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Альтернативная кинетическая модель роста боридных слоев на стали AISI 316

М. Кеддам, П. Журчи

Аннотация


Предложена альтернативная кинетическая модель для анализа роста боридов железа на поверхности стали AISI 316 в интервале температур 1123 - 1273 К. Разработанный подход основан на классических законах Фика с учетом влияния инкубационного периода на процесс формирования боридных слоев. Рассчитана энергия активации бора для FeB и Fe2B и проведено ее сравнение с литературными данными. Выполнена экспериментальная проверка модели для борирования при 1243 К в течение 3 ч и 5 ч. Сравнение экспериментальных значений толщины слоев с прогнозируемыми по альтернативной диффузионной модели и интегральному методу показало их хорошее соответствие.

Ключевые слова


boronizing; iron borides; alternative model; kinetics; activation energy

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Литература


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