Oxidation rate of advanced heat-resistant steels for ultra-supercritical boilers in pressurized superheated steam

Yong Sun Yi, Yutaka Watanabe, Tatsuo Kondo, Hiroshi Kimura, Minoru Sato

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

Oxidation kinetics of recently developed ferritic heat-resistant steels, HCM12A, NF616, and HCM2S, were investigated in a superheated steam to evaluate the effects of chemical composition of the steels, testing temperature (560-700°C), steam pressure (1-10 MPa), and degrees of microstructural evolution by aging on oxidation. The contribution of alloyed Cr to oxidation resistance was pronounced above 600°C, while no material dependency was found at 600°C or lower. The apparent activation energy of the oxidation rate clearly changed at around 600°C for NF616 and HCM12A. In contrast, HCM2S showed single activation energy over the range of temperatures. Although temperature and chemical composition were the major factors, steam pressure also showed a clear negative effect on the oxidation rate in the lower temperature range, 570-600°C.

Original languageEnglish
Pages (from-to)391-397
Number of pages7
JournalJournal of Pressure Vessel Technology, Transactions of the ASME
Volume123
Issue number3
DOIs
Publication statusPublished - 2001 Aug

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint

Dive into the research topics of 'Oxidation rate of advanced heat-resistant steels for ultra-supercritical boilers in pressurized superheated steam'. Together they form a unique fingerprint.

Cite this