Changes in the phase composition of oxide layers produced by microarc oxidation on Al-Si and Mg alloys induced by additions of SiO2 nanoparticles to the electrolyte

摘要

In oxide layers produced by microarc oxidation on Al-Si- and Mg-based alloys, addition of nano-dispersed silicon dioxide to the electrolyte was found to cause a shift in the phase composition toward high-temperature phases and ultra-high-pressure phases. For the first time, ultra-high-pressure phases were detected in oxide layers formed by microarc oxidation on AK6M2 alloy (stishovite) and commercially pure magnesium MG96 (wadsleyite).