scholarly journals Wear and corrosion behaviour on pure aluminium matrix reinforced with SiC and spent catalyst by using the stir casting method

2020 ◽  
Author(s):  
Pragathi P. ◽  
Elansezhian R.
Keyword(s):  
Corrosion Behaviour ◽  
Stir Casting ◽  
Aluminium Matrix ◽  
Pure Aluminium ◽  
Casting Method ◽  
Spent Catalyst ◽  
Wear And Corrosion

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.

Microstructure, Mechanical and Corrosion Behaviour of Cu-SiC Composites Fabricated by Stir Casting Method

2021 ◽  
pp. 93-102
Author(s):  
Anil Kothari ◽  
Hemant Jain ◽  
Vikas Shrivastava ◽  
Richa Thakur ◽  
Pankaj Agarwal ◽  
...  
Keyword(s):  
Corrosion Behaviour ◽  
Stir Casting ◽  
Casting Method ◽  
Sic Composites

Material Characterization Study on Aluminium Metal Matrix Composites by Enhanced Stir Casting Method

2014 ◽  
Vol 984-985 ◽  
pp. 326-330
Author(s):  
T.M. Chenthil Jegan ◽  
D. Ravindran ◽  
M. Dev Anand
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
Tensile Strength ◽  
Boron Carbide ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Stir Casting ◽  
Aluminium Matrix ◽  
Matrix Composites ◽  
Casting Method

Metal Matrix Composites possesses high mechanical properties compared to unreinforced materials. Aluminium Matrix Composites (AMC) is attracted in the emerging world because of its low cost, less weight and enhanced mechanical properties. In the present study the enhancement in mechanical properties like hardness and tensile strength of AMCs by reinforcing AA 6061 matrix with silicon carbide (SiC) and boron carbide (B4C) particles are analyzed. By enhanced stir casting method aluminium matrix was reinforced with boron carbide particulates and silicon carbide particulates with the various weight percentage of 2.5 %,5% and 7.5%.The tensile strength and hardness was found to increase with the increase in wt% of the reinforcement. From the analysis it is observed that the mechanical property of B4C reinforced AMC is significantly good compared to SiC reinforced AMC.

Development of Hybrid Composite Material of Palm Kernel Shell (PKS) and Periwinkle Shell (PS) Particles in Pure Aluminium Matrix

2018 ◽  
Vol 278 ◽  
pp. 54-62
Author(s):  
R.S. Ebhojiaye ◽  
Patrick E. Amiolemhen ◽  
Akii O. A. Ibhadode
Keyword(s):  
Composite Material ◽  
Automobile Industry ◽  
Hybrid Composite ◽  
Palm Kernel ◽  
Stir Casting ◽  
Aluminium Matrix ◽  
Pure Aluminium ◽  
Palm Kernel Shell ◽  
Hybrid Composite Material ◽  
Periwinkle Shell

Lightweight engineering materials that are strong, durable, wear and corrosion resistant are required nowadays in the field of engineering, especially in the automobile industry. This study was to develop a hybrid composite material of palm kernel shell (PKS) and periwinkle shell (PS) particles as reinforcements in pure aluminium matrix. The central composite design (CCD) of the response surface methodology (RSM) was used to carry out the design of experiment (DoE). Stir casting method was used to fabricate the specimens. The DoE gave 20 runs (experimental samples) which were replicated three times each, bringing the total number of runs to 60 for each of the six responses considered, and 360 specimens were fabricated in all. Three experimental values were obtained for each of the 120 runs for the wear rate, creep rate, density, tensile strength, hardness and melting temperature. The average values were determined and recorded. Control specimens with 100 wt. % pure aluminium matrix, 0 wt. % of PKS and PS reinforcement particles were prepared. The results showed that the reinforcement particles had significant improvement on mechanical properties of the pure aluminium.

Wear and Corrosion Behaviour of In-Situ Al-TiB2 Metal Matrix Composites

2005 ◽  
Vol 475-479 ◽  
pp. 449-452 ◽  
Author(s):  
D.S. Sekhawat ◽  
M. Chakraborty ◽  
U.K. Chatterjee
Keyword(s):  
Metal Matrix Composites ◽  
Master Alloy ◽  
Metal Matrix ◽  
Corrosion Behaviour ◽  
Pure Aluminium ◽  
Matrix Composites ◽  
Mixed Salt ◽  
Wear And Corrosion ◽  
The Matrix

In-situ Al-TiB2 metal matrix composites containing 5 wt% and 10 wt% TiB2 have been synthesized through master alloy and mixed salt routes. The composites have shown five times increase in wear resistance compared to commercially pure aluminium. Corrosion evaluation by polarization technique carried out in NaCl, H2SO4 and NaOH solutions indicates a lower corrosion resistance of the composites than the corresponding base metals. The composites produced through mixed salt route suffered higher corrosion than those prepared by master alloy route. The results have been explained from the physical and electrochemical effects of TiB2 in the matrix.

scholarly journals Corrosion and Hardness Behaviour of Al/GO Nanocomposites Processed by the Ultrasonic Gravitational Stir Casting Method

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
S. Narayanan ◽  
G. G. Sozhamannan ◽  
K. Hemalatha ◽  
K. Velmurugan ◽  
V. S. K. Venkatachalapathy
Keyword(s):  
Metal Matrix ◽  
Immersion Time ◽  
Corrosion Behaviour ◽  
Casting Process ◽  
Stir Casting ◽  
Matrix Composites ◽  
Casting Method ◽  
Weight Losses ◽  
Immersion Corrosion ◽  
Time Periods

The objective of this work is to evaluate the corrosion behaviour of nanographene oxide reinforced aluminium (Al/GO) metal matrix composites with different immersion time periods using the immersion corrosion technique. The Al/GO composites were fabricated by the ultrasonic gravitational stir casting process. The corrosions of Al/GO were evaluated using a scanning electron microscope. The experimental results revealed that the corrosion rate decreased and weight losses increased with increasing immersion time periods. The nonimmersed Al/GO composites exhibited higher microhardness values compared to the immersed Al/GO composites.

Effect of Pouring Temperature on Mechanical Properties and Microstructures of Aluminium Matrix Composite Strengthened by CNT with Stir Casting Method

2020 ◽  
Vol 988 ◽  
pp. 30-35
Author(s):  
Muhammad Syahid ◽  
Lukmanul H. Arma ◽  
Hairul Arsyad ◽  
Zulfikar A.R. Suwardi
Keyword(s):  
Mechanical Properties ◽  
Mechanical Strength ◽  
Matrix Composite ◽  
Hardness Test ◽  
Stir Casting ◽  
Mechanical Tests ◽  
Aluminium Matrix ◽  
Casting Method ◽  
Pouring Temperature ◽  
Aluminium Matrix Composite

Aluminium matrix composite reinforced Carbon nanoTubes are widely developed because it can increase mechanical strength without reducing its ductility. One of the AMC / CNT manufacturing processes is through the stir casting method. The challenge of the Al / CNT manufacturing process is the occurrence of agglomeration and CNT not homogeneous so that the right casting parameters are needed to obtain optimal results. The purpose of this study was to analyse the effect of pouring temperature on the mechanical strength and microstructure of AA6061 by adding Carbon Nanotube (CNT) through the stir casting method. The CNT is added by 0.1% wt and pouring temperature at 700 °C, 730 °C and 760 °C. Mechanical tests carried out were tensile test, hardness test, and impact test. The highest value of hardness and tensile strength was obtained at the pouring temperature of 700 °C are78 HV and 80.97 MPa. Lower pouring temperature causes smaller grain size so that it has higher strength. The distribution of hardness values ​​at the top, middle and bottom of the specimen is not evenly distributed, but does not differ greatly for all pouring temperatures. The highest value of impact strength is obtained at the pouring temperature of 760 °C which is 0.128 J/mm2. Microstructure was shown the addition of CNTs caused the size of primary silicon and aluminium grains to be small which would increase the mechanical properties.

Optimization of Process Parameters in Stir Casting of Hybrid Metal Matrix (LM25/SiC/B4C) Composite Using Taguchi Method

2017 ◽  
Vol 13 (9) ◽  
pp. 6475-6479
Author(s):  
M. Arulraj ◽  
P.K. Palani ◽  
L. Venkatesh
Keyword(s):  
Taguchi Method ◽  
Matrix Material ◽  
Base Material ◽  
Stir Casting ◽  
Aluminium Matrix ◽  
Matrix Composites ◽  
Design Concepts ◽  
Specific Strength ◽  
Optimization Of Process Parameters ◽  
Reinforcement Material

Aluminium based composites exhibit many attractive material properties such as increased stiffness, wear resistance, specific strength and vibration damping and decreased co-efficient of thermal expansion compared with the conventional aluminium alloys. Aluminium Matrix Composites consist of non-metallic reinforcement which offers advantageous properties over base material. Reinforcements like SiC, B4C and Al2O3 are normally preferred to improve the mechanical properties. Here Aluminum LM25 is selected as matrix material while Silicon carbide and Boron carbide are selected as reinforcement material. The fabrication of aluminium matrix was done by stir casting method. In the present study an attempt has been made to investigate the effect of three major stir casting parameters (stir speed, stir duration and preheated temperature of reinforcement material) on stir casting of Aluminium LM25 - SiC - B4C composite. Experiments were conducted based on Taguchi methodology. Taguchi quality design concepts of L9 orthogonal array has been used to determine S/N ratio and through S/N ratio a set of optimum stir casting parameters were obtained. The experimental results confirmed the validity of Taguchi method for enhancing tensile strength of castings. 

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