НПК «Механобр-техника», г. Санкт-Петербург, РФ:

Черкасова М. В., ведущий научный сотрудник, канд. техн. наук, cherkasova_mv@mtspb.com

Арсентьев В. А., главный научный сотрудник, д-р техн. наук, ava@mtspb.com

Устинов И. Д., главный научный сотрудник, д-р хим. наук, ustinov_id@mtspb.com

Показано, что процесс тонкого измельчения протекает одновременно с процессом агрегирования частиц. При этом разрушение и агрегация находятся в динамическом равновесии. При многократных деформирующих воздействиях для разрушения металлических частиц требуется предотвращение релаксации микротрещин на поверхности этих частиц в интервалах между механическими воздействиями. Поэтому тонкое измельчение металлических частиц без использования веществ, препятствующих релаксации микротрещин, практически невозможно. Показано, что для интенсификации тонкого измельчения металлов следует использовать два реагента, имеющих различные механизмы воздействия на процесс, — интенсификатор образования дефектов на начальных стадиях воздействия на измельчаемые частицы и диспергаторы для дезагрегации продуктов разрушения этих частиц.

Исследование выполнено за счет гранта Российского научного фонда (проект №20-79-10125).

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