✦ LIBER ✦

A study of mechanism of thermal surface deterioration of refractories using X-ray photoelectron spectroscopy

✍ Scribed by W. Pong; D. Yamamoto; T. Novinson

Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 293 KB
Volume: 22
Category: Article
ISSN: 0008-8846
DOI: 10.1016/0008-8846(92)90105-5

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✦ Synopsis

Measurements of x-ray photoelectrons from refractory mortars were made to determine the surface elemental composition after heating the mortars to various temperatures up to 1,000*C. Noticeable changes of the carbon (Is) photoelectron spectra due to heating were observed. Evidence for the presence of calcium carbonate was found after heating to about 150°C. At 800°C, the feature associated with the carbonate did not appear, suggesting the dissociation of the carbonate below 800°C. From 150 to 1,000°C, the carbon (Is) spectra of the mortars are similar to those of carbon impurities in calcium aluminate. Implications of the results for the effect of heating on the strength of the mortar are discussed.

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