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

• B–Ti nanoenergetic coating was assembled via electrophoretic deposition.
• Combustion test indicates quick energy releasing happened to B–Ti coating.
• Ignition of Cu bridge assembled with B–Ti coating is exciting for 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.

Micro-ignitor assembled with electrophoretic B–Ti nanoenergetic coating can be successfully ignited with huge energy output.Figure optionsDownload as PowerPoint slide