Crevice Corrosion of Aluminium and It’s Prevention in Automobile Coolant Circuit

This paper deals with the study of the phenomenon of crevice corrosion of aluminium by using an example of a corrosion failure of a joint in the automobile coolant circuit. A number of joint failures were studied to understand the corrosion pattern and for various metallurgical aspects like chemistry, hardness and microstructure. The corrosion products were analyzed using Scanning Electron Microscopy (SEM) and Energy Dispersive X-Ray Spectroscopy (EDS). This analysis indicated that the corrosion products mostly contained Aluminium Oxides with other contaminants like chlorides. The studies revealed that the clamped joint of the aluminium part and rubber hose led to the formation of a crevice with the engine coolant acting as the corrosive medium. The corrosion behavior at the location was affected by environmental factors like temperature, pH and chloride contamination.

• Record URL:
  • https://doi.org/10.4271/2017-26-0170
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Abstract reprinted with permission of SAE International.
• Authors:
  • Pillai, Pratik
  • Venugopal, Sivakumar
  • Gopalan, Vijaysankar
• Conference:
  • Symposium on International Automotive Technology 2017
  • Location: Pune , India
  • Date: 2017-1-18 to 2017-1-20
• Publication Date: 2017-1-10

Language

• English

Media Info

• Media Type: Web
• Features: Figures; Illustrations; Photos; References;
• Serial:
  • SAE Technical Paper
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Aluminum; Corrosion; Engine cooling systems; Failure analysis; Nozzles
• Subject Areas: Highways; Materials; Vehicles and Equipment;

Filing Info

• Accession Number: 01709195
• Record Type: Publication
• Source Agency: SAE International
• Report/Paper Numbers: 2017-26-0170
• Files: TRIS, SAE
• Created Date: Jun 27 2019 2:41PM