Karolina Dudek

Institute of Ceramics and Building Materials

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Mateusz Dulski

University of Silesia in Katowice

Tomasz Goryczka

University of Silesia in Katowice

Jacek Podwórny

Institute of Ceramics and Building Materials

BŁ

Bożena Łosiewicz

University of Silesia in Katowice

Anna Nowak

University of Silesia in Katowice

Anna Mrozek‐Wilczkiewicz

University of Silesia in Katowice

Jerzy Kubacki

University of Silesia in Katowice

Sławomir Sułowicz

University of Silesia in Katowice

Patrycja Rawicka

University of Silesia in Katowice

Krzysztof Matus

Silesian University of Technology

Cooperative Institutions

University of Silesia in Katowice

Silesian University of Technology

Institute of Physics

Silesian Center for Heart Disease

AGH University of Krakow

Institute of Ceramics and Building Materials

Czech Academy of Sciences, Institute of Physics

Katowice School of Technology

Łukasiewicz Research Network

Polish Academy of Sciences

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Functionalization of the Implant Surface Made of NiTi Shape Memory Alloy

Materials (2023)

Karolina Dudek Tomasz Goryczka Mateusz Dulski Bronisław Psiuk Agnieszka Szurko

To functionalize and improve the biocompatibility of the surface of a medical implant made of NiTi shape memory alloy and used in practice, a clamp, multifunctional layers composed of amorphous TiO2 interlayer, and a hydroxyapatite coating were produced. Electrophoresis, as an efficient method of surface modification, resulted in the formation of a uniform coating under a voltage of 60 V and deposition time of 30 s over the entire volume of the implant. The applied heat treatment (800 °C/2 h) let toa dense, crack-free, well-adhered HAp coating with a thickness of ca. 1.5 μm. and a high crack resistance to deformation associated with the induction of the shape memory effect in the in the deformation range similar to the real implant work after implantation. Moreover, the obtained coating featured a hydrophilic (CA = 59.4 ± 0.3°) and high biocompatibility.

Nickel titanium

Biocompatibility

Surface Modification

Titanium alloy

10.3390/ma16041609

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Citations (7)

Synthesis and Characterization of Silica-Titanium Oxide Nano-Coating on NiTi Alloy

Coatings (2024)

Karolina Dudek Mateusz Dulski Jacek Podwórny Magdalena Kujawa Anna Gerle

To functionalize the surface of the NiTi alloy, hybrid layers comprising nanometric silica and titanium oxides were synthesized. The TiO2–SiO2 nanosystem was chemically prepared and utilized for electrophoretic deposition (EPD) to create multifunctional layers on the alloy surface. The impact of pH on Zeta potential and ceramic particle size was explored to ensure a stable colloidal suspension for EPD, with optimal parameters established at a pH of approximately 6. A uniform layer was formed by applying a voltage of 40 V for 3 min, appearing as a thin film interspersed with regularly spaced larger agglomerates. The thin film primarily consisted of a minor fraction of defective rutile nanoparticles, accompanied by silica and carbon agglomerates from the nanosystem synthesis process. Heat treatment at 800 °C for 2 h induced significant structural changes, developing a novel-generation material with a different structure. An interlayer with strong Si–O–Ti connections was formed. Moreover, the mechanism of layer formation was extensively discussed.

Nickel titanium

Characterization

Titanium alloy

Titanium oxide

10.3390/coatings14040391

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Citations (2)

Structure Of TiN/Hydroxyapatite Multilayers Deposited On Surface Of NiTi Shape Memory Alloy

Archives of Metallurgy and Materials (2015)

Karolina Dudek Tomasz Goryczka T. Wierzchoń J. Lelątko

Abstract In order to improve a corrosion resistance and biocompatibility of NiTi shape memory alloys, the surface of the NiTi alloy was covered by protective layers. The paper presents results of the layers composed of titanium nitride and hydroxyapatite (HAp). The TiN layers were deposited using the glow discharge technique and then the bioactive hydroxyapatite layer was formed from simulated body fluids solution. The results of the structure studies and microscopic observations confirmed that on the surface of the NiTi alloy a thin titanium nitride layer 35-50 nm thick (depending on the glow discharge technique parameters) was obtained. The structure of the deposited layers was studied by means of the X-ray diffraction technique. Also, mechanical parameters of obtained layers were characterized using nanoindentation. On the top of the titanium nitride, a layer consisted of hydroxyapatite and NaCl was formed. Applied parameters of deposition process did not lead to decomposition of the NiTi parent phase (B2) to the equilibrium ones.

Nickel titanium

Biocompatibility

Titanium alloy

Nanocrystalline material

10.1515/amm-2015-0304

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Citations (1)

Application of hard coal combustion residuals in the production of ceramic building materials

Construction and Building Materials (2021)

Robert Kusiorowski Anna Gerle Karolina Dudek K. Związek

The combustion of solid fuels results in solid by-products, i.e. slags and ashes. This waste is a potential source of many valuable mineral materials that should be used to the maximum extent. The amount of solid waste generated in combustion processes depends on the quality of coal and its natural ash content. In addition, the amount of waste is increased by a portion of unburnt coal depending on the furnace efficiency. The paper presents the results of research on the application of combustion waste as an additive to the ceramic mass used in the production of ceramic clinker products. Two furnace slags differing in origin were used in the investigations. Their physicochemical characteristics and the effect of this waste on the properties of clinker ceramics were determined. The required test specimens were formed from plastic ceramic masses containing wt. 30% of the waste. After firing at temperatures ranging from 1100 to 1200 °C, the linear shrinkage, water absorption, open porosity, apparent density and compressive strength of the obtained materials were determined. The results of the conducted research indicate that combustion waste can be considered as a valuable secondary raw material for the production of ceramic clinker products, because it intensifies the sintering process of clinker ceramics.

Shrinkage

Slag (welding)

10.1016/j.conbuildmat.2021.124506

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Citations (10)

Electrochemical Formation of Self-Organized Nanotubular Oxide Layers on Ti13Zr13Nb Alloy for Biomedical Applications

Acta Physica Polonica A (2014)

Agnieszka Smołka K. Rodak Grzegorz Dercz Karolina Dudek Bożena Łosiewicz

In this work, the anodic formation of self-organized nanotubular oxide layers on Ti13Zr13Nb implant alloy was presented.Anodic oxidation was carried out at room temperature in [1 M] (NH4)2SO4 solution with 1 wt% content of NH4F.The voltage and time of anodization was 20 V for 120 min, respectively.Under proposed conditions, the best arrangement of nanopores was observed.The physical and chemical properties of the anodized surface of the Ti13Zr13Nb alloy were characterized using grazing incidence X-ray diraction, scanning transmission electron microscopy, and atomic force microscopy.It was found that diameter of nanopores varied from 10 to 32 nm.Mechanism of the fabrication of the unique 3D tube-shaped nanostructure of TiO2 on the surface of the Ti13Zr13Nb alloy by electrochemical anodization, has been discussed.

10.12693/aphyspola.125.932

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Citations (18)

Multifaceted Assessment of Porous Silica Nanocomposites: Unraveling Physical, Structural, and Biological Transformations Induced by Microwave Field Modification

Nanomaterials (2024)

Aleksandra Strach Mateusz Dulski Daniel Wasilkowski Krzysztof Matus Karolina Dudek

In response to the persistent challenge of heavy and noble metal environmental contamination, our research explores a new idea to capture silver through porous spherical silica nanostructures. The aim was realized using microwave radiation at varying power (P = 150 or 800 W) and exposure times (t = 60 or 150 s). It led to the development of a silica surface with enhanced metal-capture capacity. The microwave-assisted silica surface modification influences the notable changes within the carrier but also enforces the crystallization process of silver nanoparticles with different morphology, structure, and chemical composition. Microwave treatment can also stimulate the formation of core–shell bioactive Ag/Ag2CO3 heterojunctions. Due to the silver nanoparticles’ sphericity and silver carbonate’s presence, the modified nanocomposites exhibited heightened toxicity against common microorganisms, such as E. coli and S. epidermidis. Toxicological assessments, including minimum inhibitory concentration (MIC) and half-maximal inhibitory concentration (IC50) determinations, underscored the efficacy of the nanocomposites. This research represents a significant stride in addressing pollution challenges. It shows the potential of microwave-modified silicas in the fight against environmental contamination. Microwave engineering underscores a sophisticated approach to pollution remediation and emphasizes the pivotal role of nanotechnology in shaping sustainable solutions for environmental stewardship.

Environmental Pollution

Silver nanoparticle

Surface Modification

Nanomaterials

10.3390/nano14040337

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Citations (0)

Electrophoretic deposition and characterization of thin hydroxyapatite coatings formed on the surface of NiTi shape memory alloy

Ceramics International (2016)

Karolina Dudek Tomasz Goryczka

Electrophoretic Deposition

Nickel titanium

Characterization

Deposition

10.1016/j.ceramint.2016.09.074

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Citations (43)

Toward the Development of an Innovative Implant: NiTi Alloy Functionalized by Multifunctional β-TCP+Ag/SiO₂ Coatings

ACS Applied Bio Materials (2019)

Mateusz Dulski Karolina Dudek Damian Chalon Jerzy Kubacki Sławomir Sułowicz

In recent years, one of the more important and costly problems of modern medicine is the need to replace or supplement organs in order to improve the quality of human life. In this field, promising solutions seem to have been implants which are based on NiTi alloys with shape memory effects. Unfortunately, this material is susceptible to the corrosion and release of toxic nickel to the human organism. Hence, its application as a long-term material is strongly limited. Therefore, this paper presents a new solution which should help to improve the functionality of the NiTi alloy and elongate its medical stability to use. The idea was focused on functionalization of the implant surface by a biocompatible, multifunctional coating without any impact on the features of the substrate, i.e., the martensitic transformation responsible for shape memory effects. For this purpose, we prepared a colloidal suspension, composed of β-TCP (particle size ∼450 nm) and the Ag/SiO2 nanocomposite which due to the electrophoretic deposition (EPD) led to the formation of structurally atypical calcium phosphosilicate coating. Those biomaterials formed a crack-free coating, adhering well to the NiTi surface when distributed over the entire surface, with low concentration of metallic and oxide silver (<3 at. %). At the same time, the coat-forming materials had resulted in the growth of a Gram-negative bacterial biofilm. Additionally, the additive of the silver-silica composite enhances cell proliferation, effectively a few times higher than commonly used coat-forming materials (e.g., pure β-TCP).

Nickel titanium

Electrophoretic Deposition

Surface Modification

10.1021/acsabm.8b00510

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Citations (14)

Electrophoretic deposition of biphasic calcium phosphates on NiTi shape memory alloy

Composites Theory and Practice (2015)

Karolina Dudek Tomasz Goryczka

Nickel titanium

Deposition

Electrophoretic Deposition

Source

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Citations (1)

NiTi Shape Memory Clamps with Modified Surface for Bone Fracture Treatment

Materials (2023)

Tomasz Goryczka Tomasz Szponder Karolina Dudek T. Wierzchoń Jarosław Paluch

Using NiTi alloys with shape memory for long-term medical implants requires modification of their surface due to the possible occurrence of corrosion. Hence, the surface of the staples used to join fractured bone within the craniofacial region was modified by applying a titanium oxy-nitrogen layer and a hydroxyapatite coating. Surface-modified clamps were tested in vivo using New Zealand white rabbits. After determining the mechanical characteristics of the bone and considering the initial state and surface modification, the diameter of the wire (used to make the clamps with the appropriate compression force) was selected. Implantation was performed on two groups of rabbits: experimental and control. In the experimental group, an intentionally induced bone fracture was treated in one tibia. On the second tibia, two additional clamps were applied to increase the possibility of a negative impact of the NiTi alloy on a living organism. After 6 weeks of application, a proper joining of the broken bone fragments was stated. Whereas after twelve weeks, no negative impact of the clamp material on a living organism, i.e., a rabbit, was found. Hence, the clamp with the modified surface can connect bone fragments in humans as well as small and medium-sized animals, with an extended range of use up to 12 weeks.

Nickel titanium

Clamp

Titanium alloy

Bone fracture

10.3390/ma16165575

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Citations (4)