Influence of Two Steps Sintering Parameters on Tribological Behaviour of Hybrid Hydroxyapatite-Based Biocomposites


Two steps sintering route

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Gingu O, Harabor A, Rotaru P, Pascu I, Ciupitu I, Benga G, Sima G, Olei A. Influence of Two Steps Sintering Parameters on Tribological Behaviour of Hybrid Hydroxyapatite-Based Biocomposites . J. Adv. Therm. Sci. Res. [Internet]. 2015 Jan. 9 [cited 2022 May 18];1(2):66-70. Available from:


The nanostructured biocomposites with hydroxyapatite (HAP) matrix reinforced by titanium (Ti), processed by two steps sintering (TSS) route in argon atmosphere, provide excellent wear behaviour when they are elaborated in specific sintering parameters. The wear tests, developed in steel ball-on-disc dry conditions, show low wear rates about 2x10-4 [mm3/Nm] when the biocomposites are processed at 750...8000oC for 450...600 min. in comparison with high wear rates 7x10-4 [mm3/Nm] in 700...7500oC for 300 min. as TSS parameters. The X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis outline the structural features that explain this wear behaviour.


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