Results 111 to 120 of about 705 (160)
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Review of recent developments in surface nanocrystallization of metallic biomaterials
Nanoscale, 2021Surface nanocrystallization by surface severe plastic deformation imparts enhanced biomechanical and biological performances to metallic biomaterials.
Srijan Acharya +2 more
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Surface Nanocrystallization for Bacterial Control
Langmuir, 2010Stainless steel is commonly used in indwelling medical devices, food preparation, and heavy industry. Bacteria display reduced adherence to nanocrystallized stainless steel. In this article, we present quantitative information on the surface adhesive force, surface electron work function, and bacterial adherence to surfaces of nanocrystallized ...
Bin, Yu +4 more
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Surface nanocrystallization modification of anhydrite
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2012Abstract This paper reported a successful preparation of CaCO3/anhydrite composites of anhydrite coated with nanosized CaCO3 by chemical precipitation route using the Ca(OH)2–H2O–CO2 reaction system. The samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and BET ...
Wu Zhao, Huaming Yang, Chengli Huo
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Surface Nanocrystallization by Surface Mechanical Attrition Treatment
Materials Science Forum, 2008Based on strain-induced grain refinement, a novel surface mechanical attrition treatment (SMAT) technique has been developed to synthesize a nanostructured surface layer on metallic materials in order to upgrade their overall properties and performance without changing their chemical compositions.
N.R. Tao, Jian Lu, Ke Lu
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Investigation of surface nanocrystallization of 45 steel
International Technology and Innovation Conference 2006 (ITIC 2006), 2006By means of Supersonic Fine Particles Bombarding (SFPB), a nanostructured surface layer was fabricated on a 45 Steel plate consisted of pearlite and ferrite phases. The microstructure features of various sections in the treated surface layer were characterized by using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron ...
null Ba Dema +3 more
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Surface Self-nanocrystallization in Copper Electroforming
Journal of Materials Engineering and Performance, 2018The coarse columnar grain layer generated on top of electroforming deposits leads to low surface strength and poor global performance of deposits. Here, we introduce a particle abrasive-induced surface self-nanocrystallization process, which is a part of the electroforming process rather than involving complex poststeps using special equipment.
Chunjian Shen, Zengwei Zhu, Di Zhu
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Nanocrystallization of zirconium subjected to surface mechanical attrition treatment
Nanotechnology, 2008A nanostructured surface layer with thickness of about 20 µm was formed on commercially pure zirconium using surface mechanical attrition treatment (SMAT). The microstructural features of the surface layer were systematically investigated using optical microscopy (OM), x-ray diffraction (XRD), transmission electron microscopy (TEM) and high-resolution ...
L, Zhang, Y, Han, J, Lu
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Surface nanocrystallization of stainless steel for reduced biofilm adherence
Nanotechnology, 2008Stainless steel is one of the most common metallic biomedical materials. For medical applications, its resistance to the adherence of biofilms is of importance to the elimination or minimization of bacterial infections. In this study, we demonstrate the effectiveness of a process combining surface nanocrystallization and thermal oxidation (or a ...
Bin, Yu +4 more
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Surface Nanocrystallization of Zircaloy-4 by Surface Mechanical Attrition Treatment
Materials Science Forum, 2010A nanostructured surface layer was induced on zircaloy-4 by the method of surface mechanical attrition treatment (SMAT). X-ray diffraction and microhardness tester were applied to identify the average grain size and hardness of specimen processed for different duration, transmission electron microscopy and high-resolution transmission electron ...
Cong Hui Zhang +3 more
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Thermal Stability of 40Cr Steel with Surface Nanocrystallization
Materials Science Forum, 2006Surface Nanocrystallization(SNC) is a new method of fabricating nanostructured materials while thermal stability is an important problem for the application of nanostructured materials. A nanostructured layer was fabricated on the surface of 40Cr steel by Supersonic Particles Bombarding method, and the variation of microstructure and microhardness of ...
Yu Liang Liu, Tian Ying Xiong, Ke Yang
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