
+ PROPERTIES
OF METAL + RUST,
CORROSION AND OXIDATION + MAGNETS
+ GLUE
+ OTHER
MATERIALS + NATURE
OF MATTER
STEEL/IRON & NICKEL
ALLOYS
How
is Steel made?
WHY"
does steel have grains?
Metals
Manufacture?
Why
is pig iron called pig iron?
Why
did my cast iron …. break
Mu
Steel?
What
is added to steel to make hardened steel?
What
makes spring steel springy as opposed to non spring
steel?
In terms of phase trans. in
metals/alloys,
What features of martensitic transformation process
render it amenable to stress activation?
Martensitic
transformation
I was wondering if
anybody could give me a detailed explanation or a very informative
internet site about the production of, the uses of and other physical and
chemical data about the following alloys:
- alnico
- nichrome
-
invar
- monel metal
Nickel
alloys
Why is nickel a major component
of many alloys????
Nickel
in alloys
STAINLESS
STEEL
How is
stainless steel produced? Is it a different method of production to
run-of-the-mill steel?
Stainless
Steel Production
When there is so much
iron in stainless steel and austenitic steel (train tracks, I think), how
come magnets don't stick to them? How can any smallish proportion of other
elements in the alloy "hide" the iron dipoles from the external magnetic
field?
Stainless
Steel & Magnetism
Why
doesn't stainless steel rust?
What
is added to iron to make stainless steel? How do the other components act
to inhibit rust?
Sintered
Stainless Steel
I was wiping the bar at
work tonight and I noticed some Slushy syrup had dried under the machine.
When I wiped it off, a stain remained. Why is it so?
Staining
stainless steel
NON FERROUS METAL
What
are bronze and brass composed of?
Balls
and brass monkeys????
What
kind of treatment is needed to obtain aluminuim in the pure
form
Titanium
These ads that are on at the moment - titanium drill bits
- are they for real?
Titanium
nitride coatings
What
is the strongest earth metal?
I need to
know what the composition of all Australian coins are. ie. what metals or
alloys they consist of.
From: James R (Avatar) 21/07/2000 19:51:00
Subject: re: Australian
coins post id: 102927
5, 10, 20 and 50 cent pieces are 75% copper,
25% nickel.
1 and 2 dollar coins are 92% copper, 6% aluminium and 2%
nickel.
http://www.tclayton.demon.co.uk/metal.htm
Metals Used in Coins and
Medals
What is white gold?
White
gold and understanding crystal structure distortion
POLYMERS/MONOMERS/PLASTIC
Can
anyone give me any "recipes" for different polymers and/or plastics
What is a biopolymer?
I'm
just wondering what's the difference between a polymer and a biopolymer?
Can
someone explain in simple terms what process transforms the coal into the
chains of hydro-carbon molecules for plastic, or is that a stupid
question
Chemical
Materials
What is done with recycled
plastics at the moment?
Are Belland Plastics available? Who makes them,
uses them and how?
Plastic
recycling
Researchers at the University
of Illinois say they've developed a "self-healing" form of plastic
designed to extend the life of everyday items without drilling, plugging,
patching or sanding.
Self
healing plastic
On the bags it said
that when they were exposed to enough UV light (didn't say how much) the
plastic would start to break down. Has anyone else seen these, and if they
really are this good?
Biodegradable
plastic
GLASS
If the glass is not allowed to cool over a very long
period of time it will crack or even break, if the glass is cooled rapidly
it will even shatter or explode. What causes this?
Cracking
glass
Why does thick glass appear to be
green?
Why
does thick glass appear to be green?
Is
glass a liquid?
Is
glass a liquid?
More
on is glass a liquid?
Why is glass
clear
Why
is glass clear
Since most of the glass
I come across is rigid and brittle, I am interested in the process by
which glass is made flexible for things like fibreglass and fibre optic
cable cores. Do they put additives into the glass? What's the difference
on a molecular level?
Flexible
glass
PROPERTIES OF
METAL
Does anyone know
the term for the embrittlement caused by freezing a metal pipe.
Brittle
metal
Which one would hold the heat
longer.....glass or metal dish
Conduction
of heat
Aluminium
Aluminium
ores and aluminium & alzheimers disease
How come hot metal always glows the same colour? It seems
that nearly all metals, if heated, will glow red?
Red
hot metal
How did blacksmiths in times
way back overcome the problem of brittle iron?
Brittle
Iron
The jeweler told me that if he had
makes a 18ct ring it will wear longer than a pre-fab one. His reasoning is
that the hand-hammering makes it tougher and more wear resistant. Could
this be true?
Work
hardening
What determines the colour of
some metals?
Metals
colour?
When a metal such as iron is
poured from the melt does it have a crystal structure and how important is
the nature of the pouring and the structure of the metal influence the end
use of the metal?
Not
so basic metallurgy
Ball bearings How
are they made?
Ball bearing
production
Does aluminium get saggy and
soft as it ages?
Metal
sagging with age
Making Swords
Sword
Metal
http://www.howstuffworks.com/sword-making.htm
Sword
Making
Swords
Could you please explain how aluminium anodizing is
done.
Anodizing
RUST, CORROSION AND OXIDATION
What is
rust?
What is corrosion?
Give an example of where rust can be
beneficial.
What is surface protection?
What advantage does
galvanised iron have over just iron?
Corrosion
How to stop rust
Stopping
rust
Rust
and my Wheelbarrow
Stop
rust occuring on steel shelving in a high salinity environment
Sacrificial
anodes on cars
Protecting
your car from rust
Rust
inhibitors and Cars
Rust
and acid
Rates of rust in and out of
water
Rust
The water pipes ,copper and other
metallic types are corroding in our local area from inside outward. The
green blue coloured corrosion is a very costly problem to fix have any
idea why this is happening. its not electrolysis and not caused by
chlorine in the water ???
Pipe
Corrosion
Lead corrosion product - piano
keys
Lead
corrosion product - piano keys
MAGNETS
What happens if you pass an electric current through a
magnet. What does it do to the magnet and what properties does it have. Is
it a good conductor?
Magnets
Why can you only make magnets out of iron and other
ferrous metals? But why can't you make copper magnets?
Magnets
Antiferromagnetism what is it? How do
you make it and what is it's effect on magnetism and field
lines?
Antiferromagnetism
Could someone please explain to me the basic principles
of elasticity, plasticity, malliablity etc. And a really basic explanation
of Hooke's Law
Hooke's
Law - Elasticity & Plasiticity
GLUE
What
makes supa glue supa?
How
does glue dry?
What
Makes Glue Stick
Glue
How
does contact cement work?
Glue/adhesives
How then does Loctite type stuff work in the opposite
way? If it is exposed to "air" it stays liquid. It goes solid in the
absence of the aforementioned "air".
Anerobic
Monomers - Super glue & Loctite
Does
welding into a painted metal surface cause life endangering effects
Welding
technique
What is welding flash
exactly?
Welding
flash and eye damage
OTHER
MATERIALS
What are
the biological and\or chemical differences of hard wood and soft
wood
Hard
Wood & Soft Wood
I once lived next
to a house that had a cement brick wall adjoining our property. The cement
from the bricks was leaching calcium, leaving coral like growths. What
could be causing this, and what will happen to the structural integrity of
the wall?
Leaching
concrete
Does anyone know why plaster
of paris gets hot when it sets ?
also why does concrete get cold when
it sets?
Plaster
of paris and concrete setting
Is ceramic
any material that can be engineered to any specification or must it fall
in a category of containing a certain material or something like
that?
What
is a ceramic?
What is carbon fibre?
What
is carbon fibre?
I just bought a knife
that has been Ice tempered and hardended to Rockwell 56c - 58c.
What is
the ice tempered process? and what is Rockwell?
Hardening
steels - ice tempered
Teflon
Teflon
and how does it stick to the frying pan
NATURE OF
MATTER
Can anyone
tell me if I can decrease the lattice constant of an alloy system by
varying the concentrations of the metals?
Lattice
constants
Can any kind soul here provide
a link to a reasonable online resource that explains the basic crystal
structures (cubic, face-centred cubic etc.)?
http://www.dur.ac.uk/john.evans/webpages/structures.htm
Structures
of Simple Solids
http://members.nuri.net/joo/physics/curri-sub/crystal/lattice.htm
3-D
Crystal Lattice Images
Crystal Growth
Crystal
Growth
Can a solid change into a gas
without being a liquid in between?
Solids,
liquids & Gases
The majority of the work has been assembled by Alan™ ®
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