Ponnusamy Nandha Kumar, Lee Hoyeol, Yoo Jin Myoung, Nam Seung Yun
Industry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan 48513, Korea.
Department of Biomedical Engineering, Pukyong National University, Busan 48513, Korea.
Materials (Basel). 2022 Apr 17;15(8):2924. doi: 10.3390/ma15082924.
Biocompatible -Ca(PO) and mechanically stable ZrO composites are currently being combined to overcome the demerits of the individual components. A series of five composites were synthesized using an aqueous precipitation technique. Their structural and mechanical stability was examined through X-ray diffraction, Rietveld refinement, FTIR, Raman spectroscopy, high-resolution scanning electron microscopy, and nanoindentation. The characterization results confirmed the formation of -Ca(PO)--ZrO composites at 1100 °C. Heat treatment above 900 °C resulted in the degradation of the composites because of cationic interdiffusion between Ca ions and O vacancy in Zr ions. Sequential thermal treatments correspond to four different fractional phases: calcium-deficient apatite, -Ca(PO), -ZrO, and -ZrO. The morphological features confirm in situ synthesis, which reveals abnormal grain growth with voids caused by the upsurge in ZrO content. The mechanical stability data indicate significant variation in Young's modulus and hardness throughout the composite.
生物相容性的Ca(PO)和机械稳定的ZrO复合材料目前正在被结合起来以克服各个组分的缺点。使用水相沉淀技术合成了一系列五种复合材料。通过X射线衍射、Rietveld精修、傅里叶变换红外光谱、拉曼光谱、高分辨率扫描电子显微镜和纳米压痕测试对它们的结构和机械稳定性进行了研究。表征结果证实了在1100°C下形成了-Ca(PO)--ZrO复合材料。由于Ca离子与Zr离子中的O空位之间的阳离子相互扩散，900°C以上的热处理导致复合材料降解。连续热处理对应于四个不同的分数相：缺钙磷灰石、-Ca(PO)、-ZrO和-ZrO。形态特征证实了原位合成，这揭示了由于ZrO含量的增加导致有空隙的异常晶粒生长。机械稳定性数据表明整个复合材料的杨氏模量和硬度存在显著变化。
