A comparison between the properties of natural hydroxyapatite produced by cold isostatic pressing and spark plasma sintering techniques

作者：Heidari Fatemeh^*; Razavi Mehdi; Zamani Mohammad Ali Askari; Tahriri Mohammadreza; Tayebi Lobat^*

来源：Journal of the Australian Ceramic Society, 2018, 54(2): 337-344.

DOI：10.1007/s41779-017-0158-z

• Natural hydroxyapatite
• Spark plasma sintering
• Cold isostatic pressing
• Density
• Hardness

The natural hydroxyapatite (HA) extracted from cattle bone was produced by cold isostatic pressing (CIP) and spark plasma sintering (SPS) techniques and sintered at 1350 and 1150 degrees C, respectively. Scanning electron microscope (SEM), X-ray diffraction (XRD) analysis, X-ray fluorescence (XRF) analysis, Fourier transform infrared spectroscopy (FTIR), and mechanical testing were carried out to characterize the microstructure and chemical and mechanical properties of developed materials. The bioactivity of samples was also studied by immersing the samples in simulated body fluid for 28 days. The results indicated that the density of bulk HA produced by SPS technique was higher than that of the CIP samples, where the density of bulk HA produced by SPS reached theoretical density. In addition, the hardness of the SPS sample was higher than the hardness of the CIP samples.

• 出版日期2018-6