If you need assistance, please send an email to forum at 4hv dot org. To ensure your email is not marked as spam, please include the phrase "4hv help" in the subject line. You can also find assistance via IRC, at irc.shadowworld.net, room #hvcomm.
Support 4hv.org!
Donate:
4hv.org is hosted on a dedicated server. Unfortunately, this server costs and we rely on the help of site members to keep 4hv.org running. Please consider donating. We will place your name on the thanks list and you'll be helping to keep 4hv.org alive and free for everyone. Members whose names appear in red bold have donated recently. Green bold denotes those who have recently donated to keep the server carbon neutral.
Special Thanks To:
Aaron Holmes
Aaron Wheeler
Adam Horden
Alan Scrimgeour
Andre
Andrew Haynes
Anonymous000
asabase
Austin Weil
barney
Barry
Bert Hickman
Bill Kukowski
Blitzorn
Brandon Paradelas
Bruce Bowling
BubeeMike
Byong Park
Cesiumsponge
Chris F.
Chris Hooper
Corey Worthington
Derek Woodroffe
Dalus
Dan Strother
Daniel Davis
Daniel Uhrenholt
datasheetarchive
Dave Billington
Dave Marshall
David F.
Dennis Rogers
drelectrix
Dr. John Gudenas
Dr. Spark
E.TexasTesla
eastvoltresearch
Eirik Taylor
Erik Dyakov
Erlend^SE
Finn Hammer
Firebug24k
GalliumMan
Gary Peterson
George Slade
GhostNull
Gordon Mcknight
Graham Armitage
Grant
GreySoul
Henry H
IamSmooth
In memory of Leo Powning
Jacob Cash
James Howells
James Pawson
Jeff Greenfield
Jeff Thomas
Jesse Frost
Jim Mitchell
jlr134
Joe Mastroianni
John Forcina
John Oberg
John Willcutt
Jon Newcomb
klugesmith
Leslie Wright
Lutz Hoffman
Mads Barnkob
Martin King
Mats Karlsson
Matt Gibson
Matthew Guidry
mbd
Michael D'Angelo
Mikkel
mileswaldron
mister_rf
Neil Foster
Nick de Smith
Nick Soroka
nicklenorp
Nik
Norman Stanley
Patrick Coleman
Paul Brodie
Paul Jordan
Paul Montgomery
Ped
Peter Krogen
Peter Terren
PhilGood
Richard Feldman
Robert Bush
Royce Bailey
Scott Fusare
Scott Newman
smiffy
Stella
Steven Busic
Steve Conner
Steve Jones
Steve Ward
Sulaiman
Thomas Coyle
Thomas A. Wallace
Thomas W
Timo
Torch
Ulf Jonsson
vasil
Vaxian
vladi mazzilli
wastehl
Weston
William Kim
William N.
William Stehl
Wesley Venis
The aforementioned have contributed financially to the continuing triumph of 4hv.org. They are deserving of my most heartfelt thanks.
and then wrote a paper on why it could be ----> look at attached PDF
I want to hear your theory! This still bothers me, because I doubt it was ozone that did all of that.
and poor laboratory procedures caused that to happen as well.....I didnt have adequate ventilation, I was ignoring the rising levels of Ozone, and my lab is a horrible mess, and I was half asleep when arcing.....so I plan to clean up the lab next week after my short vacation to Mexico :D
Registered Member #27
Joined: Fri Feb 03 2006, 02:20AM
Location: Hyperborea
Posts: 2058
I have had that happen once after an accident with a container of hydrochloric acid that broke and ruined a whole room. Everything rusted like in the pictures and rust was turning up years later.
Registered Member #8
Joined: Thu Feb 02 2006, 04:34AM
Location: Harlowton, MT, United States
Posts: 214
I too have had that happen from being careless with open containers of hydrochloric acid. It doesn't take much. The best defense is to keep exposed steels oiled, as they really ought to be regardless.
Registered Member #543
Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
You can sometimes see them steaming.... if you place an open bottle of HCl by an open bottle of ammonia, dense white fumes are produced, which shows you how much of both are entering the atmosphere from the open bottles.
Registered Member #2123
Joined: Sat May 16 2009, 03:10AM
Location: Bend, Oregon
Posts: 312
I'll third that on the open HCl tank being a likely cause. Concentrated Hydrochloric acid (30%) releases lots of HCl gas. You should have that tank under a exhausted containment hood and run the exhaust through a water spray scrubber with some Sodium Bicarbonate added to neutralize it.
HCl eats more than just metal, it re-hydrolyzes in the lungs to form weak acid that damages lung tissue resulting in pulmonary edema and worse.
If an exhausted hood is not practical, keep the HCl tank tightly covered when not in use, and sequester it from the rest of your lab. Also wear an acid fumes respirator and safety glasses. around it.
BTW, Nitrogen Dioxide is another byproduct of electric arcs, and promotes corrosion.
Thanks everyone for the feedback, it sounds like the real cause was the exposed echant tank.....sadly I left it open and am in Mexico right now on vacation......that means that if any HCl is left in there more corrosion may occur :(
Registered Member #1262
Joined: Fri Jan 25 2008, 05:22AM
Location: Maryland, USA
Posts: 451
Reminds me a lot of the strange incident I had with warm potassium hydroxide solution and a wooden lamp not that long ago...
Here is an easy test to see if it indeed HCl causing all that problem (which it fairly well looks like). Try dissolving some of that "rust" in warm water. Both FeCl2 and FeCl3 are soluable in water to some degree, where as Fe2O3 and FeO are totally insoluable.
Registered Member #193
Joined: Fri Feb 17 2006, 07:04AM
Location: sheffield
Posts: 1022
The mixture of so called basic chlorides FeClx(OH)2-x and FeClx(OH)3-x will not be very soluble. You might leach enough chloride out of them with distilled water to test with silver nitrate.
Registered Member #1497
Joined: Thu May 22 2008, 05:24AM
Location: Toronto, Ontario, Canada
Posts: 801
I use the CuCl2/H2O2 etch method and I recently had to top up my etchant with more acid, a few days later, a few things turned a bit rusty nearby. The stuff is pervasive and eats anything, so try to keep anything strong enough to fume outside.
This site is powered by e107, which is released under the GNU GPL License. All work on this site, except where otherwise noted, is licensed under a Creative Commons Attribution-ShareAlike 2.5 License. By submitting any information to this site, you agree that anything submitted will be so licensed. Please read our Disclaimer and Policies page for information on your rights and responsibilities regarding this site.
A Rusting Problem: Rust Everywhere!
