ISSN:
1573-9139
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Conclusions Based on a bauxite concentrate, we obtained a mullite-bearing refractory exhibiting high-temperature strength. The refractory materials produced by melting the bauxite concentrate with alumina and silica additions show the presence of solid solutions of mullite whose basicity was quantitatively evaluated using chemical and IR-spectroscopic methods. The conducted studies confirm the assumption (hypothesis) that the polymorphic modification of aluminum oxide having the structure of mullite m-Al2O3 can crystallize at high cooling rates that are close to quenching rates and, also, at a high Al2O3 content (99.9%). The IR absorption spectrum and the refractive index of the suggested phase have been determined. IR-spectroscopic analysis of the glass phase showed the presence of aluminum atoms having tetrahedral and octahedral coordination in this phase.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01403211
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