scholarly journals Studies on corrosion behaviour of sintered aluminium based composites in chloride environment

2021 ◽  
Vol 8 ◽  
pp. 22
Author(s):  
Samuel Olukayode Akinwamide ◽  
Miltia Lesufi ◽  
Ojo Jeremiah Akinribide ◽  
Bukola Joseph Babalola ◽  
Peter Apata Olubambi
Keyword(s):  
Corrosion Behaviour ◽  
Aluminium Matrix ◽  
Pure Aluminium ◽  
Matrix Composites ◽  
Sintered Compact ◽  
Corrosion Susceptibility ◽  
Ball Milling Technique ◽  
Silicon Carbide Particles ◽  
Chloride Environment ◽  
Carbide Particles

Aluminium matrix composites have been developed to replace other conventional engineering materials in specific industries where enhanced properties are required. The corrosion susceptibility of sintered unreinforced aluminium and composites in chloride medium (AMCs) were studied. The powders of pure as-received aluminium (matrix) and particles of ferrotitanium and silicon carbide particles were homogeneously dispersed using ball milling technique. Powder metallurgy route was utilised for consolidating the milled powders into a sintered compact. Microstructural examination of the compacted pure aluminium and composites confirmed an even distribution of the reinforcements in the aluminium matrix. The produced composites also recorded an improved corrosion resistance in a corrosive medium of 3.5 wt.% laboratory prepared sodium chloride, from the potentiodynamic polarization and chronoamperometry (potentiostatic) tests. The corroded specimens were further assessed for pitting using a field emission scanning electron microscope (FE-SEM). The resistance of the fabricated samples to corrosion was improved upon the addition of TiFe and SiC reinforcements.

Corrosion behaviour of aluminium matrix composites

1995 ◽  
Vol 30 (4) ◽  
pp. 898-903 ◽  
Author(s):  
G. W. Roper ◽  
P. A. Attwood
Keyword(s):  
Corrosion Behaviour ◽  
Aluminium Matrix ◽  
Matrix Composites ◽  
Aluminium Matrix Composites

Electroless nickel–phosphorus plating on silicon carbide particles for metal matrix composites

2014 ◽  
Vol 40 (10) ◽  
pp. 16653-16664 ◽  
Author(s):  
Peng He ◽  
Shangyu Huang ◽  
Huachang Wang ◽  
Zhichao Huang ◽  
Jianhua Hu ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Electroless Nickel ◽  
Matrix Composites ◽  
Silicon Carbide Particles ◽  
Carbide Particles

scholarly journals Microstructural Characterization of Cast Magnesium Matrix Composites by Raman Microscopy

2013 ◽  
Vol 13 (1) ◽  
pp. 95-98 ◽  
Author(s):  
M.A. Malika ◽  
K. Majchrzak ◽  
K.N. Braszczyńska-Malik
Keyword(s):  
Silicon Carbide ◽  
Microstructural Characterization ◽  
Raman Microscopy ◽  
Matrix Composites ◽  
Magnesium Matrix ◽  
Magnesium Matrix Composites ◽  
Silicon Carbide Particles ◽  
Cast Magnesium ◽  
Carbide Particles

Abstract Cast magnesium matrix composites reinforced with silicon carbide particles were investigated by using Raman microscopy. 3C, 4H and 6H polytypes of SiC particles were identified in the investigated composites. Additionally, Mg2Si compound was detected by Raman microscopy in the composites microstructure.

scholarly journals Corrosion Resistance of Al/SiC Laser Cladding Coatings on AA6082

Coatings ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 673
Author(s):  
Ainhoa Riquelme ◽  
Pilar Rodrigo ◽  
María Dolores Escalera-Rodríguez ◽  
Joaquín Rams
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Behavior ◽  
Laser Cladding ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
The Matrix ◽  
Corrosion Mechanisms ◽  
Silicon Carbide Particles ◽  
Carbide Particles

Aluminum matrix composites reinforced with silicon carbide particles (SiCp) were deposited by laser cladding on AA6082 aluminum alloy. Different compositions of the matrix of the composites coating were used and different amounts of Si and Ti were added to a base of Al-12Si in order to control the reactivity between molten aluminum and SiCp during laser cladding. The corrosion behavior of the coatings deposited was evaluated in 3.5 wt.% NaCl solution using gravimetric analyses and electrochemical polarization tests. The corrosion products observed were Al(OH)3 and Al2O3, and they formed a layer that limited the evolution of corrosion. However, the presence of discontinuities in it reduced the corrosion resistance of the coating. The corrosion mechanisms were different depending on the coating composition. The addiction of Ti to the alloy allowed for better corrosion behavior for the composite coating than that of the aluminum substrate.

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