Method for obtaining a zirconia based item

Details Method for obtaining a zirconia based item Method for obtaining a zirconia based item

1997-07-28

1999-01-26

Marcantoni, Paul

Compositions: ceramic

Ceramic compositions

Refractory

206301, 248114, 368 88, C04B 3548

Patent

active

058638490

ABSTRACT:
A finished or semi-finished item in sintered zirconia is characterized by a metallic appearance obtained by placing a previously shaped and sintered zirconia item in its finished or semi-finished shape in an oven in which there is a plasma containing hydrogen, bringing the item to a temperature of around 800.degree. C. or more, and maintaining the item at this temperature for a period of time from around a quarter of an hour to three hours, preferably two hours.

REFERENCES:
patent: 5624486 (1997-04-01), Schmid et al.
XPS Investigations of the Interactions of Hydrogen with Thin Films of Zirconium Oxide. II Effects of heating a 26 Ang thick film after treatment with a Hydrogen Plasma Li et al. Appl. Surf Sci 89 (3), pp. 263-269, 1995.
"Spraying by Plasma Jet", Kitaev et al Porosh Met. (1968) 8(6) pp. 14-20, 1968.

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