Production of High-Flexural-Strength Corundum Ceramics


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Abstract

A new method was proposed to produce high-flexural-strength corundum ceramics from α-Al2O3 samples synthesized by heat treatment of boehmite AlOOH at 1300°C for 5 h. It was shown that hydrothermal treatment of MDGA-grade hydrargillite at 200°C in a 0.4 wt % magnesium acetate solution for 3 days gives finely crystalline boehmite, which is a feedstock for synthesizing corundum ceramics with a flexural strength of 400 MPa.

About the authors

G. P. Panasyuk

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Author for correspondence.
Email: panasyuk@igic.ras.ru
Russian Federation, Moscow, 119991

E. A. Semenov

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Email: irina135714@yandex.ru
Russian Federation, Moscow, 119991

I. V. Kozerozhets

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Author for correspondence.
Email: irina135714@yandex.ru
Russian Federation, Moscow, 119991

M. N. Danchevskaya

Moscow State University

Email: irina135714@yandex.ru
Russian Federation, Moscow, 119991

E. S. Lukin

Mendeleev University of Chemical Technology of Russia

Email: irina135714@yandex.ru
Russian Federation, Moscow, 125047

V. N. Belan

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Email: irina135714@yandex.ru
Russian Federation, Moscow, 119991

I. L. Voroshilov

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Email: irina135714@yandex.ru
Russian Federation, Moscow, 119991

L. A. Azarova

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Email: irina135714@yandex.ru
Russian Federation, Moscow, 119991

A. D. Izotov

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Email: irina135714@yandex.ru
Russian Federation, Moscow, 119991

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