Structure and Mechanical Properties of Hafnium Doped with Yttrium Oxide

Authors S.V. Chornobuk , M.I. Cherednyk , O.Yu. Popov

Taras Shevchenko National University of Kyiv, 4, Hlushkov Ave., 03022 Kyiv, Ukraine

Issue Volume 9, Year 2017, Number 1
Dates Received 30 December 2016; revised manuscript received 17 February 2017; published online 20 February 2017
Citation S.V. Chornobuk, M.I. Cherednyk, O.Yu. Popov, J. Nano- Electron. Phys. 9 No 1, 01031 (2017)
DOI 10.21272/jnep.9(1).01031
PACS Number(s) 61.43.Gt, 61.72.Y
Keywords Hafnium (3) , Yttrium oxide, Structure (105) , Microcracking, Microstress, Microhardness (2) .
Annotation The influence of Y2O3 nanoparticles on structure and mechanical properties of hafnium is investigated. Scanning electron microscopy and energy dispersive analysis showed that yttria nanoparticles melt in vacuum arc forming interstitial solution Hf (Y, O). Samples structure investigation showed the growth of internal microstresses which causes material cracking with Y2O3 concentration higher than 0.3 wt. %. Hafnium microhardness is shown to be increasing with yttria content.

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