Patent ID: 6264813
Filing Date: 2001-07-24
Classification: C22C,C23C

Abstract:
A cathodic sputtering target having an active part comprising the volume of said target that may be removed during cathodic sputtering operations, and is composed of a high purity aluminum alloy, in which a total content of alloy elements other than aluminum is less than 0.1% by weight and for which:contents of alloy elements are such that a starting recrystallization temperature of said aluminum alloy is at least equal to 150.degree. C.;a Cu content is not less than 5 ppm and not more than 300 ppm;a Fe content that is not less than 2 ppm and not more than 8 ppm;the active part is recrystallized at or above said starting recrystallization temperature to form grains smaller than 2 mm; andcontents of alloy elements other than aluminum are such that the electrical resistivity of said aluminum alloy measured on a sample of said recrystallized active part is less than 2.85 .mu..OMEGA. cm at 20.degree. C.