### condition | deterioration:

Corrosion
* Most corrosion leads to lower water pressure
* Some corrosion affects integrity
  - structural integrity
  - is caused by moisture.
  * ' is the breakdown of materials due to reactions within its area. It is the loss of water and air molecules. Corrosion also occurs when an acidic or basic material touches another material. When a material corrodes, it changes it and becomes weaker. Materials that corrode include iron, copper, plastic, skin cells and wood. Also ,corrosion form of erosion
* also can be the result of microbiological organisms such as bacteria, fungus, and algae
  - cause depressions in the floor, or tiny pinholes
  - plagues American industry
  - releases dissolved metal into the bloodstream, which is undesirable
* always increases with additional heat
  - an increase in product or face temperature
  - increasing temperature
* begins in microscopic proportions.
* can also attack the integrity of the source pool itself
  - be a direct result of acidic oxidation
* can cause failure of pipes, tanks, etc
  - long term damage, and can help the water pump to fail
  - occur between the metal of the crown and any underlying metal eg amalgam
* can occur during chip fabrication because of exposure to rinse solvents
  - millisecond events in the waveform
  - electrochemically, and can be enhanced microbiologically
  - from water that is high in acidity and high in temperature
  - in both low temperature and elevated temperature environments
* can occur in the fuse holder on bikes used in all weathers
  - storage tank and on boiler fireside surfaces
  - when water reacts with metal plumbing
  - pit the metal bores of the master cylinder, slave cylinders and ABS components
  - reduce the life-span of equipment by years, requiring expensive replacement
* causes weakening, and when a solder joint is affected can contribute to sagging.
* chemical reaction and therefore corrosion increases with temperature.
* common cause of instrument malfunction.
* complex phenomenon.
* constant problem for aluminum aircraft
  - with all civil and military aircraft
* continues at slower rate on silver phase.
* contributes to corrosion.
* degrades metal alloys with chemical or electro-chemical reactions.
* general term that indicates the conversion of a metal into a soluble compound.
* increases with increasing temperatures
* is affected by the properties of both the metal or alloy and the environment
  - always a concern with sewer pipes
  - an electro chemical reaction that results in a loss of metal at the cathode
  - another oxidation reaction, occurring when metal is in contact with oxygen
  - caused by the introduction of moisture into the fork
  - chemical processes
  - inhibited between mating threads
  - metal's prime enemy when it comes to longevity
  - more prevalent in coastal areas, but it can be started by other processes
  - one of the largest causes of latent or field defects
  - reduced by adding oxygen scavenging chemicals to the boiler water
  - simply oxidation
* is the dissolving of rock by carbonic acid in sea water
  - enemy of the parking brake
  - primary life-limiting plant degradation mechanism
* is the unwanted breakdown and weakening of a material due to chemical reactions
  - oxidation of metals resulting in metal oxides
* leads to lower pressure
* major problem for all wheel systems
  - specially when deicing has to be done
* natural process by which metals attempt to return to their original or state.
* occurs at the anodic areas
  - in regions of low gold content
  - slowly when soot and ash deposits are in contact with metal for some time
  - when the aqueous phase is transported over the metal surface
  - with the other metals in a cooling system, copper, iron, aluminum etc
* only occurs at the anodes where the current leaves and enter the soil.
* poses problems
  - serious problems
* presents the biggest threat to a water's heat.
* problem during the rainy season
  - in virtually all concrete structures
* refers to any process involving the deterioration or degradation of metal components
  - the deterioration of metals
* requires oxygen and moisture.
* serious problem in air transport fleet which is rapidly aging.
* takes place through an electrochemical cell
  - when the salt water of the sea dissolves the mineral in some forms of rock
  - places
* tends to happen because the organic material in the sewage gives off hydrogen sulfide.
* usually is due to water solutions that have degraded, allowing the conductivity to rise
  - occurs slowly