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Measurement of the crystallinity of hydroxyapatite deposited by plasma spray

机译：等离子喷涂沉积羟磷灰石结晶度的测量

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As part of a characterization and mechanical research about hydroxyapatite (HA) plasma deposits for hip prosthesis, we addressed the problem of determining their crystallinity. A traditional normalization method employed by several laboratories is based on X-ray diffraction by a powder mixture of the investigated HA sample with a standard of crystalline powder, namely Al_2O_3. This method is quite unsatisfactory, as very often delivers unreasonable results. In order to overcome these difficulties we investigated some new methods for determining the crystallinity of HA sample, which are based on X-ray diffraction. All these methods provide reasonable results.
机译：作为关于髋关节假体的羟基磷灰石（HA）血浆沉积物的表征和力学研究的一部分，我们解决了确定其结晶度的问题。几个实验室采用的传统归一化方法是基于X射线衍射，其中是将研究的HA样品与结晶粉末标准品Al_2O_3混合在一起。该方法非常不令人满意，因为通常会产生不合理的结果。为了克服这些困难，我们研究了一些基于X射线衍射测定HA样品结晶度的新方法。所有这些方法都可以提供合理的结果。

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