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Science Forum Index » Materials Forum » A Recommended Book for A Naive to Learn Material Science
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| Matthew Huang |
 Posted: Sun Sep 07, 2003 9:30 am |
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Guest
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Hi,
I am a naive to the material science field. Is there anyone could
recommend a book for me to start with? Actually, I am studying which
material could block the mageteic force line.
Tks in advance.
Matthew |
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| Uncle Al |
| Posted: Sun Sep 07, 2003 12:32 pm |
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Guest
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Matthew Huang wrote:
Quote:
Hi,
I am a naive to the material science field. Is there anyone could
recommend a book for me to start with? Actually, I am studying which
material could block the mageteic force line.
Typical magnetic shields are variations on Mu-metal and Co-netic
alloy. They are sensitive to work hardening. Minimal forming then
thermal annealing may be necessary. Be careful of magnetic saturation
in strong fields. See also Eagle AAA alloy.
Google
"magnetic shielding" 27,400 hits
http://www.mushield.com/material_specs.html
http://www.magnetic-shield.com/shielding.html
http://www.eaglemagnetic.com/prod01.htm
The ultimate magnetic shield is a superconductor. One must have it go
supercon without trapping field in the process. Refrigeration can be
something of a bother. Even Type II supercons can quench in strong
fields.
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
"Quis custodiet ipsos custodes?" The Net! |
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| Gordon Couger |
| Posted: Sun Sep 07, 2003 1:42 pm |
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"Matthew Huang" <matthewhuangkimo@yahoo.com.tw> wrote in message
news:c3badd37.0309070730.4f3ce4f9@posting.google.com...
Quote: Hi,
I am a naive to the material science field. Is there anyone could
recommend a book for me to start with? Actually, I am studying which
material could block the mageteic force line.
If you are needing to block the magnetic field for an experiment it may be
easier to move your experiment to an area free of magnetic fields.
Agricultural fields away from power lines are the quietest environment you
are likely to find both electrically and magnetically.
Motorola has a million dollar RF absorbing chamber for testing and
certifying some equipment one of their competitors uses a corn field.
Gordon |
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| William Kaukler |
| Posted: Mon Sep 08, 2003 11:24 pm |
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Block as in shield can be done two was, but neither is 100%. Magnetic
shielding is easy to find, but what might suit your needs better are to use
driven magnetic coils that offset the external fields you want to stop.
There are commercial devices available just to do that for stray fields one
might get from motors and transformers. If you need to go higher, custom
fab coils and supply. Can even track varying field with hall sensors and
that's something mu metal can't do.
Dr. K
"Matthew Huang" <matthewhuangkimo@yahoo.com.tw> wrote in message
news:c3badd37.0309070730.4f3ce4f9@posting.google.com...
Quote: Hi,
I am a naive to the material science field. Is there anyone could
recommend a book for me to start with? Actually, I am studying which
material could block the mageteic force line.
Tks in advance.
Matthew |
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| Arthur Devine |
| Posted: Sun Sep 14, 2003 8:33 pm |
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"William Kaukler" <kauklwf@hiwaay.net> wrote in message news:<_7-dnWtdU5m3-cCiU-KYuA@comcast.com>...
Quote: Block as in shield can be done two was, but neither is 100%. Magnetic
shielding is easy to find, but what might suit your needs better are to use
driven magnetic coils that offset the external fields you want to stop.
There are commercial devices available just to do that for stray fields one
might get from motors and transformers. If you need to go higher, custom
fab coils and supply. Can even track varying field with hall sensors and
that's something mu metal can't do.
Dr. K
"Matthew Huang" <matthewhuangkimo@yahoo.com.tw> wrote in message
news:c3badd37.0309070730.4f3ce4f9@posting.google.com...
Hi,
I am a naive to the material science field. Is there anyone could
recommend a book for me to start with? Actually, I am studying which
material could block the mageteic force line.
Tks in advance.
Matthew
Dear Matthew and Dr. K,
Every year hundreds of young and naive people ask this same
question as I did in 1949. If only we could insulate a magnetic field
with a material that wasn't magnetic we could make a mechanical
magnetic switch; a shield to be synchronized with rotating magnets and
thus allow perpetual rotary motion.
Sorry, no such material is offered yet. It might be partially possible
with
"super solids"; A state where elements share two or more electron
orbits.
Sorry there is no free lunch, fame or fortune in myopic pursuits.
Do not be addicted to addition.(We were born with ten fingers, not
one.)
Dreams come from wishes, Creativity comes from deduction.
Discovery is already an existance.
Better luck on your next move.
Arthur Devine Sc.D. |
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