A study on flash sintering of hydroxyapatite (HA) is presented in this work. Electric fields up to 2000 V cm(-1) were tested, resulting in sintering at furnace temperature as low as 850 degrees C and density in excess to 90. XRD and FTIR analysis show no decomposition of HA into other phases for conventional as well as for flash sintering. In general, the power (in log scale) versus temperature curve for HA is found to be different from that of other oxide materials and this is attributed to the microstructural changes taking place due to the dehydroxylation reaction occurring during flash sintering. In addition, high furnace temperature and high max power density during flash sintering seems to lead to the partial melting of the samples, giving (002) preferably oriented microstructure.
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机译：本文介绍了羟基磷灰石（HA）的闪烧研究。测试了高达2000 V cm（-1）的电场，导致在炉温低至850°C且密度超过90%的情况下烧结。XRD和FTIR分析显示，对于传统烧结和闪烧，HA不会分解成其他相。一般来说，HA的功率（对数尺度）与温度曲线与其他氧化物材料不同，这归因于由于闪烧过程中发生的脱羟基反应而发生的微观结构变化。此外，闪蒸烧结过程中的高炉温和高最大功率密度似乎导致样品的部分熔化，从而给出（002）优选取向的微观结构。
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