ПОЛУЧЕНИЕ И ИССЛЕДОВАНИЕ ТОНКИХ ПОКРЫТИЙ НА ОСНОВЕ ТИТАНА-ЗОЛОТА (TI-AU) ДЛЯ БИОМЕДИЦИНСКОГО ПРИМЕНЕНИЯ С УЛУЧШЕННЫМИ ФИЗИКО-МЕХАНИЧЕСКИМИ ХАРАКТЕРИСТИКАМИ

В данной научной статье исследованы структура и свойства поверхности тонких покрытий на основе Ti-Au, полученных методом PVD (магнетронного распыления) в вакуумной среде при высокой температуре 450 °C в режимах постоянного (DC) и высокочастотного (RF) тока. Тонкие покрытия, полученные на установке NanoPVD, имели среднюю толщину около 1 мкм. Экспериментальные исследования показали, что химический состав, микроструктура и свойства покрытий находятся в тесной зависимости от технологических параметров метода магнетронного распыления. Влияние добавок Ag и Cu на микроструктуру и механические свойства покрытий Ti-Au исследовалось с использованием растровой электронной микроскопии (SEM), энергодисперсионного микроанализа (EDX) и рентгеновской дифрактометрии (XRD). Характеристики шероховатости поверхности покрытий анализировались методом атомно-силовой микроскопии (AFM), а для комплексной оценки изменений свойств были проведены испытания на нанотвердость и трибологические тесты. Показано, что модификация поверхности подложки Ti6Al4V методом PVD повышает ее износостойкость и снижает коэффициент трения. По результатам рентгенофазового анализа установлено, что улучшение трибологических свойств полученных тонких покрытий напрямую связано с образованием основной фазы Ti3Au и увеличением ее содержания.

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