The influence of the reducing environment on the structure and physicomechanical properties of ceramics of the ZrO2–Y2O3–Al2O3–NiO–CuO - Ya. Podhurska; B. D. Vasyliv; O. P. Ostash; I. A. Danilenko; A. V. Shylo; V. V. Burkhovetskyi (Materials Science (Physicochemical mechanics of materials), 2020)