Properties of Powders, Coatings and Consolidated Components Produced from Nano- and near-Nano Crystalline Powders

Thermal sprayed coatings produced from nano-crystalline and near-nano crystalline powders provide improved properties as compared to conventional powders.  Nano- and near-nano crystalline materials show great potential for applications in the aerospace, energy, oil & gas, and many other industries.  A study is proposed to investigate the properties of near-nano and nano-crystalline powders, coatings and consolidated forms.  Powders and coatings will be produced of aluminum and titanium light alloys, a nickel-based superalloy and tungsten-carbide-10% cobalt-4% chromium from cryomilling in liquid nitrogen.  The powders and coatings will be compared to the properties of conventional powders and coatings.  Bulk properties of the consolidated forms produced from nano- and near-nano crystalline materials will be compared to bulk properties of conventional materials.  Hot isostatic pressing (HIP) and Spark Plasma Sintering (SPS) will be used to consolidate the near-nano and nano-crystalline materials.