High Temperature Applications
Nanostrands of nickel or iron are subject to the temperature and corrosion limits of those respective elements. But if the nanostrands are treated with aluminum, in a proprietary process, and subsequently converted to either nickel aluminide or iron aluminide, they will then retain their properties to much higher temperatures. While normal nanostrands oxidize quite readily, it has been found that aluminide nanostrands do not gain weight at elevated temperatures in tests exceeding 500 hours at 500 C. Furthermore, after the test was completed, the aluminide nanostrands were still conductive and attracted to a magnet, and retained their high aspect ratio morphology.
Nickel aluminide nanostrands after 500 C for 500 hours in air. 1000 x. This material is still conductive and still magnetic.
Nanostrands of nickel or iron are subject to the temperature and corrosion limits of those respective elements. But if the nanostrands are treated with aluminum, in a proprietary process, and subsequently converted to either nickel aluminide or iron aluminide, they will then retain their properties to much higher temperatures. While normal nanostrands oxidize quite readily, it has been found that aluminide nanostrands do not gain weight at elevated temperatures in tests exceeding 500 hours at 500 C. Furthermore, after the test was completed, the aluminide nanostrands were still conductive and attracted to a magnet, and retained their high aspect ratio morphology.
Nickel aluminide nanostrands after 500 C for 500 hours in air. 1000 x. This material is still conductive and still magnetic.
