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

Abstract

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.

Decoding Electrocatalysis: Transforming Aluminum-Clad TLC Plates into Potash Alum for Hydrogen Evolution Exploration

“…Scientists globally are searching for clean and renewable energy sources to tackle these pressing concerns [1]. In recent years, significant progress has been made in developing materials with cost-effective properties [2][3][4], particularly in exploring energy conversion and enhancing storage efficiency on a pilot scale [5,6]. Electrochemical hydrogen production emerges as a promising solution in response to the urgent need for carbon-free energy, aligning with environmental sustainability goals and economic well-being [7,8].…”