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Title: In-situ composite formation of damage tolerant coatings utilizing laser

Patent ·
OSTI ID:1127163
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A coating steel component with a pattern of an iron based matrix with crystalline particles metallurgically bound to the surface of a steel substrate for use as disc cutters or other components with one or more abrading surfaces that can experience significant abrasive wear, high point loads, and large shear stresses during use. The coated component contains a pattern of features in the shape of freckles or stripes that are laser formed and fused to the steel substrate. The features can display an inner core that is harder than the steel substrate but generally softer than the matrix surrounding the core, providing toughness and wear resistance to the features. The features result from processing an amorphous alloy where the resulting matrix can be amorphous, partially devitrified or fully devitrified.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
Patent Number(s):
8,673,455
Application Number:
13/089,163
OSTI ID:
1127163
Country of Publication:
United States
Language:
English

References (15)

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Highly hard thin film and method for production thereof patent July 1997
Fabrication of diamond and diamond-like carbon coatings patent March 1998
Method of coating a silicon or silicide substrate patent August 2001
Method of producing metallic materials patent February 2004
Composite overlay compound patent March 2008
Pseudo-etching of diamond-like carbon coated instruments patent-application March 2002
Laser sintering process and devices made therefrom patent-application May 2004
Method of modifying iron based glasses to increase crystallization temperature without changing melting temperature patent-application December 2004
Composite overlay compound patent-application July 2006

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