Gold or platinum target, and production method for same
The purpose of the present invention is to reduce the average crystal grain size of gold or platinum in a target in order to enhance the consistency of film deposition characteristics during sputtering, and to fabricate a target having uniform average crystal grain size in in-plane directions of the...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The purpose of the present invention is to reduce the average crystal grain size of gold or platinum in a target in order to enhance the consistency of film deposition characteristics during sputtering, and to fabricate a target having uniform average crystal grain size in in-plane directions of the target surfaces and in the thickness direction of the target. This production method for a gold or platinum target has: an ingot fabrication step for casting molten gold or platinum to obtain an ingot; a primary forging step for forging the ingot in a first temperature range; a step for cooling the primary-forged ingot to a second temperature lower than the first temperature range; a secondary forging step for determining six directions, and further forging the cooled primary-forged ingot from the six directions in the second temperature range; a cross-rolling working step for adjusting the secondary-forged ingot to a third temperature range and carrying out cross-rolling working, producing a target shape; and a h |
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