Power Research

Open Access Open Access  Restricted Access Subscription Access
Open Access Open Access Open Access  Restricted Access Restricted Access Subscription Access

Corrosion Behaviour of Aluminium Alloy-Flyash Composites used in ESP


Affiliations
1 Dept. of Mechanical Engineering, BMS Institute of Technology, Bangalore -560 064, India
2 Principal, BMS Institute of Technology, Bangalore -560 064, India
3 Materials Technology Division, Central Power Research Institute, Bangalore- 560 080, India
4 Dept. of Chemistry, BMS Institute of Technology, Bangalore -560 064, India
     

   Subscribe/Renew Journal


The effect of corrosion on aluminium alloy (LM6) containing ceramic fl y ash based microspheres is investigated in this work. Stir casting route has been employed to disperse 10 % ceramic microspheres as reinforcement in the alloy matrix. Further, the alloy system was subjected to grain refinement, modification as well as combined action of grain refinement and modification. Three sets of LM6 alloy castings were produced in each case, to check for reproducibility. The corrosion resistance was evaluated by immersing the samples in 3% NaCl solution. The pH and electrical conductivity were measured to assess the damage due to corrosion. It was observed that the corrosion resistance decreased in the composite samples subjected to grain refinement, modification, combined action of grain refinement and modification compared to untreated alloy composite. Scanning Electron Microscopy [SEM] has been used to substantiate the corrosion data. On the other hand, mechanical properties namely hardness and ultimate tensile strength improved greatly in the modified samples compared to grain refined and grain refined and modified samples.

Keywords

Metal matrix composites, Ceramic microspheres, LM6 and Corrosion
User
Subscription Login to verify subscription
Notifications
Font Size

Abstract Views: 183

PDF Views: 0




  • Corrosion Behaviour of Aluminium Alloy-Flyash Composites used in ESP

Abstract Views: 183  |  PDF Views: 0

Authors

Suresh N.
Dept. of Mechanical Engineering, BMS Institute of Technology, Bangalore -560 064, India
Venkateswaran S.
Principal, BMS Institute of Technology, Bangalore -560 064, India
Seetharamu S.
Materials Technology Division, Central Power Research Institute, Bangalore- 560 080, India
Sampath Kumaran
Materials Technology Division, Central Power Research Institute, Bangalore- 560 080, India
Ramachandran B. E.
Dept. of Chemistry, BMS Institute of Technology, Bangalore -560 064, India
Praveen Kumar T. N.
Dept. of Mechanical Engineering, BMS Institute of Technology, Bangalore -560 064, India

Abstract


The effect of corrosion on aluminium alloy (LM6) containing ceramic fl y ash based microspheres is investigated in this work. Stir casting route has been employed to disperse 10 % ceramic microspheres as reinforcement in the alloy matrix. Further, the alloy system was subjected to grain refinement, modification as well as combined action of grain refinement and modification. Three sets of LM6 alloy castings were produced in each case, to check for reproducibility. The corrosion resistance was evaluated by immersing the samples in 3% NaCl solution. The pH and electrical conductivity were measured to assess the damage due to corrosion. It was observed that the corrosion resistance decreased in the composite samples subjected to grain refinement, modification, combined action of grain refinement and modification compared to untreated alloy composite. Scanning Electron Microscopy [SEM] has been used to substantiate the corrosion data. On the other hand, mechanical properties namely hardness and ultimate tensile strength improved greatly in the modified samples compared to grain refined and grain refined and modified samples.

Keywords


Metal matrix composites, Ceramic microspheres, LM6 and Corrosion



DOI: https://doi.org/10.33686/prj.v9i1.189604