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Superplastic deformation of transparent hydroxyapatite

机译:透明羟基磷灰石的超塑性变形

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摘要

Transparent, nanocrystalline hydroxyapatite with an average grain size of 170 nm was fabricated by spark plasma sintering. The superplastic flow behavior of the hydroxyapatite specimen was examined at temperatures ranging from 950 to 1050 °C. The hydroxyapatite specimens exhibited superplasticity under the test conditions examined. A maximum elongation of 486% was achieved at 1000 °C and an initial strain rate of 1.0 × 10~(-4) s~(-1). The excellent tensile ductility in transparent, nanocrystalline hydroxyapatite was attributed to the very fine grain size and pore-free microstructure.
机译:通过火花等离子体烧结制备平均晶粒尺寸为170nm的透明的纳米晶体羟基磷灰石。在950至1050°C的温度范围内检查了羟基磷灰石样品的超塑性流动行为。羟基磷灰石样品在检查的测试条件下表现出超塑性。 1000°C时最大伸长率达到486%,初始应变率为1.0×10〜(-4)s〜(-1)。透明的纳米晶体羟基磷灰石具有出色的拉伸延展性,这归因于非常细的晶粒尺寸和无孔的微观结构。

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