High strength Zr (Hf or Ti)-Ta-B ceramics

Details High strength Zr (Hf or Ti)-Ta-B ceramics High strength Zr (Hf or Ti)-Ta-B ceramics

2008-03-21

2010-12-21

Mayes, Melvin C (Department: 1732)

Chemistry of inorganic compounds

Boron or compound thereof

C423S297000, C423S289000, C501S093000, C501S087000, C501S096100, C156S089110

Reexamination Certificate

active

07854912

ABSTRACT:
The crystal structure of three compositions of matter has been determined to be iso-structural with FeB ortho-rhombic (space group Pnma). The crystalline structures are: Ti0.5Ta0.5B, Zr0.5Ta0.5B and Hf0.5Ta0.5B. A process for preparing ceramics is disclosed. Molded ceramics including the compositions of matter are useful for applications such as rocket nozzles, leading edges on hypersonic missiles, engine parts and other applications requiring a structural component to operate at temperatures of 1600° C. to 2400° C.

REFERENCES:
patent: 3305374 (1967-02-01), Sucharski et al.
patent: WO 8907661 (1989-08-01), None
Levine et al.; Oxidation of ZrB2 and HfB2-based Ultra-High Temperature Ceramics: Effect of Ta additions; Journal of Material Science; 39, 5969-5977; 2004.

Affiliated with

Also associated with

Rating

High strength Zr (Hf or Ti)-Ta-B ceramics does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High strength Zr (Hf or Ti)-Ta-B ceramics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High strength Zr (Hf or Ti)-Ta-B ceramics will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4207054