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X-ray diffraction of different samples of ironaluminium oxide pigments The d-values and the relative intensities I/Io of X-ray pattern for of the pigments prepared are shown in Figure 3. Data showed that, the calcinations of the three mixtures, 3Al2O3: Fe2O3, 1Al2O3: 1Fe2O3, and 1Al2O3: 3Fe2O3, resulted in one solid solution in each case without the appearance of crystalline phase beside it. This indicated that the mixing of any proportion of the components easily formed solid solution. The d-values of the solid solutions formed were located between the d-values of a-Al2O3 and a-Fe2O3. The colour of the solid solution formed depends on its composition. The solid solution became deep brownish red when its iron content was higher, while it became light brown when excess alumina existed in the mixture.  aszx.png  zxas.png |
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篮球少年: 金币+6, 翻译EPI+1, ★★★很有帮助 2014-09-20 13:19:35
篮球少年: 金币+6, 翻译EPI+1, ★★★很有帮助 2014-09-20 13:19:35
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铁 - 铝氧化物颜料不同样品的X射线衍射 所制备颜料X射线图案的d值和相对强度 I/I见图3。数据表明，三种混合物3Al2O3：Fe2O3，1Al2O3：1Fe2O3，和1Al2O3：3Fe2O3的焙烧在每种组合情况下都可以形成了一种固体溶液，不伴有结晶相的出现。这表明，该组成成分按任何比例混合都很容易地形成固体溶体。所形成的固体溶液的d值在a-Al2O3和a-Fe2O3之d值之间。所形成的固体溶液的颜色取决于它的组成。当其铁含量高时，该固体溶体成为深褐色红色，当过量的氧化铝存在于混合物中时则呈浅棕色。 |
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