ABSTRACT The degradation mechanism of spacecraft materials as a result of AO attack is briefly discussed.The present status of ground AO simulation testing technology is reviewed.Particular emphasis is given to the performance requirements for the selection of protective coatings,various coating materials and their durability of protecting spacecraft materials fromAO attack in the LEO environment.Further research directions and development trends are proposed.
KEY WORDS atomic oxygen(AO),Low Earth Orbit(LEO) environment,protective coatings,synergistic effect
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