The Physical and Mechanical Properties of a Shape Memory Alloy Reinforced with Carbon Nanotubes (CNTs)
DOI:
https://doi.org/10.25130/tjps.v23i9.816Keywords:
Shape Memory Alloys, Powder Metallurgy, Carbon Nanotubes, Cu-Al-Ni alloys, Physical and Mechanical Properties.Abstract
The shape Memory Alloy (SMA) (Copper-Aluminum-Nickel) was
prepared in the research by Powder metallurgy (PM) in component
percentage (Cu-13% Al-4% Ni), pressure of (500 Mpa) in one direction,
and sintering in (800°C) with Nitrogen gas for three hours. (CNTs) was
added in percentage (0,0.5,1.0,1.5,2.0,2.5) % as a volumetric ratio at the
relatively of the copper ratio to obtain advanced composites for Carbon
Nanotubes with a distinct effect on properties.
The elements of the alloy were analyzed using the (EDS) system attached
to the Scanning Electron Microscopy (SEM) and study the X-ray
Diffraction (XRD) to definition the elements and compounds formed
after the process of sintering while imaging the microscopic structure by
both Optical Microscopes and (SEM).
The physical characteristics were studied as the results showed that by
increasing the content of the Carbon Nanotubes (CNTs), The Bulk
Density values of the (Cu-13% Al-4% Ni) decrease by ratio (23.5%) for
content of Carbon Nanotubes (0%) to (2.0%) associated with an increase
in True Porosity with the increase of the (CNTs) content at the same ratio
(27.85%) and the impact is reversed when the content is increased to
(2.5%) as it corresponds to the Water Absorption. The decrease in
thermal conductivity corresponds to the increase in the True porosity
ratio while slightly improving the amount Thermal Conductivity at an
add (2.5%) percentage (2.0%) of the (CNTs). Some Mechanical
properties, such as Hardness and Compressive Strength, have been
reduced by increasing the content of the (CNTs) to (2%) While there has
been a slight improvement in these two characteristics at the
corresponding ratio.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2023 Tikrit Journal of Pure Science
This work is licensed under a Creative Commons Attribution 4.0 International License.
Tikrit Journal of Pure Science is licensed under the Creative Commons Attribution 4.0 International License, which allows users to copy, create extracts, abstracts, and new works from the article, alter and revise the article, and make commercial use of the article (including reuse and/or resale of the article by commercial entities), provided the user gives appropriate credit (with a link to the formal publication through the relevant DOI), provides a link to the license, indicates if changes were made, and the licensor is not represented as endorsing the use made of the work. The authors hold the copyright for their published work on the Tikrit J. Pure Sci. website, while Tikrit J. Pure Sci. is responsible for appreciate citation of their work, which is released under CC-BY-4.0, enabling the unrestricted use, distribution, and reproduction of an article in any medium, provided that the original work is properly cited.
