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Magnetic Properties of Nickel-Titanium Alloy during Martensitic Transformations under Plastic and Elastic Deformation. Symmetry (Basel) 2021. [DOI: 10.3390/sym13040665] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This paper focuses on the processes of the occurrence of magnetization during structure formation in samples of Ni51Ti49 alloy under deformation conditions. The possibility of the existence of a phase with an FCC (face-centered cubic) lattice in titanium nickelide has been demonstrated by electron microscopy and electron diffraction. It has been discovered that the interplanar distances of BCC110 (body-centered cubic), FCC111, and HCP002 (hexagonal close packed) in the alloy under study have similar values, which indicates the possibility of their mutual polymorphic transformation. Based on the modular self-organization, a scheme of martensitic transformations in titanium nickelide from the B2 structure (BCC lattice) to the B19’ structure (HCP lattice) through an intermediate phase with an FCC lattice is proposed. It is shown that lenticular crystals appear in the Ni51Ti49 alloy under tensile deformation until rupture, which is accompanied by the onset of ferromagnetism. The effect of magnetization in Ni51Ti49 samples when immersed in liquid nitrogen has been also discovered. In this case, the reason for the appearance and disappearance of magnetization can be associated with microdeformation processes caused by direct and reverse martensitic transitions that occur during cooling and heating of the samples.
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Pogrebnjak AD, Kong CH, Webster RF, Tilley RD, Takeda Y, Oyoshi K, Bondar OV, Buranich VV, Konstantinov SV, Baimoldanova LS, Opielak M, Zukowski P, Konarski P. Antibacterial Effect of Au Implantation in Ductile Nanocomposite Multilayer (TiAlSiY)N/CrN Coatings. ACS APPLIED MATERIALS & INTERFACES 2019; 11:48540-48550. [PMID: 31647641 DOI: 10.1021/acsami.9b16328] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A multilayered nanocomposite designed for biomedical applications based on (TiAlSiY)N/CrN coating implanted by heavy Au- ions is studied. Ion irradiation produced formation in the upper-surface of local amorphous clusters. The obtained composite system was characterized by SEM-EDS, RBS, SIMS, HRTEM, STEM, and nanoindentation mechanical tests, inspecting microstructure, phase state, elemental composition and surface defectiveness. The range of ion impact with correlation to TRIM simulations amounted to 23.5 nm with visible dislocations and interstitial loops indicating the nanopores' creation up/lengthways to the interface boundary. Mechanical parameters remain stable with a slight decrease (less than 2%) in hardness along with an increase in ductility. The antibacterial effect was evaluated in vitro by agar-diffusion and time-kill (72 h) assessments to define both cell-killing mechanisms: dry surface-contact and cytotoxic golden ions-release into moist environment. The identified antibacterial activity within implantation was 2-2.5 times higher due to inhibition zone diameter and antibacterial rate increase. The Au- implanted composite exhibits excellent defense against Gram-negative and Gram-positive bacteria without appreciable surface contamination. Possible biophysical and chemical mechanisms of microorganisms' disruption and annihilation were proposed and analyzed. The present study shows that produced composite has large potential for use in biomedical areas.
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Affiliation(s)
- Alexander D Pogrebnjak
- Sumy State University , 2, Rimsky Korsakov Str. , 40007 Sumy , Ukraine
- East Kazakhstan State Technical University , 69 A.K. Protozanov Street , 070004 Ust-Kamenogorsk City , The Republic of Kazakhstan
| | - Chun-Hua Kong
- Mark Wainwright Analytical Centre , University of New South Wales , Sydney , NSW 2052 , Australia
| | - Richard F Webster
- Mark Wainwright Analytical Centre , University of New South Wales , Sydney , NSW 2052 , Australia
| | - Richard D Tilley
- Mark Wainwright Analytical Centre , University of New South Wales , Sydney , NSW 2052 , Australia
| | - Yoshihiko Takeda
- National Institute for Material Science (NIMS) , 3-13 Sakura , Ibaraki prefecture 305-0003 , Japan
| | - Keiji Oyoshi
- National Institute for Material Science (NIMS) , 3-13 Sakura , Ibaraki prefecture 305-0003 , Japan
| | | | | | - Stanislav V Konstantinov
- Sevchenko Research Institute of Applied Physical Problems , Belarussian State University , Minsk 220045 , Belarus
| | - Lazat S Baimoldanova
- East Kazakhstan State Technical University , 69 A.K. Protozanov Street , 070004 Ust-Kamenogorsk City , The Republic of Kazakhstan
| | - Marek Opielak
- Politechnika Lubelska , ul. Nadbystrzycka 38 D , 20-618 Lublin , Poland
| | - Pawel Zukowski
- Politechnika Lubelska , ul. Nadbystrzycka 38 D , 20-618 Lublin , Poland
| | - Piotr Konarski
- Tele and Radio Research Institute , 11, Ratuszowa st. , 03-450 Warsaw , Poland
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Eliaz N. Corrosion of Metallic Biomaterials: A Review. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E407. [PMID: 30696087 PMCID: PMC6384782 DOI: 10.3390/ma12030407] [Citation(s) in RCA: 235] [Impact Index Per Article: 47.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 01/25/2019] [Accepted: 01/26/2019] [Indexed: 12/15/2022]
Abstract
Metallic biomaterials are used in medical devices in humans more than any other family of materials. The corrosion resistance of an implant material affects its functionality and durability and is a prime factor governing biocompatibility. The fundamental paradigm of metallic biomaterials, except biodegradable metals, has been "the more corrosion resistant, the more biocompatible." The body environment is harsh and raises several challenges with respect to corrosion control. In this invited review paper, the body environment is analysed in detail and the possible effects of the corrosion of different biomaterials on biocompatibility are discussed. Then, the kinetics of corrosion, passivity, its breakdown and regeneration in vivo are conferred. Next, the mostly used metallic biomaterials and their corrosion performance are reviewed. These biomaterials include stainless steels, cobalt-chromium alloys, titanium and its alloys, Nitinol shape memory alloy, dental amalgams, gold, metallic glasses and biodegradable metals. Then, the principles of implant failure, retrieval and failure analysis are highlighted, followed by description of the most common corrosion processes in vivo. Finally, approaches to control the corrosion of metallic biomaterials are highlighted.
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Affiliation(s)
- Noam Eliaz
- Department of Materials Science and Engineering, Tel-Aviv University, Ramat Aviv 6997801, Israel.
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Lyashenko IA, Borysiuk VN, Popov VL. Stick-slip boundary friction mode as a second-order phase transition with an inhomogeneous distribution of elastic stress in the contact area. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2017; 8:1889-1896. [PMID: 29046836 PMCID: PMC5629396 DOI: 10.3762/bjnano.8.189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Accepted: 08/16/2017] [Indexed: 06/02/2023]
Abstract
This article presents an investigation of the dynamical contact between two atomically flat surfaces separated by an ultrathin lubricant film. Using a thermodynamic approach we describe the second-order phase transition between two structural states of the lubricant which leads to the stick-slip mode of boundary friction. An analytical description and numerical simulation with radial distributions of the order parameter, stress and strain were performed to investigate the spatial inhomogeneity. It is shown that in the case when the driving device is connected to the upper part of the friction block through an elastic spring, the frequency of the melting/solidification phase transitions increases with time.
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Affiliation(s)
- Iakov A Lyashenko
- Technische Universität Berlin, 10623 Berlin, Germany
- Sumy State University, 40007 Sumy, Ukraine
| | - Vadym N Borysiuk
- Technische Universität Berlin, 10623 Berlin, Germany
- Sumy State University, 40007 Sumy, Ukraine
| | - Valentin L Popov
- Technische Universität Berlin, 10623 Berlin, Germany
- National Research Tomsk State University, 634050 Tomsk, Russia
- National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
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Lyashenko IA, Filippov AE, Popov M, Popov VL. Effect of stress nonhomogeneity on the shear melting of a thin boundary lubrication layer. Phys Rev E 2016; 94:053002. [PMID: 27967082 DOI: 10.1103/physreve.94.053002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Indexed: 11/07/2022]
Abstract
We consider the dynamical properties of boundary lubrication in contact between two atomically smooth solid surfaces separated by an ultrathin layer of lubricant. In contrast to previous works on this topic, we explicitly consider the heterogeneity of tangential stresses, which arises in a contact of elastic bodies that are moved tangentially relative to each other. To describe phase transitions between structural states of the lubricant we use an approach based on the field theory of phase transitions. It is assumed that the lubricant layer, when stressed, can undergo a shear-melting transition of first or second order. While solutions for the homogeneous system can be easily obtained analytically, the kinetics of the phase transitions in the spatially heterogeneous system can only be studied numerically. In our numerical experiments melting of the lubricant layer starts from the outer boundary of contact and propagates to its center. The melting wave is followed by a wave of solidification. This process repeats itself periodically, following the stick-slip pattern that is characteristic of such systems. Depending on the thermodynamic and kinetic parameters of the model, different modes of sliding with almost complete or only partial intermediate solidification are possible.
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Affiliation(s)
- Iakov A Lyashenko
- Berlin University of Technology, 10623 Berlin, Germany.,Sumy State University, 40007 Sumy, Ukraine
| | - Alexander E Filippov
- Berlin University of Technology, 10623 Berlin, Germany.,Donetsk Institute for Physics and Engineering, 83114 Donetsk, Ukraine
| | - Mikhail Popov
- Berlin University of Technology, 10623 Berlin, Germany.,National Research Tomsk Polytechnic University, 634050 Tomsk, Russia.,National Research Tomsk State University, 634050 Tomsk, Russia
| | - Valentin L Popov
- Berlin University of Technology, 10623 Berlin, Germany.,National Research Tomsk Polytechnic University, 634050 Tomsk, Russia.,National Research Tomsk State University, 634050 Tomsk, Russia
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