The influence of ni content on the corrosion resistance of cu-ni-sn-c-p sintered alloys in poor quality fuel

Satoshi Sunada*, Yusuke Mizukoshi, Riku Sakagami, Shinichi Takezoe, Yoshinari Ishii, Norio Nunomura, Masahiko Hatakeyama

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The copper alloys, which were added Nickel show high corrosion resistance. Therefore, they are generally used in environments of poor quality fuel. However, it is expected that we reduce the amount of Ni in copper alloy, due to increase of Nickel consumption in recent years. We used five different types of sintered material samples that are different in the content of Nickel in the present study, to investigate the influence of Ni content to corrosion resistance quantitatively. These samples were used for the experiment of open circuit potentials, anodic and cathodic polarization curves measurements. To simulate environment in poor quality fuel we employed solution of 0.5 M Na2S + 0.1 M NaOH (pH = 13.05). The experiment of open circuit potentials shows that samples that the content of Nickel is less than 42 mass% were formed passivation film on surface of sample during aeration. The experiment of polarization curves measurements show that the each sample was implied behavior of forming passivation film corresponding to potential-pH diagram of Cu in anodic region basically. In addition, the 36.4 mass% Nickel was remarkably improved corrosion resistance.

Original languageEnglish
Title of host publicationTHERMEC 2018
EditorsR. Shabadi, Mihail Ionescu, M. Jeandin, C. Richard, Tara Chandra
PublisherTrans Tech Publications Ltd
Pages1734-1742
Number of pages9
ISBN (Print)9783035712087
DOIs
StatePublished - 2018
Event10th International Conference on Processing and Manufacturing of Advanced Materials, 2018 - Paris, France
Duration: 2018/07/092018/07/13

Publication series

NameMaterials Science Forum
Volume941 MSF
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference10th International Conference on Processing and Manufacturing of Advanced Materials, 2018
Country/TerritoryFrance
CityParis
Period2018/07/092018/07/13

Keywords

  • Copper
  • Corrosion
  • Nickel
  • Sintered alloys

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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