Abstract

An MRI compatible medical device includes a non-magnetic metal alloy portion including a first and at least a second metal. A surface of the metal alloy portion includes an integral MRI heating resistant surface structure having a thickness greater than or equal to 3 nanometers. The MRI heating resistant surface structure includes one or more of (i) a matrix phase including the first and second metal having a plurality of nanometer or micron scale particles, precipitates and/or inclusions constituting a volume fraction greater than or equal to 3%, wherein the particles, precipitates or inclusions differ in chemical composition and physical characteristics of the matrix phase and are discontinuously distributed therein; (ii) a level of crystalinity at least 5% less as compared to a level of crystalinity in the bulk of the metal alloy portion; (iii) one or more metal atoms different from the first and second metal having a concentration profile evidencing diffusion into the metal alloy portion.

Document Type

Patent

Patent Number

US 8,644,951

Application Serial Number

12/629,723

Issue Date

2-4-2014

Current Assignee

UCFRF

Assignee at Issuance

UCFRF

College

Advanced Materials Processing & Analysis Center (AMPAC)

Department

Advanced Materials Processing & Analysis Center (AMPAC)

Allowance Date

10-24-2013

Filing Date

12-2-2009

Assignee at Filing

UCFRF

Filing Type

Nonprovisional Application Record

Donated

no

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