Author Topic: Galvanic Corrosion HELP !!  (Read 4401 times)

billt

  • Top Forum Member
  • *****
  • Posts: 6760
  • Liked:
  • Likes Given: 454
Re: Galvanic Corrosion HELP !!
« Reply #10 on: April 17, 2021, 11:04:31 AM »
https://www.swisco.com/discussions/Electrolysis-damage-on-sliding-glass-door-77-71589

Looks like a similar issue where chemicals in the concrete create an issue.

That looks like it exactly.

billt

  • Top Forum Member
  • *****
  • Posts: 6760
  • Liked:
  • Likes Given: 454
Re: Galvanic Corrosion HELP !!
« Reply #11 on: April 17, 2021, 11:19:41 AM »
OK, here is what I'm looking at. Bear with me here, because I only know enough about electricity to be dangerous. But as you can see, I'm getting some type of current flow. With the meter set on the "DCV 200M" scale, (whatever that is), the reading is 0 with the leads touching nothing but the laminate flooring.

Then when I stick the leads into the yellow crap, it reads -112. So there has to be some type of current flow taking place. The bottom picture is the outside of the slider. The corrosion in the inside track, is right where the shower head of the sprinkling can is located. My electrical box is located right on the corner outside wall. The 2 junction boxes to the right of the hose bib are for telephone and Internet.

My power comes in by overhead wire. I have no idea what the elbow is coming out of the ground and into the house, right under the main breaker box.






crusader rabbit

  • Top Forum Member
  • *****
  • Posts: 2709
  • DRTV Ranger
  • Liked:
  • Likes Given: 26
Re: Galvanic Corrosion HELP !!
« Reply #12 on: April 17, 2021, 03:25:54 PM »
https://www.swisco.com/discussions/Electrolysis-damage-on-sliding-glass-door-77-71589

Looks like a similar issue where chemicals in the concrete create an issue.

That makes sense to me.

Crusader Rabbit
“I’ve lived the literal meaning of the ‘land of the free’ and ‘home of the brave.’ It’s not corny for me. I feel it in my heart. I feel it in my chest. Even at a ball game, when someone talks during the anthem or doesn’t take off his hat, it pisses me off. I’m not one to be quiet about it, either.”  Chris Kyle

TAB

  • DRTV Rangers
  • Top Forum Member
  • *
  • Posts: 9964
  • Liked:
  • Likes Given: 92
Re: Galvanic Corrosion HELP !!
« Reply #13 on: April 17, 2021, 04:50:28 PM »
OK, here is what I'm looking at. Bear with me here, because I only know enough about electricity to be dangerous. But as you can see, I'm getting some type of current flow. With the meter set on the "DCV 200M" scale, (whatever that is), the reading is 0 with the leads touching nothing but the laminate flooring.

Then when I stick the leads into the yellow crap, it reads -112. So there has to be some type of current flow taking place. The bottom picture is the outside of the slider. The corrosion in the inside track, is right where the shower head of the sprinkling can is located. My electrical box is located right on the corner outside wall. The 2 junction boxes to the right of the hose bib are for telephone and Internet.

My power comes in by overhead wire. I have no idea what the elbow is coming out of the ground and into the house, right under the main breaker box.






  that is either power going some where or your ground.   

112 volts tells me its getting power tk the al track some where.

I am headed down that way this fall, if you can wait that long I am sure a few good steaks could convince  me to rip out the door.
I always break all the clay pigeons,  some times its even with lead.

alfsauve

  • Semper Vigilantes
  • Top Forum Member
  • *****
  • Posts: 7183
  • DRTV Ranger
  • Liked:
  • Likes Given: 447
Re: Galvanic Corrosion HELP !!
« Reply #14 on: April 18, 2021, 01:51:42 PM »
That 112 milliVolts.   112/1000Volts.  Not dangerous but definitely a current flow capable of supporting a slow galvanic action. 

I'd start with a ground rod at your meter.

Will work for ammo
USAF MAC 437th MAW 1968-1972

Sponsor

  • Guest
Re: Galvanic Corrosion HELP !!
« Reply #15 on: Today at 06:30:07 AM »

PegLeg45

  • NRA Life, SAF, Constitutionalist
  • Top Forum Member
  • *****
  • Posts: 13068
  • DRTV Ranger
  • Liked:
  • Likes Given: 1014
Re: Galvanic Corrosion HELP !!
« Reply #15 on: April 20, 2021, 11:35:04 AM »
That 112 milliVolts.   112/1000Volts.  Not dangerous but definitely a current flow capable of supporting a slow galvanic action. 

I'd start with a ground rod at your meter.

This.

Possibly multiple culprits acting together as a chain reaction.

My number one suspect for initializing the process was the potential for past pressure washing with certain chemicals that react with aluminum (bleach, for one and many household cleaners).
If some previous owner had the hose pressure washed, it could have blown enough liquid into a poor door seal and with the small voltage present, started the reaction that normally wouldn't react, sans liquid.
"I expect perdition, I always have. I keep this building at my back, and several guns handy, in case perdition arrives in a form that's susceptible to bullets. I expect it will come in the disease form, though. I'm susceptible to diseases, and you can't shoot a damned disease." ~ Judge Roy Bean, Streets of Laredo

For the Patriots of this country, the Constitution is second only to the Bible for most. For those who love this country, but do not share my personal beliefs, it is their Bible. To them nothing comes before the Constitution of these United States of America. For this we are all labeled potential terrorists. ~ Dean Garrison

"When it comes to the enemy, just because they ain't pullin' a trigger, doesn't mean they ain't totin' ammo for those that are."~PegLeg

tombogan03884

  • Guest
Re: Galvanic Corrosion HELP !!
« Reply #16 on: April 20, 2021, 01:38:26 PM »
This.

Possibly multiple culprits acting together as a chain reaction.

My number one suspect for initializing the process was the potential for past pressure washing with certain chemicals that react with aluminum (bleach, for one and many household cleaners).


Simple Green makes a cleaner just for aluminum.

alfsauve

  • Semper Vigilantes
  • Top Forum Member
  • *****
  • Posts: 7183
  • DRTV Ranger
  • Liked:
  • Likes Given: 447
Re: Galvanic Corrosion HELP !!
« Reply #17 on: April 20, 2021, 02:10:10 PM »
I wonder if vinegar based glass cleaners dripping down their could have contributed.   

(Only Perfect Glass for us now.  Vinegar also harms mirror coatings, bts.)
Will work for ammo
USAF MAC 437th MAW 1968-1972

PegLeg45

  • NRA Life, SAF, Constitutionalist
  • Top Forum Member
  • *****
  • Posts: 13068
  • DRTV Ranger
  • Liked:
  • Likes Given: 1014
Re: Galvanic Corrosion HELP !!
« Reply #18 on: April 20, 2021, 06:44:03 PM »
I wonder if vinegar based glass cleaners dripping down their could have contributed.   

(Only Perfect Glass for us now.  Vinegar also harms mirror coatings, bts.)

Vinegar will etch aluminum.... it's one of the things you can pre-treat raw aluminum with to help paint stick better. It might have taken a little longer because the aluminum was anodized, but it'd do it.
Bleach is straight-up corrosive, but it takes time too.
I've seen old farm houses with the aluminum siding that was popular in the late 40's-60's that had the drain lines for the washer ran through the wall onto the ground instead of to the septic system and years of bleach use had eaten the siding away.
"I expect perdition, I always have. I keep this building at my back, and several guns handy, in case perdition arrives in a form that's susceptible to bullets. I expect it will come in the disease form, though. I'm susceptible to diseases, and you can't shoot a damned disease." ~ Judge Roy Bean, Streets of Laredo

For the Patriots of this country, the Constitution is second only to the Bible for most. For those who love this country, but do not share my personal beliefs, it is their Bible. To them nothing comes before the Constitution of these United States of America. For this we are all labeled potential terrorists. ~ Dean Garrison

"When it comes to the enemy, just because they ain't pullin' a trigger, doesn't mean they ain't totin' ammo for those that are."~PegLeg

Timothy

  • Guest
Re: Galvanic Corrosion HELP !!
« Reply #19 on: April 20, 2021, 06:58:13 PM »
Don’t cook tomato based sauce in aluminum pots! 

Same thing...

 

SMF spam blocked by CleanTalk