Pressed sputtering target. | |||
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| Pressed sputtering target. Look back a few samples and you'll see a slice of the outer rim of a disk like this. After seeing how beautiful the surface of that slice was, I could not pass up the opportunity to have a full disk of the stuff. Normally these disks would have their irregular outer rim cut off (resulting in samples like he previous rind), but this one ended up slightly under-sized, making it a reject. Along with the full disk came an explanation from the source of how the disks are made. Basically they start with a tall cylinder and squash it at low temperatures (-50C) and tremendous pressure (1600 tons). The surface texture is a result of large crystal grains in the material sliding against each other. You can read all about the process in the the patent that covers it. Source: eBay seller mrj33 Contributor: Theodore Gray Acquired: 2 February, 2008 Text Updated: 23 February, 2008 Price: Anonymous Size: 13" Purity: 99.9996% | |||
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