Effect of Nanosize SiO Particles Added into Electrolyte on the Composition and Morphology of Oxide Layers Formed in Alloy AK6M2 Under Microarc Oxidizing.

Krishtal, M.; Ivashin, P.; Yasnikov, I.; Polunin, A.

Oxide layers formed on AK6M2 aluminum-silicon alloy by microarc oxidizing (MO) are studied. The chemical and phase compositions and the morphology of the layers deposited from a base-composition electrolyte with different contents of added SiO powder are determined. It is shown that high-temperature phases form in the oxide layer at a specific concentration of SiO nanoparticles. This indicates elevation of the effective temperature in the zone of synthesis of the oxide layers in the process of MO. The addition of nanosize particles of SiO into the electrolyte influences positively the operating characteristics of the formed oxide layer.

SILICA nanoparticles; NANOCRYSTALS; ELECTROLYTES; CRYSTAL morphology; OXIDIZING agents

Metal Science & Heat Treatment, 2015, Vol 57, Issue 7/8, p428

0026-0673

Academic Journal

10.1007/s11041-015-9900-8