Microstructure and tribological properties of Fe-based amorphous coating prepared by detonation spray

Fe‐Based Amorphous Alloy Coatings: A Review

“…In fact, pores are the main origin of microcracks to be formed and pore area leads to high-stress concentration, as well as coating deformation and rupture during dry sliding wear. [64] The effect of porosity on the wear resistance of HVOF sprayed Fe 49.7 Cr 18 Mn 1.9 Mo 7.4 W 1.6 B 15.2 C 3.8 Si 2.4 [67] and HVAF-sprayed Fe 52 Cr 26 Mo 2,17C.5 B 2.1 Si 0.4 /Mo amorphous coating [68] is also reported. The relatively low porosity indicates the excellent wear resistance of the amorphous coatings.…”

“…They employed a heat treatment process for the optimization of microstructure and found out that the optimal selection of the heat treatment process (i.e., at 650 °C) lowers porosity and cracks and increases adhesion of the coating and subsequently significantly enhances wear resistance of the coating. [67] Cui et al [64] observed a significant dependence between the wear resistance and porosity of the coating. In their work, Fe-Cr-Mo-C-B amorphous coatings were prepared by detonation spray under different oxygen-to-fuel ratios.…”

“…In fact, pores are the main origin of microcracks to be formed and pore area leads to high‐stress concentration, as well as coating deformation and rupture during dry sliding wear. [ 64 ] The effect of porosity on the wear resistance of HVOF sprayed [ 67 ] and HVAF‐sprayed Fe 52 Cr 26 Mo 2,17C.5 B 2.1 Si 0.4 /Mo amorphous coating [ 68 ] is also reported. The relatively low porosity indicates the excellent wear resistance of the amorphous coatings.…”

“…Wear test results of deposited coatings: a) COF and b) wear rate. Reproduced with permission [ 64 ] Copyright 2024, Elsevier.…”

Математическое Прогнозирование Вероятности Столкновения Частиц В Процессе Детонационного Напыления

“…Введение. Исследование процессов детонационного напыления композиционных материалов рассмотрено в различных научных работах, описывающих его применение [1] и параметры, к которым относятся: расстояние от среза ствола до подложки [2]; выбор и соотношение компонентов газовой смеси [3][4][5][6][7][8][9]; толщина покрытия [10], скорость и температура потока частиц [11]; угол наклона подложки [12]; соотношение компонентов напыляемого состава [13]; взаимодействие напыляемого состава с компонентами газовой смеси [14]; коэффициент заполнения ствола газовой смесью [15]; режим напыления [16], который оказывает существенное влияние на конечный состав наносимого материала [17]. Также описывается множество преимуществ данной технологии получения покрытий, а именно: хорошая адгезия [2], высокая износостойкость и твердость [13,[18][19][20], коррозионная устойчивость покрытий [22].…”