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A D V A N C E D
M A T E R I A L S
&
P R O C E S S E S |
O C T O B E R
2 0 1 5
1 1
NEW ALLOY SHOWS PROMISE
IN HIGH-PRESSURE OXYGEN
SYSTEMS
ToughMet, a high-performance
copper-nickel-tin alloy, developed by
Materion Corp., Mayfield Heights, Ohio,
provides many advantages in demand-
ing end-use applications ranging from
aerospace sleeve and spherical bear-
ings to oil and gas drilling components
to industrial bearings. Now, testing
shows that ToughMet may also be suit-
able for high-pressure oxygen systems
where a combination of properties
such as high strength, wear, galling,
and corrosion resistance along with
oxygen flammability resistance are re-
quired. Recently, the NASAWhite Sands
Test Facility, Las Cruces, N.M., complet-
ed ASTM G124 testing on the ToughMet
3 alloy. Results indicate that Tough-
Met 3 is burn resistant up to at least
10,000 psig (68.9 MPa) gaseous oxygen,
which is typically the highest pressure
for such tests. .
METALLIC GLASS RESEARCH
MAKES HEADWAY DOWN
UNDER
Creating futuristic, next genera-
tion materials called metallic glass that
are ultra-strong and ultra-flexible will
become easier and less expensive, say
researchers at the University of New
South Wales, Australia. While still be-
ing metals, these materials become as
malleable as chewing gum when heat-
ed and can be easily molded or blown
like glass. They are also three times
stronger and harder than ordinary
metals, on average, and are among the
toughest materials known.
Most metals are crystalline when
solid, with their atoms arranged in a
highly organized and regular manner.
Metallic glass alloys, however, have a
highly disordered structure, with the
atoms arranged in a non-regular way.
Researches created a unique new
model of the atomic structure of me-
tallic glass, which allows scientists to
predict the metal combinations that
will have glass-forming ability. Their
model has been used to successfully
predict more than 200 new metallic
glass alloys based on magnesium, sil-
ver, copper, zinc, and titanium in the
past few years. “With our new instruc-
tion manual we can start to create
many new useful metallic glass-types
and begin to understand the atom-
ic fundamentals behind their excep-
tional properties. We will also be able
to engineer these materials on an
atomic scale so they have the specific
properties we want,” says Kevin Laws
from UNSW. For more information:
Kevin Laws, +610.293.855.234,
, .
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