Endeavour
Flashlight Enthusiast
Re: Introducing: The Flashlight Reinvented (Design
The corrosion problem is with the battery, not the aluminum.
Water is a corrosive substance. Oxygen in the air is corrosive. Salt Water is corrosive.
The problem is that you have the battery exposed to the elements, and it will rust if given the opportunity, just from sitting in the air.
Leaving it open as you have now allows water to get in between the negative contact/button of the case, and the battery ground. When this happens, current will pass through the water and complete the circuit, and will cause the battery to oxidize very quickly.
Aluminum oxidizes the instant it's exposed to air - it usually doesn't oxidize much further, since the thin layer of rust it forms protects the rest of the metal. Anodizing is an increase in the size of the oxide layer, which forms pores and it often dyed. You can make aluminum corrode into powder by covering it in mercury. (I don't recommend you try it)
Back to the main focus, however, the problem is that you're allowing water into the inner workings of the light. You must have a sealed battery compartment such that no water can enter, period, or you'll have a whole mess of problems, unfortunately.
The corrosion problem is with the battery, not the aluminum.
Water is a corrosive substance. Oxygen in the air is corrosive. Salt Water is corrosive.
The problem is that you have the battery exposed to the elements, and it will rust if given the opportunity, just from sitting in the air.
Leaving it open as you have now allows water to get in between the negative contact/button of the case, and the battery ground. When this happens, current will pass through the water and complete the circuit, and will cause the battery to oxidize very quickly.
Aluminum oxidizes the instant it's exposed to air - it usually doesn't oxidize much further, since the thin layer of rust it forms protects the rest of the metal. Anodizing is an increase in the size of the oxide layer, which forms pores and it often dyed. You can make aluminum corrode into powder by covering it in mercury. (I don't recommend you try it)
Back to the main focus, however, the problem is that you're allowing water into the inner workings of the light. You must have a sealed battery compartment such that no water can enter, period, or you'll have a whole mess of problems, unfortunately.