-Original Message-
From: Ted Eckert
Sent: Tuesday, January 15, 2008 11:08 AM
I have a little information on the possible origins of 60950 Annex J.
The values listed in Annex J appear to be from ASTM G82:
FWIW, I have an old copy of an IEC standard (can't remember which one), with
From: emc-pstc@ieee.orgJohn Woodgate
Sent: Tuesday, January 15, 2008 9:50 AM
Tarver, Peter writes:
I'm unconvinced that the table
is based on any valid scientific studies.
Further down, you said that the tables you reviewed relate to
brackish or sea water.
I said vast majority, to
I have a little information on the possible origins of 60950 Annex J.
Please note the following information is for reference purposes only. I am
not stating definitively that this information is the basis of Annex J, nor
I am not stating that the information in Annex J is correctly applicable to
In message
of2c9f98db.6093c7b2-on862573d1.0053bee0-862573d1.0054c...@amat.com,
dated Tue, 15 Jan 2008, lauren_cr...@amat.com writes:
Of course, the above is not binding (it can be legally disjointed from
the base legislation by means of semantic abrasion).
100 Brownie points!
--
OOO - Own
In message
5f5a140eb5cb094bb4d2c477c8c4ad99922...@sjc1amfpew04.am.sanm.corp,
dated Tue, 15 Jan 2008, Tarver, Peter peter.tar...@sanmina-sci.com
writes:
In blending search terms alodine or alodyne with mil spec, I get
1,370 hits for the former, 14 hits for the latter.
I think I'm in need of
In message
5f5a140eb5cb094bb4d2c477c8c4ad99922...@sjc1amfpew04.am.sanm.corp,
dated Tue, 15 Jan 2008, Tarver, Peter peter.tar...@sanmina-sci.com
writes:
My lack of conviction is based on the numbers in Annex J not matching
*any* of the electrochemical tables I've reviewed (not thousands, but
Alodine is an international brand name for Henkel Technologies
conversion, anodizing and functional coatings.
Alodyne would appear to be another commercial product from the US
Both have been brought into general parlance like hoover, Xerox, biro,
sellotape...
From: emc-p...@ieee.org
From: Fred Townsend
Sent: Monday, January 14, 2008 3:31 PM
I'm not an anodize or Alodyne expert but I will offer a few notes:
1.You will get more hits when looking up Alodyne if you
spell it correctly.
I agree, but this may be a cross-the-Atlantic thingy (tyre -v- tire) or even
From: John Woodgate
Sent: Monday, January 14, 2008 2:03 PM
Tarver, Peter writes:
You seem certain about this. I'm unconvinced.
I suggest you talk to a tame electro-chemist.
My lack of conviction is based on the numbers in Annex J not matching *any* of
the electrochemical tables I've
Neil,
Regarding ...is the coating mechanically separable from the base metal?
I thought the commission was rather clear on this point in their WEEE/RoHS faq
From 2.3 (page 17) - underlines are mine
Homogeneous material means a material that can not be mechanically disjointed
into
In message f49bf8e684bc6c4188d1d63513c4ca07036d4...@sparrow.dolby.net,
dated Tue, 15 Jan 2008, James, Chris c...@dolby.co.uk writes:
Coloured anodising is often much harder and is not suitable where
reliable galvanic contact is required.
It's a thicker oxide layer, usually, to get a more
Black zinc is a chromate conversion process on steel so would remain
conductive.
However anodizing and alodine or alochrom are two distinct processes on
aluminium:
Alodine/alochrom is a light chemical surface treatment of aluminium
which leaves ithe surface conductive but less prone to
My experience of chromate conversion is that all I have seen are in fact
insulating.
In general: all aluminium passivation forms an insulating layer of a thickness.
It may be possible to measure low resistance if the measurement technique
punctures the passivation layer. Even two flat surfaces
In message 478bf09b.6020...@dctolight.net, dated Mon, 14 Jan 2008,
Fred Townsend f...@dctolight.net writes:
1.You will get more hits when looking up Alodyne if you spell it
correctly. See http://en.wiktionary.org/wiki/alodyne
It's a chromic acid passivation process. This means it uses
In message
64c85c187de0f944bb7b79f01af019a034e...@mail-01.stratalight.com, dated
Mon, 14 Jan 2008, Marko Radojicic mradoji...@stratalight.com writes:
If you can visualize the impedance vs. frequency curve for a capacitor
(a V shape), increased resistance will raise the entire curve up and
the
I think you will find that Alodyne is a chromate conversion coating; Alodyne
is one trade name, Alocrom another. The yellow clour comes from the chromium.
The down side is that the jury is out on whether or not such a coating
complies with the RoHS Directive. Is there still hexavalent chromium in
Hi Don,
China doesn't use ICNIRP standard, their own standard is GB8702-88(published
in 1988).
Besides, some other standard also related to human exposure, GB9715-88,
GB12638-90, GB10436-89, GB10437-89, GB16203-96.
These standards are issued by different ministries, there is no harmonized
17 matches
Mail list logo
