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

Patent · Sun Jan 01 00:00:00 EST 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 (NETL), Pittsburgh, PA, Morgantown, WV (United States)
• 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

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