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:
Jan. 15, 2019
Filed:
May. 07, 2014
Massachusetts Institute of Technology, Cambridge, MA (US);
Andrew J. Detor, Albany, NY (US);
Christopher A. Schuh, Wayland, MA (US);
MASSACHUSETTS INSTITUTE OF TECHNOLOGY, Cambridge, MA (US);
Abstract
Bipolar wave current, is used to electrodeposit a nanocrystalline grain size. Polarity Ratio is the ratio of absolute value of time integrated amplitude of negative and positive polarity current. Grain size can be controlled in alloys of two or more components, at least one of which is a metal, and at least one of which is most electro-active, such as nickel and tungsten and molybdenum. Typically, the more electro-active material is preferentially lessened during negative current. Coatings can be layered, each having an average grain size, which can vary layer to layer and also graded through a region. Deposits can be substantially free of either cracks or voids.