Published in Matériaux & Techniques
This study aims to identify the factors enhancing the performance of Scheffler parabolic solar concentrators as part of the design of a solar kiln for firing ceramic materials, with a particular emphasis on the crucial role of the concentrator’s concentration factor in reaching the necessary sintering temperature of around 1000 °C. This challenge i...
Published in Matériaux & Techniques
This research presents a comprehensive investigation into the diverse coastal sands of the Doukkala region, encompassing El Jadida, El Haouzia, Lala Aicha El Bahria, Sidi Bounnayem, and Mazagan Beach. To achieve this, we employed a range of analytical techniques, including sieving granulometry, bulk density, absolute density, water absorption, pH m...
Published in Matériaux & Techniques
Energy harvesting is a very promising area for clean energy production, especially for unused and wasted energy sources such as thermal energy. Therefore, a pyroelectric PU-xPZT material is implemented to convert waste heat into electricity to make low-energy devices autonomous and contribute to sustainable development. The goal of this contributio...
Published in Matériaux & Techniques
A lead-free piezoelectric ceramic, Bismuth titanate (Bi4Ti3O12), is synthesized as an environmentally friendly alternative to the commonly used Lead Zirconate Titanate (PZT). This study focuses on investigating the effects of processing conditions on the morphological and structural properties of piezoelectric ceramics. The material is synthesized ...
Published in Matériaux & Techniques
In this work, vanadate-fluorapatite, V2O5/Ca10(PO4)6F2, nanocrystals were successfully synthesized through a straightforward one-step co-precipitation method. This method was based on two toxic solid wastes, which are mainly generated as by-products during sulfuric acid manufacturing and in the phosphate industry. The two solid wastes were mainly b...
Published in Matériaux & Techniques
Several nonlinear treatments of piezoelectric voltages have been studied and developed. These techniques greatly improve the switching capabilities of piezoelectric materials. There are active and passive vibration control techniques: Passive technology involves connecting piezoelectric elements to a passive grid; and active technology requires a b...
Published in Matériaux & Techniques
In this work, we explore a new experimental study of Barium oxide (BaO) thin films, fabricated using the physical vapor deposition (PVD) technique on both glass and silicon substrates. The BaO thin films have emerged as highly adaptable materials with immense potential across multiple technological domains. The investigation focuses on the morpholo...
Published in Matériaux & Techniques
Considering the temporary ecological challenges confronting our global milieu, the imperative to transition towards sustainable and conscientious methodologies looms as an unequivocal necessity. As purveyors of scientific inquiry our mandate is to meticulously explore a plethora of alternatives, liberating ourselves from the shackles of deleterious...
Published in Matériaux & Techniques
In this study, a model of micro-milling cutting forces based on elementary cutting experiments is developed. Elementary cutting tests were used to identify the parameters of a new model that includes the uncut chip thickness and the effect of the cutting edge radius. This model assumes a straight cutting edge and a rigid cutting tool and is divided...
Published in Matériaux & Techniques
Les effets du temps et de la température de vieillissement sur le comportement de la transformation martensitique d’un alliage à mémoire de forme de type CuZnAl à 4 % d’Al ont été étudiés. Les variations des températures de transformation, le changement dans la microstructure, la microdureté en fonction du temps et de la température de vieillisseme...
