This paper reviews various forms of environmentally induced failure of electrical contacts. Emphasis is placed on the subtle forms of corrosion that cannot be visually detected but cause intermittent failures. These intermittent failures or glitches are generally detrimental to modern high performance electronics. Common forms of subtle forms of corrosion include pore corrosion, creep and fretting. Further, means are discussed to prevent and mitigate these forms of attack in the design phase as well as during operation and maintenance.

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