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Title: Method of varying a physical property of a material through its depth

A method is disclosed for varying a mechanical property of a material at two depths. The method involves the application of at least two laser pulses of different durations. The method involves a determination of the density of the material from the surface to each depth, a determination of the heat capacity of the material from the surface to each depth, and a determination of the thermal conductivity of the material from the surface to each depth. Each laser pulse may affect the density, heat capacity, and thermal conductivity of the material, so it may be necessary to re-evaluate those parameters after each laser pulse and prior to the next pulse. The method may be applied to implantation materials to improve osteoblast and osteoclast activity.
Inventors:
Issue Date:
OSTI Identifier:
1178246
Assignee:
UT-Battelle, LLC (Oak Ridge, TN) ORO
Patent Number(s):
9,012,803
Application Number:
13/234,779
Contract Number:
AC05-00OR22725
Resource Relation:
Patent File Date: 2011 Sep 16
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 60 APPLIED LIFE SCIENCES

Works referenced in this record:

Bio-mimetic scaling of mechanical behavior of thin films, coatings, and surfaces by Laser Interference Metallurgy
journal, September 2005
  • Daniel, C.; John Balk, T.; Wübben, T.
  • Advanced Engineering Materials, Vol. 7, Issue 9, p. 823-826
  • DOI: 10.1002/adem.200500110

Micro-structural characterization of laser interference irradiated Ni/Al multi-films
journal, March 2005

Electrical behavior of periodically microstructured Sn/CuSn4 contact models under fretting conditions
journal, August 2004