Scale formation on si-containing steels

Cheng Hsien Yang, Wen-Ta Tsai, Szu Ning Lin, Chih Hsiung Chen

Research output: Contribution to journalConference articlepeer-review

Abstract

The effect of Si content (in the range of 0.01 to 1.91 wt.%) on scale formation on electric steels in air at the temperature ranging from 850 to 1200 °C was investigated. The effect of applied tensile strain on oxidation behavior was also explored. A thermo-mechanical simulator (Gleeble machine) was employed to conduct the oxidation tests at different strain rates. The experimental results showed that at temperature below 1100 °C the oxidation rate decreased with increasing Si content in the steel. The formation of an inner scale, mainly consisting of silica, was responsible for the improved oxidation resistance. However, a substantial increase in oxidation rate due to the formation of molten eutectic fayalite (Fe2Si04) was observed when the temperature was raised to 1200 °C. Under straining conditions and at very short oxidation time, the inner scale structure was slightly modified though the scale thickness remained almost unchanged for the steel containing 1.91 wt% Si.

Original languageEnglish
Pages (from-to)84491-844911
Number of pages760421
JournalNACE - International Corrosion Conference Series
Publication statusPublished - 2008 Dec 1
EventCorrosion 2008 - New Orleans, LO, United States
Duration: 2008 Mar 162008 Mar 20

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Chemical Engineering
  • General Materials Science

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