Multilayer nanolaminates containing polycrystalline zirconia

Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...

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428610, 428627, 428632, 428635, 428698, 428702, B32B 900

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054727952

ABSTRACT:
Layers of zirconium oxide and another ceramic, such as alumina or silicon carbide, are sequentially deposited on a support to form a nanolaminate containing a thin layer of polycrystalline metastable tetragonal zirconia deposited on the support. A process for making a nanolaminate material of the invention is carried out by sputter deposition. Zirconia is deposited on the chosen support by vacuum sputter deposition under conditions effective to form a thin layer of polycrystalline, metastable tetragonal zirconia on the support. A hard ceramic such as alumina is then deposited on the support by vacuum sputter deposition under conditions effective to form a thin layer of hard ceramic superposed on the zirconia layer.

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