Mat Tahir, Noor Ayuma and Shahira Liza, Shahira Liza and Kanao, Fukuda and Mohamad, Syazwani and Hashimi, Mohd. Zakir Fathi and Mohd. Yunus, Mohd. Saifulnizam and Yaakob, Yazid and Othman, Intan Sharhida (2022) Surface and tribological properties of oxide films on aluminium alloy through fly-ash reinforcement. Coatings, 12 (2). pp. 1-19. ISSN 2079-6412
![]() |
PDF
1MB |
Official URL: http://dx.doi.org/10.3390/coatings12020256
Abstract
Hard anodizing has proven to be a helpful surface treatment for aluminium alloy and typically accompanied by the growth of a porous and highly flawed oxide layer. The presence of pores on the oxide surface can be taken as an advantage in improving the surface properties. Fly-ash particles are high in SiO2 and Al2 O3 content and can be utilized as inexpensive strengthening particles, which can increase the wear resistance and microhardness of composite material. It was noticed that limited research had been carried out in utilizing fly-ash as reinforcement on composite oxide coating as a wear resistance candidate. Thus, this study focused on reinforcing fly-ash on oxide coating and investigating its tribological performance. The composite oxide coating was grown on AA2017 aluminium alloy through anodizing process. To understand the effect of anodizing time and fly-ash content, the parameters were varied from 5–60 min and 0–50 g/L, respectively. The findings suggested that 60 min of anodizing time provides the highest thickness and surface roughness at 35 µm and 6.5 µm, respectively. Interestingly, composite oxide coating with 50 g/L fly-ash provides the highest coating thickness but has the lowest roughness at 52 µm and 8.2 µm, respectively. The composite oxide coatings are observed to reduce friction only for a limited time, despite their potential in significantly reducing the wear rate. The wear mechanism observed was adhesion, micro-crack, and delamination. The findings of this study are believed to provide insight on the potential of fly-ash to be a reinforcement for wear-reduction materials.
Item Type: | Article |
---|---|
Uncontrolled Keywords: | Composite film, Fly-ash, Hard anodizing, Oxide film, Wear mechanism |
Subjects: | T Technology > T Technology (General) |
Divisions: | Malaysia-Japan International Institute of Technology |
ID Code: | 103285 |
Deposited By: | Widya Wahid |
Deposited On: | 31 Oct 2023 01:36 |
Last Modified: | 31 Oct 2023 01:36 |
Repository Staff Only: item control page