Sub-Provincial Income Disparity in Canada: Evidence From 1992 to 1999
2003
The present invention provides a composite aluminum plate suitable as a target for coating purposes, said plate comprising a surface layer melted on the basis of pure aluminum (Al>/=99.99), optionally consisting of a pure alloy, e.g., the members of which have a purity greater than or equal to 99.99%, melted on the basis of pure aluminum (Al>/=99.99); and (2) a supporting layer comprising a hardenable aluminum alloy having a Brinell hardness index HB of at least about 50 after being heat-treated under suitable conditions. This invention further provides a target suitable for physical or sputter coating processes, such as cathodic sputtering and magnetron sputtering. Methods for preparing such a plate and target are also provided.
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