ACCELERATED LIFE TESTING OF METAL-PARTICLE TAPE

For the past 50 years the magnetic material of rape has been made from a very fine powder of iron oxide. Over that period of time tests have been carried out to determine how tape deteriorates with time. Temper ature, humidity, and the presence of chemical compounds all influence the life of the tape. This article describes the accelerated tests con ducted on metal particle D-2 tape for television and data recording. T he objectives of the tests were to determine the effect on error rate of D-2 tape and measure the corrosive effects, using a calibrated meth od, when the tape is subjected to corrosive pollutants. The results ar e compared with metal-oxide tape and chromium-dioxide tape subjected t o identical exposure.