The Mechanism and the Condition of Occurrence in the Erosion-Corrosion Damage of Carbon Steel by Gas-Liquid Two-Phase Flow

Yutaka Watanabe, Tetsuo Shoji, Hideaki Takahashi

Research output: Contribution to journalArticlepeer-review

Abstract

The erosion-corrosion characteristics of carbon steel commonly used as piping material subjected to an impinging gas-liquid two-phase flow under various pH, chloride ion concentration and flow rate combinations were investigated. Environmental condition saffected not only the damage rate but also the type of damage. One of these was the enhanced general corrosion observed mainly under high chlorine ion concentration (1 220 ppm) and another was flow-induced pitting corrosin observed under the pH7-[Cl-] 140 ppm condition. Each condition of the chemical solution had its own flow effect. For example, in the case of high chlorine ion concentration, high flow rate accelerated corrosion damage by decreasing diffusion control. On the other hand, under low chlorine ion concentration, high-speed flow decreased the corrosion rate by the action of removing nonprotective oxide layer. To indicate the condition of occurrence for enhanced corrosion damage, a two-dimensional chart which had axes of [Cl-] concentration and flow rate was constructed for each pH value.

Original languageEnglish
Pages (from-to)2294-2298
Number of pages5
JournalTransactions of the Japan Society of Mechanical Engineers Series A
Volume55
Issue number519
DOIs
Publication statusPublished - 1989

Keywords

  • Carbon Steel
  • Corrosion Product
  • Environmental Condition
  • Erosion-Corrosion
  • Flow Rate
  • Gas-Liquid Two-Phase Flow
  • Pitting Corrosion
  • [Cl] Contamination
  • pH Value

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'The Mechanism and the Condition of Occurrence in the Erosion-Corrosion Damage of Carbon Steel by Gas-Liquid Two-Phase Flow'. Together they form a unique fingerprint.

Cite this