scholarly journals Effects of Waste Eggshells addition on Microstructures, Mechanical and Tribological Properties of Green Metal Matrix Composite

2019 ◽  
Vol 26 (1) ◽  
pp. 423-434
Author(s):  
Mohammed T. Hayajneh ◽  
Mohammed A. Almomani ◽  
Mu’ayyad M. Al-Shrida
Keyword(s):  
Compressive Strength ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Tribological Properties ◽  
Metal Matrix ◽  
Wear Test ◽  
Matrix Composites ◽  
Mechanical And Tribological Properties ◽  
Negative Results ◽  
Chicken Eggshell

AbstractChicken eggshell (Es) waste is an industrial byproduct, and its disposal constitutes a severe environmental risk. Eggshell is a new engineering reinforcement retaining excellent properties such as low density, renewable, eco-friendly, and high thermal stability. The current research aims to study the effects of eggshell particles addition on microstructures, mechanical and tribological properties of aluminium/eggshell green metal matrix composites (MMCs). In the present work Al–Es metal matrix composite is produced by powder metallurgy processes. SEM with EDX and XRD were used to examine the microstructures and the compounds that arise during the sintering process of the produced composites. Six tests were conducted on the produced samples including; dry wear test, micro Vickers hardness, and ultimate compressive strength. The results showed that the addition of 3 wt. % of eggshell improved wear resistance (65%), compressive strength (40%) and hardness (15%). At 6 and 9 wt. % of eggshell, negative results appeared.

scholarly journals Fabrication and Investigation of Mechanical Properties of SiC Particulate Reinforced AA5052 Metal Matrix Composite

2020 ◽  
Vol 7 (1) ◽  
pp. 26-36
Author(s):  
Murlidhar Patel ◽  
Sushanta Kumar Sahu ◽  
Mukesh Kumar Singh
Keyword(s):  
Compressive Strength ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Stir Casting ◽  
Processing Route ◽  
Matrix Composites ◽  
Sic Particulates ◽  
Particulate Reinforced ◽  
Aluminium Metal

In this present research particulate reinforced aluminium metal matrix composites are developed by using sand mould and liquid stir casting processing route in which AA5052 reinforced with 5 wt. % SiC particulates of 63µm particle size. The density, porosity, micro-hardness, and compressive strength of SiC particulate reinforced AA5052 MMC were investigated and compared these properties with similar properties of unreinforced AA5052. The microstructure of the developed composite was also analysed by using optical microscopy, SEM, and XRD. Developed particulate reinforced Al metal matrix composite gives improved hardness and compressive strength as compared to the unreinforced AA5052. The addition of 5 wt. % SiC particulates increases the density of AA5052.

Synthesis and mechanical behaviour of green metal matrix composites using waste eggshells as reinforcement material

2016 ◽  
Vol 5 (3) ◽  
Author(s):  
Shashi Prakash Dwivedi ◽  
Satpal Sharma ◽  
Raghvendra Kumar Mishra
Keyword(s):  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Testing Machine ◽  
Matrix Alloy ◽  
Stir Casting ◽  
Matrix Composites ◽  
Casting Technique ◽  
The Matrix ◽  
Chicken Eggshell

AbstractChicken eggshell (ES) is an aviculture by-product that has been listed worldwide as one of the worst environmental problems. The effective utilisation of ES biowaste is strongly encouraged in our society due to environmental and economic reasons. The aluminium alloy (AA) 2014/5 wt% carbonised ES metal matrix composite used in this study was fabricated by electromagnetic stir casting technique at parameters of 12 A (current), 180 s (time) and 700°C (matrix pouring temperature), respectively, and immediately extruded on universal testing machine at 60 MPa using cylindrical H13 tool steel die coated with graphite to avoid upper flow of ES particles and to improve wettability of carbonised ES with AA2014 alloy. Microstructures of composites show uniform distribution of carbonised ES particles. Density and overall cost of the metal matrix composite decreases 3.57% and 5%, respectively, when carbonised ES particulate is added 5% by weight. Tensile strength, hardness, toughness and fatigue strength of AA2014/5 wt% carbonized eggshell composite were also measured. Results show an improvement in these mechanical properties with addition of ES in the matrix alloy.

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