Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

Personal portfolio

METHODS TO IMPROVEMENT QUALITY OF WEAR RESISTANT ION-PLASMA TITANIUM NITRIDE COATINGS ON ALUMINIUM ALLOYS CASTINGS

Muratov V.S. 1 Khamin O.N. 1 Zakopets O.I. 1
1 Samara State Technical University
Quality of ion-plasma coatings applied on aluminum casting alloys Al-Si and Al-Si-Cu alloying systems is investigated. Characteristics of coatings as surface finish, thickness, pore volume, adhesion, face were evaluated. On the casting containing silicium coating is formed with non-uniform color. This is due to eutectic area on alloys surface (α-phase + Si). To solve this problem influence features form filling melt, cooling rate during and after crystallization, conditions heat treatment on structure and properties casting aluminum alloys were investigated. Based on research variants and characteristics alloys heat treatment providing the best quality coatings are established. Increased cooling rates and decreased age time result to a structure refinement and ensure high mechanical properties. Quality of ion-plasma coatings improves by refinement siliferous eutectic and hardness increase, which improve efficiency of surface preparation operation for coatings.