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

研究成果: Article査読

26 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)391-397
ページ数7
ジャーナルJournal of Pressure Vessel Technology, Transactions of the ASME
123
3
DOI
出版ステータスPublished - 2001 8

ASJC Scopus subject areas

  • 安全性、リスク、信頼性、品質管理
  • 材料力学
  • 機械工学

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