In order to forestall premature breakdowns of marine pumps, five pumps with impellers made of different metals were run continuously for about a year. Superb corrosion resistance was exhibited by Mo-austenitic stainless steel and duplex stainless steel as compared with bronze. Although a stainless steel casing suffered crevice corrosion, this was readily remedied by application of a suitable sealing. When stainless steel was used either for the impeller or for the casing, parts such as the mouthring that were made of bronze were damaged severely by galvanic corrosion. On the basis of those findings, a way was seen that will lead to development of a "maintenance-free" marine pump.

  • Supplemental Notes:
    • Performed by Nippon Metal Industries Company, Limited. Original Japanese copies, no charge; English copies, request price.
  • Corporate Authors:

    Ishikawajima-Harima Heavy Industries Co., Ltd.

    2-16, Toyosu 3 Chome, Koto-Ku
    Tokyo 135,   Japan 
  • Publication Date: 1972-5


  • Japanese

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00043197
  • Record Type: Publication
  • Source Agency: Ship Structure Committee
  • Files: TRIS
  • Created Date: Apr 6 1973 12:00AM