Formation and investigation of plasma nanostructured hafnia coatings

Autor:	M. N. Polyansky, A. A. Ashmarin, S. V. Savushkina, E. A. Vysotina, G. V. Panasova, L. E. Agureev
Rok vydání:	2019
Předmět:	History Materials science biology Chemical engineering Plasma Hafnia biology.organism_classification Computer Science Applications Education
Zdroj:	Journal of Physics: Conference Series. 1238:012035
ISSN:	1742-6596 1742-6588
DOI:	10.1088/1742-6596/1238/1/012035
Popis:	Nanostructured coatings HfO2-9wt%Y2O3 were obtained by plasma spraying in vacuum using supersonic nozzle creating Prandtl-Mayer expansion fan. The coatings were investigated by scanning electron microscopy, X-ray diffraction analysis, and synchronous thermal analysis (differential scanning calorimetry, thermogravimetric analysis, and differential thermogravimetric analysis) in the temperature range of 40÷1600°C. The coatings are predominantly characterized by the nanostructured globular structure. Thermal analysis showed a peak corresponding to the exothermic reaction in the temperature range of 1400÷1600 °C, accompanied by a mass loss. c-HfO2 phase remained in the coating after thermal analysis with a decrease in the lattice parameter a from 5.18 Å to 5.13 Å.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::27adea01b253a8ad01e1beb94493fbf7 https://doi.org/10.1088/1742-6596/1238/1/012035 Zobrazit plný text záznamu