document

Laying the experimental foundation for corrosion inhibitor discovery through machine learning

Özkan, C. (author), Sahlmann, Lisa (author), Feiler, Christian (author), Zheludkevich, Mikhail (author), Lamaka, Sviatlana (author), Sewlikar, Parth (author), Kooijman, A.M. (author), Taheri, P. (author), Mol, J.M.C. (author)

Creating durable, eco-friendly coatings for long-term corrosion protection requires innovative strategies to streamline design and development processes, conserve resources, and decrease maintenance costs. In this pursuit, machine learning emerges as a promising catalyst, despite the challenges presented by the scarcity of high-quality...

journal article 2024

document

Extrusion-based 3D printing of biodegradable, osteogenic, paramagnetic, and porous FeMn-akermanite bone substitutes

Putra, N.E. (author), Leeflang, M.A. (author), Klimopoulou, M. (author), Dong, J. (author), Taheri, P. (author), Huan, Z. (author), Fratila-Apachitei, E.L. (author), Mol, J.M.C. (author), Chang, J. (author), Zhou, J. (author), Zadpoor, A.A. (author)

The development of biodegradable Fe-based bone implants has rapidly progressed in recent years. Most of the challenges encountered in developing such implants have been tackled individually or in combination using additive manufacturing technologies. Yet not all the challenges have been overcome. Herein, we present porous FeMn-akermanite...

journal article 2023

document

Biodegradation of Oxide Nanoparticles in Apoferritin Protein Media: A Systematic Electrochemical Approach

Rahimi, E. (author), Kim, Donghoon (author), Offoiach, Ruben (author), Sanchis-Gual, Roger (author), Chen, Xiang Zhong (author), Taheri, P. (author), Gonzalez Garcia, Y. (author), Mol, J.M.C. (author), Fedrizzi, Lorenzo (author), Pané, Salvador (author), Lekka, Maria (author)

Functional oxide nanoparticles are extensively utilized in the last decades for biomedical purposes due to their unique functional properties. Nevertheless, their biodegradation mechanism by biological species, particularly by proteins at oxide/protein interfaces, still remains limited. Here, a systematic approaches is provided to investigate...

journal article 2023

document

Vacuum Deposited Perovskites with a Controllable Crystal Orientation

Yan, J. (author), Stickel, L.S. (author), van den Hengel, L. (author), Wang, H. (author), Ravi Anusuyadevi, P. (author), Kooijman, A.M. (author), Liu, X. (author), Ibrahim, B. (author), Mol, J.M.C. (author), Taheri, P. (author), Mazzarella, L. (author), Isabella, O. (author), Savenije, T.J. (author)

The preferential orientation of the perovskite (PVK) is typically accomplished by manipulation of the mixed cation/halide composition of the solution used for wet processing. However, for PVKs grown by thermal evaporation, this has been rarely addressed. It is unclear how variation in crystal orientation affects the optoelectronic properties of...

journal article 2023

document

Extrusion-based additive manufacturing of Mg-Zn alloy scaffolds

Dong, J. (author), Tümer, N. (author), Leeflang, M.A. (author), Taheri, P. (author), Fratila-Apachitei, E.L. (author), Mol, J.M.C. (author), Zadpoor, A.A. (author), Zhou, J. (author)

Porous biodegradable Mg and its alloys are considered to have a great potential to serve as ideal bone substitutes. The recent progress in additive manufacturing (AM) has prompted its application to fabricate Mg scaffolds with geometrically ordered porous structures. Extrusion-based AM, followed by debinding and sintering, has been recently...

journal article 2022

document

Poly(2-ethyl-2-oxazoline) coating of additively manufactured biodegradable porous iron

Putra, N.E. (author), Tigrine, A. (author), Aksakal, S. (author), de la Rosa, V. R. (author), Taheri, P. (author), Fratila-Apachitei, E.L. (author), Mol, J.M.C. (author), Zhou, J. (author), Zadpoor, A.A. (author)

Additively manufacturing of porous iron offers a unique opportunity to increase its biodegradation rate by taking advantage of arbitrarily complex porous structures. Nevertheless, achieving the required biodegradation profile remains challenging due to the natural passivation of iron that decrease the biodegradation rate. Moreover, the...

journal article 2022

document

Additive manufacturing of bioactive and biodegradable porous iron-akermanite composites for bone regeneration

Putra, N.E. (author), Borg, K. G.N. (author), Diaz Payno, P.J. (author), Leeflang, M.A. (author), Klimopoulou, M. (author), Taheri, P. (author), Mol, J.M.C. (author), Fratila-Apachitei, E.L. (author), Zhou, J. (author), Zadpoor, A.A. (author)

Advanced additive manufacturing techniques have been recently used to tackle the two fundamental challenges of biodegradable Fe-based bone-substituting materials, namely low rate of biodegradation and insufficient bioactivity. While additively manufactured porous iron has been somewhat successful in addressing the first challenge, the limited...

journal article 2022

document

Study of Mercaptobenzimidazoles As Inhibitors for Copper Corrosion: Down to the Molecular Scale

Neupane, Shova (author), Losada-Pérez, Patricia (author), Tiringer, U. (author), Taheri, P. (author), Desta, Derese (author), Xie, Chenyang (author), Crespo, Daniel (author), Mol, J.M.C. (author), Milošev, Ingrid (author), Kokalj, Anton (author), Renner, Frank Uwe (author)

The initiation of corrosion can be triggered by defects in the adsorbed layer of organic inhibitors. A detailed knowledge of the intermolecular forces between the inhibitor molecules and the interfacial bonding will be decisive to unravel the mechanisms driving the corrosion initiation. In this work, adsorbed organic layers of 2-mercapto-5...

journal article 2021

document

Extrusion-based 3D printed biodegradable porous iron

Putra, N.E. (author), Leeflang, M.A. (author), Minneboo, M.B. (author), Taheri, P. (author), Fratila-Apachitei, E.L. (author), Mol, J.M.C. (author), Zhou, J. (author), Zadpoor, A.A. (author)

Extrusion-based 3D printing followed by debinding and sintering is a powerful approach that allows for the fabrication of porous scaffolds from materials (or material combinations) that are otherwise very challenging to process using other additive manufacturing techniques. Iron is one of the materials that have been recently shown to be...

journal article 2021

document

Simplistic correlations between molecular electronic properties and inhibition efficiencies: Do they really exist?

Kokalj, Anton (author), Lozinšek, Matic (author), Kapun, Barbara (author), Taheri, P. (author), Neupane, Shova (author), Losada-Pérez, Patricia (author), Xie, Chenyang (author), Stavber, Stojan (author), Crespo, Daniel (author), Renner, Frank U. (author), Mol, J.M.C. (author), Milošev, Ingrid (author)

The often used simplistic correlations between molecular electronic parameters and experimentally determined corrosion inhibition efficiencies are critically evaluated for a set of 24 heterocyclic organic compounds, tested as corrosion inhibitors for copper in 3 wt.% NaCl aqueous solution. Twelve different molecular electronic descriptors...

journal article 2021

document

Nanoscopic and in-situ cross-sectional observations of Li-based conversion coating formation using liquid-phase TEM

Kosari, A. (author), Tichelaar, F.D. (author), Visser, P. (author), Taheri, P. (author), Zandbergen, H.W. (author), Terryn, H.A. (author), Mol, J.M.C. (author)

Lithium salts have been proposed as promising environmentally friendly alternatives to carcinogenic hexavalent chromium-based inhibitors for the corrosion protection of aerospace aluminium alloys (AAs). Incorporated into organic coatings, lithium salts are released at damaged locations to establish a conversion layer in which distinct...

journal article 2021

document

Extrusion-based 3D printing of ex situ-alloyed highly biodegradable MRI-friendly porous iron-manganese scaffolds

Putra, N.E. (author), Leeflang, M.A. (author), Taheri, P. (author), Fratila-Apachitei, E.L. (author), Mol, J.M.C. (author), Zhou, J. (author), Zadpoor, A.A. (author)

Additively manufactured biodegradable porous iron has been only very recently demonstrated. Two major limitations of such a biomaterial are very low biodegradability and incompatibility with magnetic resonance imaging (MRI). Here, we present a novel biomaterial that resolves both of those limitations. We used extrusion-based 3D printing to...

journal article 2021

document

Extrusion-based 3D printed magnesium scaffolds with multifunctional MgF₂and MgF₂-CaP coatings

Dong, J. (author), Tümer, N. (author), Putra, N.E. (author), Zhu, Jia-Ning (author), Li, Y. (author), Leeflang, M.A. (author), Taheri, P. (author), Fratila-Apachitei, E.L. (author), Mol, J.M.C. (author), Zadpoor, A.A. (author), Zhou, J. (author)

Additively manufactured (AM) biodegradable magnesium (Mg) scaffolds with precisely controlled and fully interconnected porous structures offer unprecedented potential as temporary bone substitutes and for bone regeneration in critical-sized bone defects. However, current attempts to apply AM techniques, mainly powder bed fusion AM, for the...

journal article 2021

document

On the importance of time-resolved electrochemical evaluation in corrosion inhibitor-screening studies

Taheri, P. (author), Milošev, Ingrid (author), Meeusen, M. (author), Kapun, Barbara (author), White, Paul (author), Kokalj, Anton (author), Mol, J.M.C. (author)

Efficiency of corrosion inhibitors in aqueous solutions depends on several interfacial parameters, which may vary over time. Therefore, reliable electrochemical techniques are demanded for screening the efficiency of corrosion inhibitors and monitoring their performance over time. Here, we evaluate corrosion inhibition efficiency of imidazole...

journal article 2020

document

Additively manufactured biodegradable porous zinc

Li, Y. (author), Pavanram, P. (author), Zhou, J. (author), Lietaert, K. (author), Taheri, P. (author), Li, W. (author), San, H. (author), Leeflang, M.A. (author), Mol, J.M.C. (author), Jahr, H. (author), Zadpoor, A.A. (author)

Additively manufacturing (AM) opens up the possibility for biodegradable metals to possess uniquely combined characteristics that are desired for bone substitution, including bone-mimicking mechanical properties, topologically ordered porous structure, pore interconnectivity and biodegradability. Zinc is considered to be one of the promising...

journal article 2020

document

In-situ nanoscopic observations of dealloying-driven local corrosion from surface initiation to in-depth propagation

Kosari, A. (author), Zandbergen, H.W. (author), Tichelaar, F.D. (author), Visser, P. (author), Taheri, P. (author), Terryn, H.A. (author), Mol, J.M.C. (author)

Dealloying is involved in materials science responsible for fabrication of nanoscale structures beneficially but for corrosion degradations detrimentally. Detailed understanding related to the latter is critical for designing corrosion-resistance alloys and dedicated inhibition systems. Thus, direct nanoscopic observations of nano-structural...

journal article 2020

document

Mechanical and Corrosion Protection Properties of a Smart Composite Epoxy Coating with Dual-Encapsulated Epoxy/Polyamine in Carbon Nanospheres

Haddadi, S. (author), Ramazani, A. S.A. (author), Mahdavian, M. (author), Taheri, P. (author), Mol, J.M.C. (author)

Carbon nanocapsules doped separately with epoxy and polyamine were used to fabricate an epoxy nanocomposite coating. Carbon nanospheres with dual-encapsulated epoxy/polyamine were dispersed uniformly in the epoxy resin at concentrations of 2, 5, and 10 wt %. The mechanical properties of the nanocomposites were studied by tensile testing and...

journal article 2019

document

Self-healing epoxy nanocomposite coatings based on dual-encapsulation of nano-carbon hollow spheres with film-forming resin and curing agent

Haddadi, S. (author), Ramazani, A. (author), Mahdavian, M. (author), Taheri, P. (author), Mol, J.M.C. (author), Gonzalez Garcia, Y. (author)

The ability of an active protective organic coating to restore its protection functionality in case of a coating defect is of pivotal importance to ensure durable performance under demanding corrosive conditions. In this paper, a self-healing epoxy system is fabricated by separate encapsulation of epoxy and polyamine in carbon hollow spheres ...

journal article 2019

document

Enhanced corrosion protection of mild steel by the synergetic effect of zinc aluminum polyphosphate and 2-mercaptobenzimidazole inhibitors incorporated in epoxy-polyamide coatings

Mirzakhanzadeh, Z. (author), Kosari, A. (author), Moayed, M. H. (author), Naderi, R. (author), Taheri, P. (author), Mol, J.M.C. (author)

This work investigates the synergetic effect of zinc aluminum polyphosphate (ZAPP) and 2-mercaptobenzimidazole (MBI) on the corrosion protection of mild steel coated with a solvent-borne epoxy-polyamide layer. The magnitude and trend of electrochemical impedance spectroscopy data over 70-d immersion in 3.5 wt.% NaCl solution indicate superior...

journal article 2018

document

Fabrication and characterization of graphene-based carbon hollow spheres for encapsulation of organic corrosion inhibitors

Haddadi, S. (author), Ramazani, S. A.A. (author), Mahdavian, M. (author), Taheri, P. (author), Mol, J.M.C. (author)

In this work, we synthesized carbon hollow spheres (CHSs) using the silica templating method, encapsulated 2-mercaptobenzimidazole (MBI) inhibitor in the CHSs and evaluated their corrosion inhibition performance upon exposure of mild steel to a saline solution containing the released inhibitor. The effects of silica template surface...

journal article 2018