Erbia-bearing core

Details Erbia-bearing core Erbia-bearing core

1997-10-30

1999-11-02

Koslow, C. Melissa

Compositions: ceramic

Ceramic compositions

Yttrium, lanthanide, actinide, or transactinide containing

501153, 501154, 501133, 501127, 501103, 106 3827, 106 382, 106 3825, 106 389, 164 41, 164464, 164520, 164529, B22C 102, B22C 910

Patent

active

059770074

ABSTRACT:
A ceramic core that includes, prior to core sintering, erbia filler material alone or admixed with a second ceramic filler material, such as alumina, and a binder to provide a core that is relatively non-reactive with superalloys used in the manufacture of turbine blades, dimensionally stable during directional solidification (DS) for extended times, removable by chemcial leaching techniques, and having enhanced X-ray detectable during post-cast inspection operations. After core sintering, the ceramic core has a microstructure comprising an erbia-alumina garnet phase and an unreacted ceramic filler phase (e.g. alumina).

REFERENCES:
patent: 3537949 (1970-11-01), Brown et al.
patent: 3994346 (1976-11-01), Brown
patent: 4040845 (1977-08-01), Richerson et al.
patent: 4065544 (1977-12-01), Hamling et al.
patent: 4171562 (1979-10-01), Freeman et al.
patent: 4703806 (1987-11-01), Lassow et al.
patent: 4837187 (1989-06-01), Frank et al.
patent: 4874725 (1989-10-01), Furukawa et al.
patent: 4947927 (1990-08-01), Horton
patent: 4966225 (1990-10-01), Johnson et al.
patent: 5145833 (1992-09-01), Prunier, Jr. et al.
patent: 5183801 (1993-02-01), Virkar et al.
patent: 5221336 (1993-06-01), Horton
patent: 5242007 (1993-09-01), Remmers et al.
patent: 5384293 (1995-01-01), Omori et al.
patent: 5407001 (1995-04-01), Yasrebi et al.
patent: 5535811 (1996-07-01), Feagin
Formation and Thermal Stability of an Oxide Dispersion in a Rapidly Solidified Ti-Er Alloy; Scripta Metallurgica, #7 vol. 17 pp. 963-966, 1983, Kohitzer et al.
The Interaction of Titanium with Refractory Oxides; Titanium Science and Technology, Plenum Press, 1973, pp. 271-284, Lyon et al.
On the Evaluation of Stability of Rare Earth Oxides as Face Coats for Investment Casting of Titanium; Metallurgical Transactions B, vol. 21B, Jun. 1990, pp. 559-566, Saha et al.

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