2021 Volume 121, p3-10
In order to increase competitiveness in the modern market of refractory products manufactured at JSC "URIR named after A. S. Berezhnoy", the Institute constantly conducts research aimed at further improving the technologies already developed for products of a wide range of compositions, including zirconia, as well as improving performance, reducing the cost of their manufacture, which are based on the use of modern raw materials and new effective additives.
In JSC "URIR named after A. S. Berezhnoy" an improved technology of higher refractoriness products from fused ZrO2, stabilized by ~ 10 % Y2O3, with using of a new plasticizing additive on a polycarbonate basis, was mastered. According to the improved technology, experimental products of an industrial format (with a total weight of ~ 4 kg) were manufactured with high performance indicators that meet the requirements of TU U 23.2-00190503- 451: 2020 (for the grade of "TsIS-1T"). These products were transferred to one of the consumers for service in single crystal growing units.
A change to the technological instruction was developed and put into effect, regulating the process of manufacturing products of higher refractoriness from fused ZrO2, stabilized by ~ 10 % Y2O3, intended for service in the single crystal growing units. This instruction provides for the use of a domestic additive grade of "LST", and, if necessary, as an alternative, imported additive on a polycarbonate basis.
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