Studying the Hardness and Elastic Modulus of a Ceramic Material Based on Hydroxyapatite and Its Substituted Forms

I. A.  Veretennikova; E. A. Bogdanova

doi:10.17804/2410-9908.2026.3.020-034

I. A. Veretennikova, E. A. Bogdanova

STUDYING THE HARDNESS AND ELASTIC MODULUS OF A CERAMIC MATERIAL BASED ON HYDROXYAPATITE AND ITS SUBSTITUTED FORMS

DOI: 10.17804/2410-9908.2026.3.020-034

The paper studies the hardness and elastic modulus of stoichiometric and fluorine-substituted hydroxyapatite samples obtained by precipitation from solution, after pressing, and after sintering of the pressed samples at temperatures of 800 and 1000 °C. Substitutions of elements in the composition of hydroxyapatite have a significant effect on its mechanical properties. The introduction of fluoride ions is found to increase significantly the hardness of the materials. The modulus values also increase. The influence of the applied load on the obtained values is observed. A lower standard error occurs at a load of 2000 mN, indicating that the data obtained at this load are highly reliable in evaluating the true mean value of the population. The Ca₁₀(PO₄)₆F₂ sample is the most promising hardened ceramic; however, high values of standard deviation and maximum sampling error indicate a low accuracy of the obtained data. Sintering at 1000 °C significantly increases the hardness and elastic modulus values for all the samples studied; however, the high values of standard deviation and maximum sampling error indicate the instability of the mechanical properties of the sintered materials.

Acknowledgement: The work was performed under the state assignment for the IES UB RAS. The equipment of the Plastometriya shared research facilities, IES UB RAS, was used for the research.

Keywords: hydroxyapatite, fluorinated hydroxyapatite, sintering, load, hardness, elastic modulus

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И. А. Веретенникова , Е. А. Богданова

ИССЛЕДОВАНИЕ ТВЕРДОСТИ И МОДУЛЯ УПРУГОСТИ КЕРАМИЧЕСКОГО МАТЕРИАЛА НА ОСНОВЕ ГИДРОКСИАПАТИТА И ЕГО ЗАМЕЩЕННЫХ ФОРМ

В работе исследованы твердость и модуль упругости образцов стехиометрического и фторзамещенного гидроксиапатитов, полученных методом осаждения из раствора, после прессования и после спекания спрессованных образцов при температурах 800 и 1000 °С. Замещения элементов в составе гидроксиапатита оказывают значительное влияние на его механические свойства. Установлено, что введение фторид-ионов приводит к существенному увеличению твердости материалов. Значения модуля так же увеличиваются. Прослеживается влияние прикладываемой нагрузки на получаемые значения. Меньшая стандартная ошибка наблюдается при нагрузке 2000 мН, показывая, что полученные данные при этой нагрузке имеют высокую надежность при оценке истинного среднего значения совокупности. Наиболее перспективной упрочненной керамикой является образец Ca₁₀(PO₄)₆F₂, однако высокие значения стандартного отклонения и предельной ошибки выборки указывают на невысокую точность полученных данных. Спекание при 1000 °C позволяет значительно повысить значения твердости и модуля упругости всех исследуемых образцов, однако высокие значения стандартного отклонения и предельной ошибки выборки указывают на нестабильность механических свойств спеченных материалов.

Благодарность: Работа выполнена в соответствии с государственным заданием ИМАШ УрО РАН. Исследования проведены с использованием оборудования ЦКП «Пластометрия» ИМАШ УрО РАН.

Ключевые слова: гидроксиапатит, фторзамещенный гидроксиапатит, спекание, нагрузка, твердость, модуль упругости

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Библиографическая ссылка на статью

A. Veretennikova I., Bogdanova E. A. Studying the Hardness and Elastic Modulus of a Ceramic Material Based on Hydroxyapatite and Its Substituted Forms // Diagnostics, Resource and Mechanics of materials and structures. - 2026. - Iss. 3. - P. 20-34. -
DOI: 10.17804/2410-9908.2026.3.020-034. -
URL: http://dream-journal.org/issues/2026-3/2026-3_576.html
(accessed: 26.09.2026).