Hi Bev! Hey, leave Mike alone, he is on the metallurgist team!
Go Mike Go!
Dave
Bev Christian <[log in to unmask]>
Sent by: TechNet <[log in to unmask]>
01/17/2011 09:15 AM
Please respond to
TechNet E-Mail Forum <[log in to unmask]>; Please respond to
Bev Christian <[log in to unmask]>
To
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cc
Subject
Re: [TN] NTC Friday Element Quiz - the Answer
Mike,
You are stealing some of my arguments for my upcoming discussion with Dave
at APEX over a brew of some sort or other (non-alcoholic for me, please).
:)
Bev
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Mike Fenner
Sent: Monday, January 17, 2011 9:58 AM
To: [log in to unmask]
Subject: Re: [TN] NTC Friday Element Quiz - the Answer
Hmm
I think that's a controversial categorisation, probably others will too!
To over simplify:
I was taught on a theoretical/semi-pragmatic level that to be a metal an
element has to be conductive (electrically/thermally) and be
ductile/malleable.
Also that metals lose electrons in chemical reaction non metals gain them,
meaning effectively that elemental metals have a max valency of 3.
Certainly
at 4 things can go either way.
In real life things don't come so clear cut, some elements have some but
not
all metallic properties, and there are allotropes and so on. Anyway you
end
up with metalloids and similar for the not quite metal in-betweenies.
So far as silicon is concerned I think you might be stretching things to
call it a metal, grudgingly it might be metalloid, but it meets few of the
above criteria.
Regards
Mike
ü Please consider the environment before printing this e-mail
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of David D. Hillman
Sent: Friday, January 14, 2011 9:03 PM
To: [log in to unmask]
Subject: [TN] NTC Friday Element Quiz - the Answer
Hi folks - Here is the Friday Element Quiz Answer:
The Question:
The first "pure" use of this element began in 1823. This element is
sometimes classified as a metalloid. The density of this element increases
when it is melted. The native oxide of this element prevents further
oxidation of the element below 900C. What element is being described?
The Answer:
The element is Silicon (Si). Silicon is a metal that enables technology in
a multitude of ways. Silicon is a deoxidizer in steel production, the
basis for integrated circuits, glass, cement, protective coatings for high
temperature applications, and families of polymers. Ge atoms are larger
than Si atoms so an alloy of 85%Si and 15% Ge has an average interatomic
spacing slightly larger than pure Si. When a pure layer of Si is deposited
on the 85/15 alloy, the Si becomes strained resulting in a 70% faster
signal speed parallel to the surface! Less than 1% of the world's
production of Si is the pure form but that 1% (approximately 40K
tons/year) is roughly equal in total dollar value to the other 99% of the
metallic Si production.
Lots of good guesses (this was one of the tougher quizzes) - the winner of
this week's quiz is Bev Christian of RIM. Clumpy have to sneak onto the
A380 in Germany and head for Canada:
So far Clumpy has:
Week 1 Lamar Young, SCS Coatings
- accomplished nothing (drank lots of coffee)
Week 2 Bev Christian, RIM
- conducted REACH material testing
Week 3 Drew Meyer, Benchmark Electronics Inc.
- Solderability testing and mowed the lawn
Week 4 Ian Fox, Goodrich
- had an epic journey of travel
Week 4 Gary Ferrari, Garrick Global
- unknown
Week 5 Fredrick Miller, Astrolab
- unknown
Week 6 David Nelson, Raytheon
- Was a tackling dummy for Dallas Cowboys
Week 7 Graham Collins, L3 Communications
- Cleaned gutters and painted window trim
Week 8 Bill Noel, ITT Geospatial Systems Division
- unknown
Week 9 Steve Gregory of RD Circuits
- unknown
Week 10 David Bealer of Watchfire Signs
- descaled the in-line wash machine! Ouch!
Week 11 Dick Krug of Sparton Corporation
- assisted with AS9100 quality management systems requirements audit
Week 12 Steve Creswick of Balanced Enterprise Solutions
- Acted as Steve's "go fer" due to a broken leg!
Week 13 Gebhard Neifer, Delphi
- conducted a plasma pre treatment Taguchi DOE for a sealing process
Week 14 Bev Christian, RIM
- ????
Have a good weekend.
Dave Hillman
Rockwell Collins
[log in to unmask]
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