The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Dec. 06, 2016

Filed:

Mar. 05, 2014
Applicants:

Massachusetts Institute of Technology, Cambridge, MA (US);

Nanyang Technological University, Singapore, SG;

Inventors:

Christopher A. Schuh, Wayland, MA (US);

Alan Lai, Cambridge, MA (US);

Zehui Du, Singapore, SG;

Assignees:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B 35/48 (2006.01); C04B 35/49 (2006.01); C04B 35/50 (2006.01); C04B 35/486 (2006.01); C04B 38/10 (2006.01); C04B 35/622 (2006.01);
U.S. Cl.
CPC ...
C04B 35/50 (2013.01); C04B 35/486 (2013.01); C04B 35/6225 (2013.01); C04B 35/62263 (2013.01); C04B 38/10 (2013.01); C04B 2235/3206 (2013.01); C04B 2235/3208 (2013.01); C04B 2235/3224 (2013.01); C04B 2235/3225 (2013.01); C04B 2235/3229 (2013.01); C04B 2235/76 (2013.01); C04B 2235/786 (2013.01); C04B 2235/94 (2013.01); C04B 2235/96 (2013.01); Y10T 428/298 (2015.01);
Abstract

Shape memory and pseudoelastic martensitic behavior is enabled by a structure in which there is provided a crystalline ceramic material that is capable of undergoing a reversible martensitic transformation and forming martensitic domains, during such martensitic transformation, that have an average elongated domain length. The ceramic material is configured as an oligocrystalline ceramic material structure having a total structural surface area that is greater than a total grain boundary area in the oligocrystalline ceramic material structure. The oligocrystalline ceramic material structure includes an oligocrystalline ceramic structural feature which has an extent that is less than the average elongated domain length of the crystalline ceramic material.


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