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A surface segregation study in phosphorus-and sulfur-doped type 304 stainless steels

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Abstract

The kinetics of surface segregation of P and S in four purposely doped type 304 stainless steels over the temperature range 550 °C to 850 °C and at aging times up to 12,000 seconds is presented. The saturation coverage of phosphorus is between 30 and 40 at. pct at temperatures greater than 650 °C. Saturation was not attained at 550 °C. The kinetics of the P and S segregation is diffusion controlled and can be described by the surface segregation theory based on a binary system. The results also show that interactions among S, P, and N occur. This interaction affects the kinetic behavior. Site competition of P-N and P-S was also observed.

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Authors and Affiliations

  1. Department of Civil Engineering, Mechanics,and Metallurgy, University of Illinois at Chicago, Box 4348, 60680, Chicago, IL

    Yongbin Im (Research Assistant) & Steven Danyluk (Associate Professor)

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  1. Yongbin Im
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  2. Steven Danyluk
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Im, Y., Danyluk, S. A surface segregation study in phosphorus-and sulfur-doped type 304 stainless steels. Metall Trans A 18, 19–26 (1987). https://doi.org/10.1007/BF02646217

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