Effect of Heat Treatment on Tensile and Corrosion Properties of LM6 Hybrid Metal Matrix Composite Reinforced with Cenosphere and Red Mud

Kumar, Vijee; Suresh, Radhika; Rao, C.R. Prakash; Kumar, D. V. Ravi; Bharat, V.

doi:10.4236/jmmce.2019.71001

Cited by 3 publications

References 23 publications

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Corrosion Behaviour of Aluminium 6061 Nickel Coated Cenosphere Composite

Arvind¹,

M²,

Prashanth³

et al. 2020

Journal of Manufacturing Engineering

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Cenosphere fly ash is one of the most inexpensive and low-density material which is abundantly available as a solid waste by-product of coal combustion in thermal power plants. Aluminium metal matrix composites with Nickel coated cenospheres as the reinforcement is prepared by stir casting route. The composites are prepared with varying percentages of cenospheres in the percentage of 2-10% by weight of the composite. Immersion corrosion tests are conducted on the composites in three different medium and for three different time durations. It is evident from the test results as well as the microstructure images that the weight loss of samples with 8% Nickel coated cenospheres has shown least corrosion or the highest corrosion resistance when compared to the counterparts.

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Corrosion Behaviour of Aluminium 6061 Nickel Coated Cenosphere Composite

Arvind¹,

M²,

Prashanth³

et al. 2020

Journal of Manufacturing Engineering

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Corrosion Behavior of Bare & Organic Coated ADC-12 Used for Heat Sink Enclosure of on-Board Charger

Bhatt,

Bali,

Rao

2024

SAE Technical Paper Series

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<div class="section abstract"><div class="htmlview paragraph">The automotive sector trend is moving towards vehicle electrification that provides great energy and environmental implications. However, Electrical Vehicles (EVs) are facing challenges in term of charging, driving range and life cycle with respect to existing vehicles. One of the key components in EV which is responsible for charging is On-Board Charger (OBC). OBCs are mainly used in converting DC power from battery pack to AC power and contains different power-electronic devices such as MOSFETs, diodes, magnetics etc. Heat-sinks are used to transfer the heat generated by these electronics and also as an enclosure to accommodate the electronics. Aluminum based alloy-ADC-12 generally used for manufacturing of OBC-enclosure due to its light weight, easy castability and good thermal conductivity. Although ADC-12 aluminum alloy has high corrosion resistance, specific environment condition or situation may accelerate corrosion with extended storage in rainy and salty environments. Normally, mounting position of OBC in vehicle is generally below powertrain system either parallel or tilted to ground surface. Due to this during rainy season there are chances of prolonged water accumulation at fins of ADC-12 enclosure which results into corrosion of ADC-12. Thus, to protect OBC-enclosure from corrosion, organic (Acrylic resin with Al<sub>2</sub>O<sub>3</sub> / TiO<sub>2</sub> pigments) coating through Cathodic Electro Deposition (CED) process has been developed and comparative evaluation of corrosion resistance of coated and bare ADC-12 has been studied in this work. Corrosion rate was measured by performing immersion test in 3.5 wt. % NaCl solution for 500 hours. Visual inspection, SEM-EDS analysis and weight loss measurement was used to compare the performance of coated and bare samples after immersion test. Uniform corrosion was observed in case of bare-ADC-12 while negligible corrosion was observed in case of coated samples after immersion test of 500 hours. SEM-EDS analysis indicates the localized corrosion initiated from the intermetallic (rich in Si and Mn, Fe, Cu) and formed their oxides. At exposed region initially Al forms protective alumina (Al<sub>2</sub>O<sub>3</sub>) layer but after certain time cracking of layer occurs and further corrosion takes place. Corrosion rate by weight loss technique measurement show that bare ADC-12 enclosure corroded approximate three times faster than coated-samples.</div></div>

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Use of Corrosion Inhibitors in Stainless Steel Anchors Used In Glass Fiber Reinforced Concrete (GRC) Precast Facade Elements

Coşkun¹,

Gerengi²,

Maraşlı³

et al. 2023

EJRnD

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Corrosion is the process of losing the physico-mechanical properties of the metallic material over time as a result of chemical or electrochemical reactions. It is one of the most fundamental problems encountered in the construction industry; according to the latest research despite all the precautions taken corrosion causes an economic loss of approximately 546 million pounds per year. In addition to financial consequences, numerous dramatic damage events are directly or indirectly attributed to the corrosion process. Revealing the corrosion risk at the architectural design stage, taking into account the compatibility of the materials to be used, will contribute significantly to the steps to be taken regarding the monitoring and prevention of corrosion. In this study; the benefit of preventing the corrosion that occurs over time in the stainless steel anchors used in glass fiber reinforced concrete (GRC) precast facade elements by using corrosion inhibitor before mounted to the GRC was investigated. Creating a protective layer on the metal surface by using a patented chemical solution containing a corrosion inhibitor was used for the first time in the GRC sector in this study. After washing with corrosion inhibitor solution, stainless steel anchor elements were immersed in 5%(w/v) NaCl solution. After 30 days, the metal surfaces were examined by visually and were investigated by surface imaging methods (Scanning Electron Microscopy (SEM), Energy Dispersive X-Ray Spectroscopy (EDS)) and Atomic Force Microscopy (AFM). The findings show that washing with a solution containing corrosion inhibitor, especially after welding; increases the strength of the oxide film formed on the stainless steel surface and protects it against corrosion.

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Effect of Heat Treatment on Tensile and Corrosion Properties of LM6 Hybrid Metal Matrix Composite Reinforced with Cenosphere and Red Mud

Cited by 3 publications

References 23 publications

Corrosion Behaviour of Aluminium 6061 Nickel Coated Cenosphere Composite

Corrosion Behaviour of Aluminium 6061 Nickel Coated Cenosphere Composite

Corrosion Behavior of Bare & Organic Coated ADC-12 Used for Heat Sink Enclosure of on-Board Charger

Use of Corrosion Inhibitors in Stainless Steel Anchors Used In Glass Fiber Reinforced Concrete (GRC) Precast Facade Elements

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