Improving wear resistance of epoxy/SiC composite using a modified apparatus

2021 ◽  
pp. 096739112110027
Author(s):  
Amal Nassar ◽  
Mostafa Salem ◽  
Ismail El-Batanony ◽  
Eman Nassar
Keyword(s):  
Silicon Carbide ◽  
Wear Resistance ◽  
Ultrafine Particles ◽  
Ceramic Particle ◽  
Ceramic Particles ◽  
Mixing Method ◽  
Increase Wear Resistance ◽  
Silicon Carbide Particles ◽  
The Relationship ◽  
Carbide Particles

A centrifugal mixing method was developed to disperse ceramic particles inside a thermosetting polymer. Horizontal centrifugal equipment was used to fabricate cylindrical rods from epoxy reinforced with silicon carbide particles. Silicon carbide particles (SiC) are used for the outer coating of epoxy to increase wear resistance. In the centrifugal mixing process, there are three important variables: rotational speed, ceramic percentage and, ceramic size which affect ceramic particle distribution. This paper aims to find the relationship between these variables and the distribution of ceramic particles then determine the optimum conditions to get maximum wear resistance and hardness. From the experiment and analysis, it can be concluded that when mixing speed was greater than 600 rpm, the possibility of air bubbles formation was increased especially for ultrafine particles. Otherwise, the maximum wear resistance and hardness values were found in ultrafine size SiC samples reinforced with 30 wt% which were mixed at a low speed of 300 rpm.

scholarly journals STUDY OF MECHANICAL PROPERTIES AND WEAR BEHAVIOR OF ALUMINUM MATRIX COMPOSITES REINFORCED WITH SILICON CARBIDE PARTICLES

2019 ◽  
Vol 19 (3) ◽  
pp. 10
Author(s):  
Zehra Jilham
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
Tensile Strength ◽  
Wear Resistance ◽  
Compression Strength ◽  
Wear Behavior ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composites ◽  
Silicon Carbide Particles ◽  
Carbide Particles

ABSTRACTThe aim of this research is to study the mechanical properties and wear behavior of aluminum composite material (AMCs) reinforced with silicon carbide particles with varying percentages (0, 3, 6 and 9) wt. %. These composites samples were prepared by stir casting process. Tensile strength, compression strength, hardness and wear resistance of the prepared composites were analyzed. The result showed that adding SiC reinforced in Al matrix increased tensile strength, compression strength, wear resistance and hardness with increased wt. percentage of silicon carbide reinforced AMCs. Maximum tensile and compression strength and hardness showed at 9 wt. percentage SiC reinforced AMCs.

The Effect of SiC Surface Treatment on the Interface Bonding Behavior of SiC/Cu Composite Particles

2012 ◽  
Vol 512-515 ◽  
pp. 951-954
Author(s):  
Bing Bing Fan ◽  
Huan Huan Guo ◽  
Jian Li ◽  
Hai Long Wang ◽  
Ke Bao ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Surface Treatment ◽  
Practical Importance ◽  
Functional Materials ◽  
Decomposition Reaction ◽  
Reduction Reaction ◽  
Temperature Oxidation ◽  
Reaction Method ◽  
Silicon Carbide Particles ◽  
Carbide Particles

The SiC/Cu composite is one of the "structural-functional" materials. It shows good mechanical properties and very high thermal, high electrical conductivity etc. But the co-dispersion, wetting and bonding between SiC and Cu interface are of practical importance in the preparation of SiC/Cu composites. In this work, surface treatment techniques such as high-temperature oxidation, acid dipping and alkaline wash were adopted separately on silicon carbide particles, in order to improve the wettability and physical and chemical compatibility between silicon carbide and copper, then we used the replacement reaction method and decomposition-reduction reaction method to generate Cu coating on the surface of silicon carbide. The results shown that, the surface of silicon carbide particle which treated by alkaline wash was cleaner and more rough than that only treated by high-temperture oxidation, moreover, the specific surface of the particle was increased, which resulted in a compact layer of Cu coating. for the same silicon carbide particles, the effect of the Cu coating prepared by decomposition reaction method was better than that by reduction reaction method.

High Pressure Sintering of Silicon Carbide with Mg-Cr3C2 Composite Additive

2021 ◽  
Vol 1035 ◽  
pp. 768-772
Author(s):  
Jing Kun Li ◽  
Xue Ping Ren ◽  
Qiang Yan ◽  
Yan Ling Zhang ◽  
Hong Liang Hou
Keyword(s):  
Silicon Carbide ◽  
High Pressure ◽  
Magnesium Alloy ◽  
Chromium Carbide ◽  
Sintered Ceramic ◽  
High Pressure Sintering ◽  
C 30 ◽  
Silicon Carbide Particles ◽  
New Phase ◽  
Carbide Particles

Porous silicon carbide was sintered at 1300 °C/30 MPa for 2 h with 4 wt.% magnesium alloy and 4 wt.% chromium carbide composite additives. The sintered ceramic presented density of around 92% of the theoretical density. No new phase was observed after sintering. Mg segregates around chromium carbide particles in sintered ceramic. The silicon carbide particles were mainly bonded by melt magnesium alloy and chromium carbide diffused in solid state. The voids existed in the sintered ceramic, but much more fracture occurred in silicon carbide particles during bending due to high bonding strength of sintering necks. Some voids existed in the ceramic, which act as crack sources during fracture.

Effect of hybrid reinforcement at stirred zone of dissimilar aluminium alloys during friction stir welding

2019 ◽  
Vol 116 (6) ◽  
pp. 631 ◽  
Author(s):  
R. Ashok kumar ◽  
G.R. Raghav ◽  
K.J. Nagarajan ◽  
Sathish Rengarajan ◽  
P. Suganthi ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Friction Stir Welding ◽  
Aluminium Alloys ◽  
Groove Depth ◽  
Weld Nugget ◽  
Wear Properties ◽  
Friction Stir ◽  
Alumina Particles ◽  
Silicon Carbide Particles ◽  
Carbide Particles

The main objective of this work is to modify the mechanical as well as surface properties of weld nugget by the reinforcement of hybrid ceramic particles (alumina and silicon carbide). This is accomplished by combining friction stir welding (FSW) and friction stir processing (FSP) on dissimilar AA6101-T6 and AA1350 aluminium alloys. For this purpose, various levels of mixing proportions of Al2O3 & SiC particles are used with constant groove depth and width i.e. constant groove dimension. To evaluate the quality of joints, tensile, bending, micro-hardness, wear and microstructural studies are carried out. Among these, reinforcement of 100% alumina particles exhibits better mechanical and wear properties. On the other hand, reinforcement of 100% silicon carbide particles produces poor mechanical and wear properties. And also increment in percentage of reinforcement of alumina particles improves the mechanical and wear properties of weld nugget, when compared to increment in percentage of reinforcement of silicon carbide particles.

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