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2238 |
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Wednesday, May 05, 2010, Moor Room 9:00 AM Nanomaterial Coatings 2 |
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Improved mechanical properties of coatings and bulk components as a function of grain size |
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Robert Gansert* / Advanced Materials & Technology Services, Inc., USA Chris Melnyk/ California Nanotechnologies Inc., California Steven Schroeder/ California Nanotechnologies Inc., California David Grant/ California Nanotechnologies Inc., California Mathew Watson/ HFW Industries, New York |
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Thermal sprayed coatings produced from nano-grained and near-nano grained powders are reported to provide improved properties as compared to conventional powders. These nano- and near-nano grained materials show great potential for applications in the aerospace, oil & gas, power, and many other industries. A study is proposed to investigate the influence of grain size on mechanical properties by examining nano-, near-nano, and micro-grain sized materials. Powders, coatings and consolidated components of light alloys (aluminum, titanium), nickel-based alloys and carbides (tungsten-carbide) will be examined. Thermal spray coatings will be produced consisting of carbides consisting of various grain sizes, from near-nano and micron sized grains. An examination of consolidated forms will be performed using nano-, near-nano and micron sized grained materials. Hot isostatic pressing (HIPing) and Spark Plasma Sintering (SPS) will be used to provide the consolidation of these materials. A comparison will also be made comparing the properties of materials (e.g.,, tungsten carbide-cobalt-chromium) produced using thermal spray and bulk consolidation methods. |