Electrophoretic assembly of B-Ti nanoenergetic coating for micro-ignitor application

B-Ti nanoenergetic coating has received great attention on its high theoretical heat of reaction up to 5525 J g(-1), which have great potential in enhancing the energy output of various function devices, including the micro-igniter device. In this work, B-Ti nanoenergetic coating was successfully fabricated via electrophoretic co-assembling of boron nanoparticles and titanium nanoparticles in a mixed solvent of ethanol-acetylacetone (1:1 in volume) containing 0.2 mM nitric acid. When electrophoretic deposition (EPD) were performed at higher concentration of B and Ti nanoparticles, more nitric acid is needed for sufficient surface charging. DSC curves show that the values of heat release in electrophoretic B-Ti nanoenergetic coating is 3329 J g-1. A violent and quick energy releasing of the B-Ti coating is successfully confirmed by the combustion test. With a significant enhancement in energy output by the electrophoretic B-Ti nanoenergetic coating, electro-thermal Cu bridge can be successfully ignited, exhibiting an exciting improvement in micro-ignitor application. (C) 2016 Elsevier B.V. All rights reserved.