Variation of surface morphology of material uplift near flash-healed Vickers indents under direct-current electric field in cubic zirconia single crystals

Flash events can cause rapid mass diffusion ff usion through instantaneous power spikes that occur in electric fi elds at temperatures above certain thresholds. Recent research suggests that such mass diffusion ff usion caused by the event may include athermal effects ff ects in addition to Joule heating due to the power spikes. However, this perspective has not been applied to surface diffusion, ff usion, one of the mass diffusion ff usion pathways. This study examines athermal effect ff ect on surface diffusion ff usion during the fl ash event by analyzing the surface morphology variation material uplift formed after the fl ash-/thermal / thermal-healing of Vickers-indentation-induced microcracks. The results show that the formation of surface facet structures, one of the material uplift surface morphologies, varies depending on the direction of the direct current (DC) electric fi eld. The direction dependence of the structure formed on the material up-lifted surface due to the DC electric fi eld is a result of the electric fi eld effect. ff ect. The athermal effects ff ects associated with fl ash events can be considered to exist also in mass diffusion ff usion involving surface diffusion. ff usion.