Prof. Dr. José M. Córdoba Gallego
Hippocrates after curing many diseases himself fell sick and died. Alexander, and Pompeius, and Caius Caesar, after so often completely destroying whole cities, and in battle cutting to pieces many ten thousands of cavalry and infantry, themselves too at last departed from life. What means all this? Thou hast embarked, thou hast made the voyage, thou art come to shore; get out. If indeed to another life, there is no want of gods, not even there. But if to a state without sensation, thou wilt cease to be held by pains and pleasures, and to be a slave to the vessel, which is as much inferior as that which serves it is superior: for the one is intelligence and deity; the other is earth and corruption. M.A.
Good life everybody!
UPCOMING EVENTS
Surface Engineering Course Beginning
Faculty of Physics (US), Seville, sept 2025
MY LATEST RESEARCH
Journal of Cleaner Production 437 (2024) 140761. https://doi.org/10.1016/j.jclepro.2024.140761
The lignocellulosic biomass recalcitrance is the uppermost factor for the utilization of this renewable resource. In this research, a set of different biomass sources (farmer, harvested wild trees and secondary products) were studied to evaluate the
high efficiency of the non-liquid nitrogen (LN) and LN-treated biomass samples’ planetary ball milling performance. The results have shown a high level on the rupture of the crystallinityand depolymerization degrees of the cellulose and the lignin, for both, non-LN and LN-treated samples. The thermogravimetric analysis showed a clear diminishing in temperature degradation, and a larger amount of biomass degraded at lower temperature, as well as, a high chemical oxidation degree than not milled samples. Finally, the LN-treated samples even exhibited a lower degradation temperature, a larger amount of biomass degraded at lower temperature and a higher oxidation degree, than those non-LN milled.
International Journal of Refractory Metals and Hard Materials 128 (2025) 107094. https://doi.org/10.1016/j.ijrmhm.2025.107094
A mechanically induced self-sustaining reaction was carried out to synthesize a Ti0.9Ta0.1C0.5N0.5/Co powdered cermets, and then they were sintered by spark plasma sintering. Microstructural parameters effects studied by image analysis, and chemical composition (studied by Rietveld analysis) on the microhardness, hardening rate, fracture toughness, transverse rupture strength, and Young’s modulus were related to the sintering conditions. The optimization of the sintering conditions (1150 ◦C, 30 MPa, and 8 min’ dwell time) drove to a homogeneous microstructure and outstanding mechanical properties. Also, the tantalum was suggested to influence the interfacial energies of the system, yielding a stronger hard phase skeleton.