Mechanical Engineering, Metals and Alloys, Materials Science, General Materials Science
51
Scopus Publications
1094
Scholar Citations
20
Scholar h-index
33
Scholar i10-index
Scopus Publications
Integrity of 316/420 Stainless Steel Tribosystem Under Severe Marine Conditions Karla J. Moreno, María Teresa Hernández-Sierra, J. Santos García-Miranda, Luis Daniel Aguilera-Camacho Metals, 2025 The present study aims to examine the tribological and mechanical integrity of AISI 316/420 stainless steel tribosystem under boundary lubrication with artificial seawater for application in a marine environment. The tribological performance was evaluated through sliding friction tests using a ball-on-disc configuration, at contact pressures ranging from 520 MPa to 1400 MPa. The influence of working contact pressure on the kinetic friction coefficient (µk), wear rate (K), and worn surface damage was studied. Their interaction with the corrosive medium was evaluated using scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) analyses to investigate the wear mechanisms. Microhardness testing was also employed to assess the effect of friction and wear on the mechanical properties of the tribosystem. The results showed that friction and microhardness increased with contact pressure, while the wear rate decreased due to strain hardening. The wear mechanisms included abrasion, adhesion, delamination, and localized oxidation. This study offers new perspectives on the tribological response of stainless steel materials in marine engineering systems, providing valuable insights for material selection and design in corrosive and high-load applications.
Evaluation of Aromatic Organic Compounds as Additives on the Lubrication Properties of Castor Oil María Teresa Hernández-Sierra, José E. Báez, Luis Daniel Aguilera-Camacho, J. Santos García-Miranda, Karla J. Moreno Lubricants, 2024 In the quest for sustainable lubrication solutions, the present research explored the potential of five organic compounds as additives in castor oil (CO) to improve its lubricating properties. The compounds tested were curcumin, eugenol, 1,3-Diphenyl-2-propanone, 1,3-Diphenyl-2-propenone, and 1,3-Diphenyl-1,3-propanedione. The main results showed that each additive enhanced at least one characteristic of CO. Most of the additives lowered the density of the castor oil but increased the viscosity by up to 20%. Curcumin and eugenol were particularly effective in creating thicker lubricant films and higher film thickness ratios. Eugenol and 1,3-Diphenyl-2-propanone significantly reduced the friction coefficient by up to 25%. Wear rate and wear mechanisms were significantly reduced with all the additives, achieving a reduction in wear rate of up to 50% (CO+curcumin). All the additives, except the 1,3-Diphenyl-1,3-propanedione, enhanced the oxidation onset temperature up to 8 °C. The influence of chemical structure was also addressed. The optimal additive combination for a specific application that demands minimal friction and wear, as well as strong oxidation stability, was eugenol, followed by curcumin and 1,3-Diphenyl-2-propanone. Overall, the research contributes to the development of eco-friendly lubricants, aligning with the growing demand for green industrial applications, and highlights the significant tribological benefits of these substances as sustainable additives in biolubricant formulations.
A Comparative Analysis of the Lubricating Performance of an Eco-Friendly Lubricant vs Mineral Oil in a Metallic System J. Santos García-Miranda, Luis Daniel Aguilera-Camacho, María Teresa Hernández-Sierra, Karla J. Moreno Coatings, 2023 Eco-friendly lubricant research continues to increase since it has a comparative performance to commercial mineral lubricants to overcome the effects of environmental impact. However, the efficiency of these green lubricants depends on specific applications. In this study, we analyzed the friction and wear performance of a castor/sesame oil mixture as an eco-friendly lubricant and its comparison to a commercial mineral lubricant tested in a metallic system employed in bearing elements. For this purpose, AISI 8620 steel against ISO 100Cr6 was used as tribological pair. The friction and wear tests were carried out through a Tribometer of ball-on-disk configuration under boundary lubricating conditions, whereas the worn surfaces were investigated by using optical and electron microscopy. The physical properties and the rheological properties of the lubricants were also determined. The friction and wear performance between the eco-friendly lubricant and mineral oil were similar so that the CLE were comparable. The CLE values in terms of friction and wear ranged from 86% to 99.4%, respectively.
Friction and wear improvement by using Curcumin as a natural additive in green lubricants María Teresa Hernández-Sierra, José E Báez, Luis Daniel Aguilera-Camacho, J Santos García-Miranda, Karla J Moreno Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology, 2023 Lubrication is an essential mechanism to make machines and engines more efficient by lowering friction and wear. Despite this, to mitigate environmental damage, lubricants must come from renewable sources and be biodegradables. Therefore, this study analyzed the use of Curcumin as a natural additive in two green oils to improve their tribological and oxidative performance. The density and viscosity of lubricants with and without curcumin additive, as well as the lubrication regime, were determined. The operational performance was analyzed by tribological tests under a ball-on-disk configuration at 100°C based on the ASTM G99. The oxidative behavior of lubricants was examined by studying the IR bands for primary and secondary oxidative products, as well as by DSC-TGA techniques for evaluating the Oxidation Onset Temperature and the thermogravimetric behavior. At the studied conditions, the incorporation of Curcumin into the oils increased the viscosity of the lubricants up to 46%, the friction coefficient decreased up to 70%, and wear was diminished up to 96%, despite working in boundary lubrication. Moreover, the addition of curcumin noticeably enhanced the oxidation behavior of lubricants. The results of this research suggest that Curcumin is an excellent option to improve the physical properties, operational performance, and oxidative stability of green oils to create effective and environmentally friendly lubricants.
Tribological Performance of 100Cr6/8620 Steel Bearing System under Green Oil Lubrication Ricardo Ortega-Álvarez, María T. Hernández-Sierra, Luis D. Aguilera-Camacho, Micael G. Bravo-Sánchez, Karla J. Moreno, et al. Metals, 2022 There is a great need to perform all processes and services more efficiently to reduce energy consumption and material waste. Bearing systems are present in all machines and motors, playing an important role in the reduction of energy consumption. 100Cr6 (ISO 683-17:2014) and AISI 8620 are two typical steels employed in most bearing systems. However, improving the tribological performance of these steels is still required. This study reports the analysis of green lubricants based on mixtures of vegetable oils to improve the friction and wear properties of steel bearing systems. Firstly, a method is presented to identify potential mixtures based on the excess thermodynamic properties. Then, the tribological performance of the 100Cr6/8620 steel bearing system lubricated with the selected mixtures is evaluated by the ball-on-disk method. It was found that the friction and wear behavior of the 100Cr6/8620 steel bearing system can be notably improved by the utilization of oil mixtures rather than pure green oils. The kinetic friction coefficient decreased up to 10% with the ideal mixture of castor and sesame oil, while wear was reduced up to 81% with the ideal mixture of castor and canola oil. Therefore, we suggest that vegetable oil blends may be a good option for the feasible manufacture of biolubricants for bearing systems.
On the tribological and oxidation study of xanthophylls as natural additives in castor oil for green lubrication Karla J. Moreno, María Teresa Hernández-Sierra, José E. Báez, Eloy Rodríguez-deLeón, Luis Daniel Aguilera-Camacho, et al. Materials, 2021 The present study focuses on an introductory analysis of the use of three xanthophylls as additives for green lubricant applications. For this purpose, the additives were characterized by FTIR and 1H-NMR techniques, and the bio-lubricants were described by their physical properties. The effect of the natural compounds on the friction and wear properties of bio-lubricants were evaluated by sliding friction tests under boundary conditions, as confirmed by an analysis of the lubricating film thickness. The antioxidant capacity was analyzed by FTIR spectroscopy. It was observed better wear protection in castor oil with xanthophylls than without these additives. The wear rate was reduced up to 50% compared with neat oil. Lesser beneficial effects were appreciated in friction coefficient since it was increased 25%. The best contribution was observed with astaxanthin as an additive. In addition, a significant improvement in the oxidation of castor oil, complemented with this additive, was exhibited by FTIR analysis. It was found that xanthophylls could be employed as additives for totally biodegradable lubricant applications since they have better tribological and antioxidant behavior than current additives.
On the influence of tribological properties of AISI 4140 annealed steel against ceramic counterparts under dry and lubricated conditions and their effect on steel microstructure Luis D. Aguilera-Camacho, María T. Hernández-Sierra, J. Santos García-Miranda, Karla J. Moreno Metals, 2021 AISI 4140 steel is still one of the most distinguished steels employed in tribological applications because of its low cost, great mechanical properties, and appropriate wear resistance. In this contribution, the tribological performance of AISI 4140 annealed steel against engineering ceramic was analyzed to promote parameters for the application of this steel, especially in systems that are subjected to contact pressures between 490–1240 MPa. Dry and lubricated pin-on-disk experiments were completed at different normal loads. The worn surfaces were analyzed by contact profilometry, optical and scanning electron microscopies, energy dispersive spectroscopy, and microhardness examinations. In dry conditions, a better friction response was found on the steel tested with ZrO2. Friction coefficient and wear rate resulted in reductions up to 60% and 99% compared with those obtained with Al2O3 and Si3N4 counterparts. A strain-hardening phenomenon due to the friction process was observed on the samples tested with ZrO2 and Si3N4, which showed grain refinement and hardness increment on worn surfaces. Therefore, those systems exhibited better wear responses. In lubricated conditions, all counterparts exhibited low friction and wear, but the performance of Al2O3 and Si3N4 was highlighted. The results demonstrate that the performance of AISI 4140 annealed steel under the tested conditions is comparable with that of the same steel with other surface treatments.
Structural characterization and ionic conductivity of metastable Gd2(Ti0.65Zr0.35)2O7 powders prepared by mechanical milling Materials Research Society Symposium Proceedings, 2007
Room-temperature synthesis and electrical properties of La, Nd and Gd apatite-type silicates Materials Research Society Symposium Proceedings, 2007
Cooperative oxygen ion dynamics in Gd2Ti2-yZryO7 K. J. Moreno, G. Mendoza-Suárez, A. F. Fuentes, J. García-Barriocanal, C. León, et al. Physical Review B Condensed Matter and Materials Physics, 2005
Integrity of 316/420 Stainless Steel Tribosystem Under Severe Marine Conditions KJ Moreno, MT Hernández-Sierra, JS García-Miranda, ... Metals 15 (10), 1076 , 2025 2025 Citations: 3
Evaluation of Aromatic Organic Compounds as Additives on the Lubrication Properties of Castor Oil MT Hernández-Sierra, JE Báez, LD Aguilera-Camacho, ... Lubricants 12 (7), 244 , 2024 2024 Citations: 5
A Comparative Analysis of the Lubricating Performance of an Eco-Friendly Lubricant vs Mineral Oil in a Metallic System JS García-Miranda, LD Aguilera-Camacho, MT Hernández-Sierra, ... Coatings 13 (8), 1314 , 2023 2023 Citations: 8
Friction and wear improvement by using Curcumin as a natural additive in green lubricants MT Hernández-Sierra, JE Báez, LD Aguilera-Camacho, ... Proceedings of the Institution of Mechanical Engineers, Part J: Journal of … , 2023 2023 Citations: 10
Tribological performance of 100Cr6/8620 steel bearing system under green oil lubrication R Ortega-Álvarez, MT Hernández-Sierra, LD Aguilera-Camacho, ... Metals 12 (2), 362 , 2022 2022 Citations: 13
Sustainable xanthophylls-containing poly (ε-caprolactone) s: synthesis, characterization, and use in green lubricants E Rodríguez-deLeón, M Bah, JE Báez, MT Hernández-Sierra, KJ Moreno, ... RSC advances 12 (48), 30851-30859 , 2022 2022 Citations: 9
Critical review of the article “Effect of Low Hydroxyapatite Loading Fraction on the Mechanical and Tribological Characteristics of Poly (Methyl Methacrylate) Nanocomposites … V Campos Sanabria, KJ Moreno Bello Entreciencias: diálogos en la sociedad del conocimiento 9 (23) , 2021 2021
Terpenes versus linear alkyl substituents: Effect of the terminal groups on the oligomers derived from poly (ε-caprolactone) PD Falcón-Torres, AG Morales-Segoviano, AA Martínez-Salazar, ... Chemical Papers 75 (10), 5587-5598 , 2021 2021 Citations: 3
On the tribological and oxidation study of xanthophylls as natural additives in castor oil for green lubrication KJ Moreno, MT Hernández-Sierra, JE Báez, E Rodríguez-deLeón, ... Materials 14 (18), 5431 , 2021 2021 Citations: 15
On the influence of tribological properties of AISI 4140 annealed steel against ceramic counterparts under dry and lubricated conditions and their effect on steel microstructure LD Aguilera-Camacho, MT Hernández-Sierra, JS García-Miranda, ... Metals 11 (8), 1275 , 2021 2021 Citations: 10
Mechanical and bio-lubricated friction performance of PA6G for gear applications MT Hernández-Sierra, JE Marta, LD Aguilera-Camacho, ... MRS Advances 5 (59), 3055-3064 , 2020 2020 Citations: 3
Improvement effect of green lubricants on the tribological and mechanical performance of 4140 steel MT Hernández-Sierra, MG Bravo-Sánchez, JE Báez, ... Applied Sciences 9 (22), 4896 , 2019 2019 Citations: 27
A systematic study of macrodiols and poly (ester-urethanes) derived from α, ω-hydroxy telechelic poly (ε-caprolactone)(HOPCLOH) with different ether [CH2CH2O] m groups … JE Báez, Á Marcos-Fernández, R Navarro, C García, ... Journal of Polymer Research 26 (2), 32 , 2019 2019 Citations: 9
A systematic study of macrodiols and poly (ester-urethanes) derived from α, ω-hydroxy telechelic poly (ε-caprolactone)(HOPCLOH) with different ether [CH2CH2O] m groups … JE Báez-García, Á Marcos-Fernández, R Navarro Crespo, ... Springer Nature , 2019 2019
Effect of Poly (ε-Caprolactone) as a bio-lubricant additive in AISI 4140 Steel/Al2O3 tribosystem MT Hernández-Sierra, MG Bravo-Sánchez, LD Aguilera-Camacho, ... MRS Advances 4 (57-58), 3105-3112 , 2019 2019
Physical and rheological investigation of vegetable oils and their effect as lubricants in mechanical components R Ortega-Álvarez, GE Aguilar-Cortés, MT Hernández-Sierra, ... MRS Advances 4 (59-60), 3291-3297 , 2019 2019 Citations: 3
Influence of substrate roughness on the adhesion and tribological performance of Titanium Nitride coating on AISI H13 steel R Ortega-Álvarez, MT Hernández-Sierra, B Arroyo-Ramírez, ... MRS Advances 3 (62), 3669-3674 , 2018 2018 Citations: 3
Tribological performance of TiN and TiCN coatings on a working tool steel MT Hernández-Sierra, LD Aguilera-Camacho, A Ponce, ... Journal of Mechanical Science and Technology 32 (8), 3659-3666 , 2018 2018 Citations: 18
Thermal stability and lubrication properties of biodegradable castor oil on AISI 4140 steel MT Hernández-Sierra, LD Aguilera-Camacho, JE Báez-García, ... Metals 8 (6), 428 , 2018 2018 Citations: 26
Tribological and mechanical characterization of PMMA/HAp nanocomposites obtained by free-radical polymerization V Campos-Sanabria, MT Hernández-Sierra, MG Bravo-Sánchez, ... MRS Advances 3 (63), 3763-3768 , 2018 2018 Citations: 6
MOST CITED SCHOLAR PUBLICATIONS
Cooperative oxygen ion dynamics in KJ Moreno, G Mendoza-Suárez, AF Fuentes, J García-Barriocanal, ... Physical Review B—Condensed Matter and Materials Physics 71 (13), 132301 , 2005 2005 Citations: 77
Tailoring disorder and dimensionality: strategies for improved solid oxide fuel cell electrolytes J Garcia‐Barriocanal, A Rivera‐Calzada, M Varela, Z Sefrioui, ... ChemPhysChem 10 (7), 1003-1011 , 2009 2009 Citations: 73
Cation size effects in oxygen ion dynamics of highly disordered pyrochlore-type ionic conductors MR Díaz-Guillén, KJ Moreno, JA Díaz-Guillén, AF Fuentes, KL Ngai, ... Physical Review B—Condensed Matter and Materials Physics 78 (10), 104304 , 2008 2008 Citations: 61
On the influence of silver nanoparticles size in the electrical conductivity of PEDOT: PSS RG Melendez, KJ Moreno, I Moggio, E Arias, A Ponce, I Llanera, SE Moya Materials Science Forum 644, 85-90 , 2010 2010 Citations: 58
Influence of thermally induced oxygen order on mobile ion dynamics in KJ Moreno, AF Fuentes, M Maczka, J Hanuza, U Amador, J Santamaría, ... Physical Review B—Condensed Matter and Materials Physics 75 (18), 184303 , 2007 2007 Citations: 54
Room-temperature synthesis and conductivity of the pyrochlore type Dy2 (Ti1− yZry) 2O7 (0⩽ y⩽ 1) solid solution KJ Moreno, MA Guevara-Liceaga, AF Fuentes, J García-Barriocanal, ... Journal of Solid State Chemistry 179 (3), 928-934 , 2006 2006 Citations: 54
Mechanochemical synthesis and ionic conductivity in the Gd2 (Sn1–yZry) 2O7 (0⩽ y⩽ 1) solid solution KJ Moreno, AF Fuentes, J Garcia-Barriocanal, C León, J Santamaria Journal of Solid State Chemistry 179 (1), 323-330 , 2006 2006 Citations: 49
Structural manipulation of pyrochlores: Thermal evolution of metastable Gd2 (Ti1− yZry) 2O7 powders prepared by mechanical milling KJ Moreno, AF Fuentes, M Maczka, J Hanuza, U Amador Journal of Solid State Chemistry 179 (12), 3805-3813 , 2006 2006 Citations: 48
Friction and wear properties of poly (methyl methacrylate)–hydroxyapatite hybrid coating on UHMWPE substrates CH Navarro, KJ Moreno, A Chávez-Valdez, F Louvier-Hernández, ... Wear 282, 76-80 , 2012 2012 Citations: 42
Silver nanoparticles functionalized in situ with the conjugated polymer (PEDOT: PSS) KJ Moreno, I Moggio, E Arias, I Llarena, SE Moya, RF Ziolo, H Barrientos Journal of nanoscience and nanotechnology 9 (6), 3987-3992 , 2009 2009 Citations: 41
Improvement effects of CaO nanoparticles on tribological and microhardness properties of PMMA coating LD Aguilera-Camacho, C Hernández-Navarro, KJ Moreno, ... Journal of Coatings Technology and Research 12 (2), 347-355 , 2015 2015 Citations: 37
Direct synthesis of A2 (Ti (1− y) Zry) 2O7 (A= Gd3+, Y3+) solid solutions by ball milling constituent oxides KJ Moreno, RS Rodrigo, AF Fuentes Journal of alloys and compounds 390 (1-2), 230-235 , 2005 2005 Citations: 35
Microstructural Characterization and Wear Properties of Fe‐Based Amorphous‐Crystalline Coating Deposited by Twin Wire Arc Spraying A Arizmendi-Morquecho, A Campa-Castilla, C Leyva-Porras, ... Advances in materials science and engineering 2014 (1), 836739 , 2014 2014 Citations: 31
Preparation and performance evaluation of PMMA/HA nanocomposite as bulk material KJ Moreno, JS García-Miranda, C Hernández-Navarro, F Ruiz-Guillén, ... Journal of Composite Materials 49 (11), 1345-1353 , 2015 2015 Citations: 29
Ionic conductivity of apatite-type rare-earth silicates prepared by mechanical milling LG Martínez-González, E Rodríguez-Reyna, KJ Moreno, ... Journal of alloys and compounds 476 (1-2), 710-714 , 2009 2009 Citations: 29
Improvement effect of green lubricants on the tribological and mechanical performance of 4140 steel MT Hernández-Sierra, MG Bravo-Sánchez, JE Báez, ... Applied Sciences 9 (22), 4896 , 2019 2019 Citations: 27
Preparation and tribological properties of chitosan/hydroxyapatite composite coatings applied on ultra high molecular weight polyethylene substrate CH Navarro, KJ Moreno, A Arizmendi-Morquecho, A Chavez-Valdez, ... Journal of Plastic Film & Sheeting 28 (4), 279-297 , 2012 2012 Citations: 27
Thermal stability and lubrication properties of biodegradable castor oil on AISI 4140 steel MT Hernández-Sierra, LD Aguilera-Camacho, JE Báez-García, ... Metals 8 (6), 428 , 2018 2018 Citations: 26
Poly (methyl methacrylate)/carbonated hydroxyapatite composite applied as coating on ultra high molecular weight polyethylene V Morales-Nieto, CH Navarro, KJ Moreno, A Arizmendi-Morquecho, ... Progress in Organic Coatings 76 (1), 204-208 , 2013 2013 Citations: 23
Oxygen ion dynamics in pyrochlore-type ionic conductors: effects of structure and ion–ion cooperativity MA Frechero, OJ Durá, MR Díaz-Guillén, KJ Moreno, JA Díaz-Guillén, ... Journal of Non-Crystalline Solids 407, 349-354 , 2015 2015 Citations: 20