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FORMATION OF CONTINUOUS SERIES OF SOLID SOLUTIONS FROM POWDERS PREPARED BY HYDRAZINE METHOD: THE SYSTEM Cr2O3-Al2O3 The specimens obtained from the DTA runs after cooling were examined by X-ray diffraction (XRD) using Ni-filtered CuK, radiation and a goniometer scanning speed of 0.25¡±/min. Interplanar spacings were measured with the aid of an internal standard of high-purity silicon, and unit-cell values were determined by a least-squares refinement. Electron microscopic examination of powders was carried out by transmission electron microscopy (TEM). |
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