Glass for magnetic recording medium substrate, magnetic recording medium substrate, magnetic recording medium and glass spacer for magnetic recording and reproducing apparatus
US-2024321310-A1 · Sep 26, 2024 · US
US9719166B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9719166-B2 |
| Application number | US-201213528027-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 20, 2012 |
| Priority date | Jun 21, 2011 |
| Publication date | Aug 1, 2017 |
| Grant date | Aug 1, 2017 |
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Methods and related apparatus support a work piece during a physical vapor deposition. An aluminium support having a support surface coated with a heat absorbent coating is provided. The support is cooled to around 100° C. and a PVD process is performed such that, with cooling, the work piece temperature is between 350° C. and 450° C. The coating is inert and/or ultra-high voltage compatible.
Opening claim text (preview).
What is claimed is: 1. A method of supporting a workpiece during Physical Vapour Deposition (PVD), the method including: (a) providing an aluminium support having a support surface coated with a heat absorbing coating of a metal oxide film, and placing the workpiece on the metal oxide film so as to be supported by the support surface of the support; (b) cooling the support to 100° C.; and (c) executing PVD, to thereby deposit material on the workpiece, while the cooling is being carried out such that, with the cooling, the workpiece temperature is between 350° C. and 450° C. during the depositing of the material on the workpiece. 2. A method as claimed in claim 1 wherein the coating is inert and/or Ultra High Voltage compatible. 3. A method as claimed in claim 2 wherein the coating is a film of CrO x or Al 2 O 3 . 4. A method of supporting a workpiece during Physical Vapour Deposition (PVD), the method including: (a) providing an aluminium support having a support surface coated with a heat absorbing coating of CrO x or Al 2 O 3 , and placing the workpiece on the coating of CrO x or Al 2 O 3 so as to be supported by the support surface of the support; (b) cooling the support to 100° C.; and (c) executing PVD, to thereby deposit material on the workpiece, while the cooling is being carried out such that, with the cooling, the workpiece temperature is between 350° C. and 450° C. during the depositing of the material on the workpiece.
Temperature · CPC title
by application of a magnetic field, e.g. magnetron sputtering {(C23C14/3457 takes precedence)} · CPC title
Workpiece holder · CPC title
operating with cathodic sputtering (H01J37/36 takes precedence {; methods of cathodic sputtering C23C14/34}) · CPC title
Substrate holders · CPC title
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