Due to unique osteogenic properties, tricalcium phosphate (TCP) has gained relevance in the field of bone repair. The development of novel and rapid sintering routes is of particular interest since TCP undergoes to high-temperature phase transitions and is widely employed in osteoconductive coatings on thermally-sensitive metal substrates.

In the present work, TCP bioceramics was innovatively obtained by Ultrafast High-temperature Sintering (UHS). Ca-deficient hydroxyapatite nano-powder produced by mechanochemical synthesis of mussel shell-derived calcium carbonate was used to prepare the green samples by uniaxial pressing. These were introduced within a graphite felt which was rapidly heated by an electrical current flow, reaching heating rates exceeding 1200 °C min⁻¹. Dense (> 93%) ceramics were manufactured in less than 3 min using currents between 25 and 30 A. Both β and α-TCP were detected in the sintered components with proportions depending on the applied current. Preliminary tests confirmed that the artifacts do not possess cytotoxic effects and possess mechanical properties similar to conventionally sintered materials. The overall results prove the applicability of UHS to bioceramics paving the way to new rapid processing routes for biomedical components.

由于独特的成骨特性，磷酸三钙 (TCP) 在骨修复领域获得了相关性。由于 TCP 经历高温相变并广泛用于热敏金属基材上的骨传导涂层，因此开发新型快速烧结路线特别令人感兴趣。

在目前的工作中，TCP 生物陶瓷是通过超快高温烧结 (UHS) 创新获得的。通过机械化学合成贻贝壳衍生的碳酸钙生产的缺钙羟基磷灰石纳米粉体通过单轴压制制备绿色样品。这些被引入石墨毡中，石墨毡被电流快速加热，加热速率超过 1200 °C min ^-1. 使用 25 至 30 A 的电流在不到 3 分钟的时间内制造出致密 (> 93%) 陶瓷。在烧结部件中检测到 β-TCP 和 α-TCP，其比例取决于施加的电流。初步测试证实，这些工件不具有细胞毒性作用，并且具有与传统烧结材料相似的机械性能。总体结果证明了 UHS 对生物陶瓷的适用性，为生物医学组件的新快速加工路线铺平了道路。