Patent ID: 8883250
Filing Date: 2014-11-11
Classification: B22F,C22C,C23C,H01J

Abstract:
1. A method of rejuvenating a sputtering target, the method comprising: providing a sputtering target initially formed by ingot metallurgy or powder metallurgy and comprising a sputtering-target material, the sputtering-target material (i) comprising a metal, (ii) defining a recessed furrow therein, and (iii) having a first grain size and a first crystalline microstructure; and spray-depositing a powder within the furrow to form a layer therein, the layer (i) comprising the metal, (ii) having a second grain size finer than the first grain size, and (iii) having a second crystalline microstructure more random than the first crystalline microstructure, wherein spray-depositing the powder within the furrow forms a distinct boundary line between the layer and the sputtering-target material.