Highly corrosion-resistant amorphous CrNiP alloys

B. P. Zhang, E. Akiyama, H. Habazaki, A. Kawashima, K. Asami, K. Hashimoto

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

To prepare highly corrosion-resistant amorphous CrNiP alloys, the amorphizable composition range was determined and the corrosion resistance was assessed from the weight loss in concentrated HCl and HF solutions. All the amorphous CrNiP alloys showed extremely high corrosion resistance in both concentrated HCl and HF solutions. The effects of crystallinity and the chromium content on the corrosion resistance were clearly observed in the concentrated HCl solution. In the concentrated HF solution, all the CrNiP alloys were extremely corrosion resistant, while the binary CrNi alloys had low corrosion resistance. The amorphous CrNi19P alloys also exhibited the low corrosion rate of about 0.004 mm per year in the mixture of aggressive 12 M HCl and 47% HF solution. The effects of crystallinity and alloying with phosphorus and chromium on the corrosion resistance in HCl and HF solutions were explained in terms of the homogeneity of alloys, the formation of an elemental phosphorus layer during the initial dissolution, and the formation of the highly protective, passive chromium oxyhydroxide.

Original languageEnglish
Pages (from-to)1114-1118
Number of pages5
JournalMaterials Science and Engineering A
Volume181-182
Issue numberC
DOIs
Publication statusPublished - 1994 May 15

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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    Zhang, B. P., Akiyama, E., Habazaki, H., Kawashima, A., Asami, K., & Hashimoto, K. (1994). Highly corrosion-resistant amorphous CrNiP alloys. Materials Science and Engineering A, 181-182(C), 1114-1118. https://doi.org/10.1016/0921-5093(94)90813-3