机械脱水过程中初始和最终阶段微晶尺寸的演变：Cd（OH）2→Cdo+H2O

Materials Chemistry Pub Date : 1982-07-01 DOI:10.1016/0390-6035(82)90090-6

A. Nonat, J.C. Mutin

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引用次数: 2

摘要

Cd（OH）2在恒温和蒸汽压下的研磨使其快速脱水为CdO。氢氧化物和氧化物的X射线衍射线的半宽随研磨时间的变化分为三个步骤。讨论了颗粒尺寸减小或结构畸变的部分，以及这些改性中的机械脱水。X射线谱线傅立叶分析表明：（i）无论研磨过程中施加的温度和蒸汽压力如何，通过机械脱水得到的氧化物产物的粒度都接近于通过真空下热脱水得到的氧化产物的粒度。（ii）结构的扭曲不取决于脱水过程，它们在两种类型的氧化物中相似，但受蒸汽压力的影响。

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Evolution des dimensions des cristallites des phases initiale et finale au cours de la deshydratation mecanique: Cd(OH)2 →CdO + H2O

The grinding under constant temperature and vapour pressure of Cd(OH)₂ brings about rapid dehydration into CdO.

The evolution v.s. grinding time of the half bredth of hydroxide and oxide X-ray diffraction lines shows three steps. The part of diminution in particle size or distortions of the structure but also of the mechanical dehydration in these modifications is discussed.

The X-ray line profiles Fourier analysis shows that (i) whatever temperature and vapour pressure imposed during the grinding, the particles sizes of the oxide product by mechanical dehydration is close to that of the oxide obtained by thermal dehydration under vacuum. (ii) The distortions of the structure don't depend on the dehydration process, they are similar in the two types of oxide but they are influenced by the vapour pressure.

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Materials Chemistry

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