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THE FORMATION OF TEXTURE STRUCTURE BY SIMULTANEOUS ATTACK OF OXYGEN AND SULFUR ON PURE CHROMIUM AND Cr-Ni ALLOYS AT HIGH TEMPERATURE |
Wang Dacheng (Guizhou Research Centre of Physical Testing and Chemical Analysis; Guiyang; Guizhou) Douglass; D. L. (Materials Science and Engineering Dept.. University of California; Los Angeles; CA. 90024; USA.) |
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Abstract The simultaneous oxidation and sulfidation of chromium and nickel-chromium alloys was studied at 800 C in the atmospheres of ps_2=1×10~(-6) atm. and po_2=5×10~(-21)-5×10~(-20) atm., which are within the Cr_2O_3 stability field and just beside the Cr_3S_4-Cr_2O_3 equilibrium boundary of Ellingham diagram for Cr-O-S. It was found that, at the initial reaction stage, Cr_3S_4 was formed along with Cr_2O_3 and scales were in the form of texture strueture. Aninereasein the oxygen partial pressure or a decrease in chromium content in the alloys restrained the development of the texture structure. The reaction mechanism is discussed.
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Received: 25 June 1984
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Cite this article:
Wang Dacheng (Guizhou Research Centre of Physical Testing and Chemical Analysis; Guiyang; Guizhou) Douglass; D. L. (Materials Science and Engineering Dept.. University of California; Los Angeles; CA. 90024; USA.). THE FORMATION OF TEXTURE STRUCTURE BY SIMULTANEOUS ATTACK OF OXYGEN AND SULFUR ON PURE CHROMIUM AND Cr-Ni ALLOYS AT HIGH TEMPERATURE. J Chin Soc Corr Pro, 1984, 4(3): 199-205.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1984/V4/I3/199
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