Stock material or miscellaneous articles – Composite – Of inorganic material
Patent
1994-04-25
1997-10-14
Turner, Archene
Stock material or miscellaneous articles
Composite
Of inorganic material
428697, 428699, 428702, 501103, 501104, C04B 3548
Patent
active
056770723
ABSTRACT:
A method for preparing a ceramic article comprising compacting a particulate alloy of a primary oxide and a secondary oxide to form a blank, and sintering the blank in contact with substantially pure zirconium oxide. The primary oxide is zirconium oxide and the secondary oxide is selected from the group consisting of MgO, CaO, Y.sub.2 O.sub.3, Sc.sub.2 O.sub.3, rare earth oxides and combinations thereof. Ceramic articles produced have tetragonal phase cores and monoclinic cases.
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Druschitz, Alan et al; Journal of American Ceramic Society, vol. 72(9), (1989), pp. 1591-1597 discusses hot isostatic pressing of tetragonal zirconia.
Birkby et al; Journal of European Ceramic Society, vol. 5, (1989), pp. 37-45 discloses surface transformation of tetragonal zirconia.
Miyamoto et al; High Performance Ceramic Films and Coatings, Editor P. Vincenzini, Elsevier Science Publishers. B.V. (1991) discloses hot isostatic pressing of tetragonal zirconia.
Fleischer et al; J. Mater Res., vol. 5, No. 2, (Feb. 1990), pp. 385-391 discloses ion implantation of zirconia.
Hioki et al; Advances in Ceramics, vol. 24, (1988), pp. 679-690 discloses ion implantation of zirconia with phase transformation.
Majumdar et al; Journal of Applied Physics, vol. 70, No. 2 (Jul. 15, 1991), pp. 988-992 is of background interest only.
"YTTRIA STABILIZED ZIRCONIA", Product Series Profile, Z-TECH Corporation, Jan. 1990 is of background interest only.
Chatterjee Dilip Kumar
Ghosh Syamal K.
Majumdar Debasis
Eastman Kodak Company
Rosenstein Arthur H.
Turner Archene
Walker Robert Luke
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