Nanocomposites and nanomaterials

Thermal efficiency of nanoscale aluminum layer modified by ionic implantation
Honcharov V.V.1, Zazhigalov V.A.1, Honcharova A.V.2
1 Departmen of Heterogeneous Catalytic Oxidation Processes, Institute for Sorption and Problems of Endoecology NAS of Ukraine, General Naumov Str., 13, Kyiv-03164, Ukraine.
2 Junior Academy of Sciences of Ukraine, Mendeleev Str., 1, Rubizhne 93000, Ukraine.

Much attention is paid to the issue of modifying materials using high-energy technologies. In particular, studies of improving the thermal properties of materials through the use of ion implantation are promising [1, 2]. Among its advantages this technology has low consumption of active element and the formation of nanosized modified layers.
Therefore, the aim of this work was to study the thermophysical characteristics of aluminum modified with titanium ions, for further use as a material of the heat exchange device.
Ionic implantation is chosen as the modification technology.
Samples of aluminum foil were taken for research. Some of them were treated with titanium and nitrogen ions (simultaneously).
Temperatures were measured using an infrared thermometer "HoldPeak HP-1300" with a measuring range up to +1300 ° C. The surface microstructure of the samples was studied using optical microscopy and computer simulation.
According to the results of the surface microstructure study, it was found that ion implantation changes the microgeometry and creates a nanoscale (about 30 nm) modified layer.
Studies have shown that the treated samples have higher thermal conductivity than the original. 
The absorption capacity of infrared heat was 4% higher for implants as well.

1.	Kiwook Kim, Ji Hwan Jeong. Condensation mode transition and condensation heat transfer performance variations of nitrogen ion-implanted aluminum surfaces // Int. J. Heat Mass Tran.-2018.-125.-P. 983-993.
2.	Zazhigalov, V.A., Honcharov, V.V., Bacherikova, I.V. et al. Formation of Nanodimensional Layer of Catalytically Active Metals on Stainless Steel Surface by Ionic Implantation // Theor Exp Chem.-2018.-54, P. 128–137.