| 简介 |
PROBLEM TO BE SOLVED : To provide a method for producing an Al-based alloy sputtering target material comprising a rare earth element and a high melting point element having a melting point higher than that of Al at a high yield.
SOLUTION : The method includes : a stage where a first powder of an Al-based alloy comprising a rare earth element produced by an atomizing process is prepared; a stage where the first powder and one or more of a second powder composed of a high melting point element X having a melting point higher than that of Al are mixed; and a stage where a powdery mixture of the first powder and the second powder is made dense. In the mixing stage, the maximum particle diameter (a) of the first powder is 10 to 200 μm, the maximum particle diameter (b) of the second powder is 10 to 150 μm and the ratio between the (a) and (b), ((a)/(b)) is 0.5 to 5.
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