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.
Patent No.:
Date of Patent:
May. 08, 2018
Filed:
Jan. 20, 2016
National Technology & Engineering Solutions of Sandia, Llc, Albuquerque, NM (US);
Enrique J. Lavernia, Laguna Beach, CA (US);
Baolong Zheng, Woodland, CA (US);
Yizhang Zhou, Irvine, CA (US);
Todd Monson, Albuquerque, NM (US);
Enrique J. Lavernia, Laguna Beach, CA (US);
Baolong Zheng, Woodland, CA (US);
Yizhang Zhou, Irvine, CA (US);
National Technology & Engineering Solution of Sandia, LLC, Albuquerque, NM (US);
Abstract
Bulk iron nitride can be synthesized from iron nitride powder by spark plasma sintering. The iron nitride can be spark plasma sintered at a temperature of less than 600° C. and a pressure of less than 600 MPa, with 400 MPa or less most often being sufficient. High pressure SPS can consolidate dense iron nitrides at a lower temperature to avoid decomposition. The higher pressure and lower temperature of spark discharge sintering avoids decomposition and limits grain growth, enabling enhanced magnetic properties. The method can further comprise synthesis of nanocrystalline iron nitride powders using two-step reactive milling prior to high-pressure spark discharge sintering.