【摘要】 本文将正电子湮没技术用于等离子体喷涂的研究，测量了等离子体喷涂合金的缺陷以及缺陷的退火效应，观察到了正电子寿命的一些异常现象。更多还原

【Abstract】 The positron annihilation technique has been employed to study the effects of the surface treatment of de-fects and the effects of defect annealing of plasma spray alloy have been measured by this method. In this pa-per,some unusual results of the positron lifetime observed in this measurement were reported in detail.(更多还原