Wear and corrosion of wrought a6061 aluminium alloy in dot3 brake fluid
- Ajibola, Olawale O., Ige, Oladeji O., Olubambi, Peter A.
- Authors: Ajibola, Olawale O. , Ige, Oladeji O. , Olubambi, Peter A.
- Date: 2018
- Subjects: Hydraulic Brake Fluid , Piston Application , Wear
- Language: English
- Type: Article
- Identifier: http://hdl.handle.net/10210/263343 , uj:27838 , Citation: Ajibola, O.O., Ige, O.O. & Olubambi, P.A. 2018. Wear and corrosion of wrought a6061 aluminium alloy in dot3 brake fluid. International Journal of Engineering & Technology, 7 (2):512-519.
- Description: Abstract: The twofold impact of wear and corrosion on wrought A6061 alloy in hydraulic DOT3 brake fluid environment was studied. The wear studies were performed on the samples using a developed wear-jig. Weight loss corrosion test method was used to determine the corrosion rate of the wrought A6061 alloy samples immersed in the brake fluid for a total of 1680 hours. From the results of wear tests carried out on the A6061 alloy sample with brake oil, the highest wear value of 5.24x10-7 mg/mm2/cycle (approx.) was obtained from 6 N (approx) force after 130 minutes. The wrought A6061 alloy material demonstrated the highest corrosion rates nearly 3.0 x10-2 mg/mm2/yr within the early 168 hours of immersion in brake fluid. The result is practically lower than the corrosion rate of cast specimen in DOT3 brake oil or some other alloys immersed in other corrosive media that were previously reported in the literature. The results show that small amount of chemical corrosion is sufficient to cause and accelerate mechanical wear of the material in usage.
- Full Text:
- Authors: Ajibola, Olawale O. , Ige, Oladeji O. , Olubambi, Peter A.
- Date: 2018
- Subjects: Hydraulic Brake Fluid , Piston Application , Wear
- Language: English
- Type: Article
- Identifier: http://hdl.handle.net/10210/263343 , uj:27838 , Citation: Ajibola, O.O., Ige, O.O. & Olubambi, P.A. 2018. Wear and corrosion of wrought a6061 aluminium alloy in dot3 brake fluid. International Journal of Engineering & Technology, 7 (2):512-519.
- Description: Abstract: The twofold impact of wear and corrosion on wrought A6061 alloy in hydraulic DOT3 brake fluid environment was studied. The wear studies were performed on the samples using a developed wear-jig. Weight loss corrosion test method was used to determine the corrosion rate of the wrought A6061 alloy samples immersed in the brake fluid for a total of 1680 hours. From the results of wear tests carried out on the A6061 alloy sample with brake oil, the highest wear value of 5.24x10-7 mg/mm2/cycle (approx.) was obtained from 6 N (approx) force after 130 minutes. The wrought A6061 alloy material demonstrated the highest corrosion rates nearly 3.0 x10-2 mg/mm2/yr within the early 168 hours of immersion in brake fluid. The result is practically lower than the corrosion rate of cast specimen in DOT3 brake oil or some other alloys immersed in other corrosive media that were previously reported in the literature. The results show that small amount of chemical corrosion is sufficient to cause and accelerate mechanical wear of the material in usage.
- Full Text:
Comparative effects of corrosion on electroless-nickel plated A6061 alloys in DOT3 brake fluid
- Ajibola, Olawale O., Olubambi, Peter A.
- Authors: Ajibola, Olawale O. , Olubambi, Peter A.
- Date: 2018
- Subjects: Corrosive Wear , Aluminum Substrate , Hydraulic Brake Fluid
- Language: English
- Type: Article
- Identifier: http://hdl.handle.net/10210/291239 , uj:31623 , Citation: Ajibola, O.O. & Olubambi, P.A. 2018. Comparative effects of corrosion on electroless-nickel plated A6061 alloys in DOT3 brake fluid. International Journal of Engineering & Technology, 7 (2) (2018) 927-934.
- Description: Abstract: Aluminium alloys used in automobile brake master cylinder pistons wear by corrosion due to contamination and chemical reaction of the contacting brake fluid. The study investigates the corrosion of electroless-nickel (EN) deposition enhanced cast aluminium alloy master cylinder piston surfaces immersed in hydraulic brake oil. Cast specimens were produced from the as-received wrought A6061 alloy scrap by sand casting. EN plated as-received and cast aluminium alloys specimens were immersed fully in brake oil for 1680 hours and corrosion rates were determined every 24 hours. Test samples were characterised using the hardness tester, atomic absorption spectrometer, metallurgical photo-microscope, x-ray diffractometer; and SEM with EDX attachment. Both surfaces corroded in the order of electroless-nickel plated cast aluminium alloy (ENCA) < electroless-nickel plated as-received aluminium alloy (ENAA) at 0.0235 and 0.0251 rates (mg/mm2/y) results which showed improvement in the corrosion resistance with significant influence of electroless-nickel coating in reducing corrosion rates of aluminium alloy in brake oil.
- Full Text:
- Authors: Ajibola, Olawale O. , Olubambi, Peter A.
- Date: 2018
- Subjects: Corrosive Wear , Aluminum Substrate , Hydraulic Brake Fluid
- Language: English
- Type: Article
- Identifier: http://hdl.handle.net/10210/291239 , uj:31623 , Citation: Ajibola, O.O. & Olubambi, P.A. 2018. Comparative effects of corrosion on electroless-nickel plated A6061 alloys in DOT3 brake fluid. International Journal of Engineering & Technology, 7 (2) (2018) 927-934.
- Description: Abstract: Aluminium alloys used in automobile brake master cylinder pistons wear by corrosion due to contamination and chemical reaction of the contacting brake fluid. The study investigates the corrosion of electroless-nickel (EN) deposition enhanced cast aluminium alloy master cylinder piston surfaces immersed in hydraulic brake oil. Cast specimens were produced from the as-received wrought A6061 alloy scrap by sand casting. EN plated as-received and cast aluminium alloys specimens were immersed fully in brake oil for 1680 hours and corrosion rates were determined every 24 hours. Test samples were characterised using the hardness tester, atomic absorption spectrometer, metallurgical photo-microscope, x-ray diffractometer; and SEM with EDX attachment. Both surfaces corroded in the order of electroless-nickel plated cast aluminium alloy (ENCA) < electroless-nickel plated as-received aluminium alloy (ENAA) at 0.0235 and 0.0251 rates (mg/mm2/y) results which showed improvement in the corrosion resistance with significant influence of electroless-nickel coating in reducing corrosion rates of aluminium alloy in brake oil.
- Full Text:
Wear and Corrosion of Wrought A6061 Aluminium Alloy in DOT3 Brake Fluid
- Ajibola, Olawale O., Ige, Oladeji O., Olubambi, Peter A.
- Authors: Ajibola, Olawale O. , Ige, Oladeji O. , Olubambi, Peter A.
- Date: 2018
- Subjects: Hydraulic Brake Fluid , Piston Application , Wear
- Language: English
- Type: Article
- Identifier: http://hdl.handle.net/10210/279684 , uj:30040 , Citation: Ajibola, O.O., Ige, O.O. & Olubambi, P.A. 2018. Wear and Corrosion of Wrought A6061 Aluminium Alloy in DOT3 Brake Fluid. International Journal of Engineering & Technology, 7 (2) (2018):512-519.
- Description: Abstract: The twofold impact of wear and corrosion on wrought A6061 alloy in hydraulic DOT3 brake fluid environment was studied. The wear studies were performed on the samples using a developed wear-jig. Weight loss corrosion test method was used to determine the corrosion rate of the wrought A6061 alloy samples immersed in the brake fluid for a total of 1680 hours. From the results of wear tests carried out on the A6061 alloy sample with brake oil, the highest wear value of 5.24x10-7 mg/mm2/cycle (approx.) was obtained from 6 N (approx) force after 130 minutes. The wrought A6061 alloy material demonstrated the highest corrosion rates nearly 3.0 x10-2 mg/mm2/yr within the early 168 hours of immersion in brake fluid. The result is practically lower than the corrosion rate of cast specimen in DOT3 brake oil or some other alloys immersed in other corrosive media that were previously reported in the literature. The results show that small amount of chemical corrosion is sufficient to cause and accelerate mechanical wear of the material in usage.
- Full Text:
- Authors: Ajibola, Olawale O. , Ige, Oladeji O. , Olubambi, Peter A.
- Date: 2018
- Subjects: Hydraulic Brake Fluid , Piston Application , Wear
- Language: English
- Type: Article
- Identifier: http://hdl.handle.net/10210/279684 , uj:30040 , Citation: Ajibola, O.O., Ige, O.O. & Olubambi, P.A. 2018. Wear and Corrosion of Wrought A6061 Aluminium Alloy in DOT3 Brake Fluid. International Journal of Engineering & Technology, 7 (2) (2018):512-519.
- Description: Abstract: The twofold impact of wear and corrosion on wrought A6061 alloy in hydraulic DOT3 brake fluid environment was studied. The wear studies were performed on the samples using a developed wear-jig. Weight loss corrosion test method was used to determine the corrosion rate of the wrought A6061 alloy samples immersed in the brake fluid for a total of 1680 hours. From the results of wear tests carried out on the A6061 alloy sample with brake oil, the highest wear value of 5.24x10-7 mg/mm2/cycle (approx.) was obtained from 6 N (approx) force after 130 minutes. The wrought A6061 alloy material demonstrated the highest corrosion rates nearly 3.0 x10-2 mg/mm2/yr within the early 168 hours of immersion in brake fluid. The result is practically lower than the corrosion rate of cast specimen in DOT3 brake oil or some other alloys immersed in other corrosive media that were previously reported in the literature. The results show that small amount of chemical corrosion is sufficient to cause and accelerate mechanical wear of the material in usage.
- Full Text:
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