Surface hardening of titanium alloys with melting depth controlled by heat sink

Patent · 01 January 1995

OSTI ID:870092

Oden, Laurance L ^[1]; Turner, Paul C ^[1]

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1. Albany, OR

A process for forming a hard surface coating on titanium alloys includes providing a piece of material containing titanium having at least a portion of one surface to be hardened. The piece having a portion of a surface to be hardened is contacted on the backside by a suitable heat sink such that the melting depth of said surface to be hardened may be controlled. A hardening material is then deposited as a slurry. Alternate methods of deposition include flame, arc, or plasma spraying, electrodeposition, vapor deposition, or any other deposition method known by those skilled in the art. The surface to be hardened is then selectively melted to the desired depth, dependent on the desired coating thickness, such that a molten pool is formed of the piece surface and the deposited hardening material. Upon cooling a hardened surface is formed.

• Research Organization: National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV
• Assignee: United States of America as represented by Secretary of (Washington, DC)
• Patent Number(s): US 5455079
• OSTI ID: 870092
• Country of Publication: United States
• Language: English

Related Subjects

/427/148/205/228/
alloys
alternate
backside
coating
coating thickness
contacted
containing
containing titanium
controlled
cooling
dependent
deposited
deposition
deposition method
depth
desired
desired depth
electrodeposition
flame
formed
forming
hard
hard surface
hardened
hardening
heat
heat sink
material
material containing
melted
melting
melting depth
method
methods
molten
molten pool
piece
plasma
plasma spray
plasma spraying
pool
portion
process
providing
selectively
sink
skilled
slurry
spraying
suitable
suitable heat
surface
surface coating
thickness
titanium
titanium alloy
titanium alloys
vapor
vapor deposition