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Journal articles on the topic 'Amorphous body'

Author: Grafiati
Published: 28 May 2022
Last updated: 30 July 2025

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1

Petcu, Elizabeth J. "Amorphous Ornament:." Journal of the Society of Architectural Historians 77, no. 1 (2018): 29–55. http://dx.doi.org/10.1525/jsah.2018.77.1.29.

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Leon Battista Alberti famously likened the relationship between architectural structure and superstructure to the dualism of skeleton and skin. In Amorphous Ornament: Wendel Dietterlin and the Dissection of Architecture, Elizabeth J. Petcu scrutinizes how the Architectura treatise (1593–98) of Strasbourg artist Wendel Dietterlin the Elder (ca. 1550–99) subverted Alberti's theory and the aesthetic of stability it promoted by popularizing a style of amorphous architectural motifs that recall bone, cartilage, muscle, and flesh, melding built framework with decorative surface. Drawing these corpor
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2

Harada, T., and T. Kuji. "Crystallization of amorphous melt-spun Nd15Fe77Bx (x = 6–14) alloys." Journal of Materials Research 9, no. 2 (1994): 372–76. http://dx.doi.org/10.1557/jmr.1994.0372.

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In the process of crystallization of amorphous melt-spun Nd15Fe77Bx (x = 6–14) alloys, it was found that the crystallization behavior strongly depended upon the boron content even in the same equilibrium three-phase coexistence range. The Nd2Fe14B phase was crystallized directly from the amorphous state in the amorphous Nd-Fe-B materials with relatively lower boron content (Nd15Fe77B6 and Nd15Fe77B8 alloys). In contrast, the metastable body-centered-cubic (bcc) α-iron phase crystallized from the amorphous state prior to the crystallization of the Nd2Fe14B phase in the amorphous Nd-Fe-B materia
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3

Dou, Hui-Min, Ji-Heng Ding, Hao Chen, Zhen Wang, A. Fang Zhang, and Hai-Bin Yu. "Bio-based, biodegradable and amorphous polyurethanes with shape memory behavior at body temperature." RSC Advances 9, no. 23 (2019): 13104–11. http://dx.doi.org/10.1039/c9ra01583c.

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4

Sinkler, W., C. Michaelsen, and R. Bormann. "A transmission electron microscopy investigation of inverse melting in Nb45Cr55." Journal of Materials Research 12, no. 7 (1997): 1872–84. http://dx.doi.org/10.1557/jmr.1997.0257.

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In inverse melting, a supersaturated crystalline phase transforms polymorphously under heat treatment to the amorphous state. Inverse melting of body-centered cubic (bcc) Nb45Cr55 is studied using transmission electron microscopy (TEM) and high resolution TEM (HRTEM). The crystalline to amorphous transformation is heterogeneous, initiating at the bcc grain boundaries. HRTEM reveals 2–3 nm domains with medium range order (MRO) in the amorphous phase. Preferred orientation of MRO domains is found on a scale corresponding to the precursor bcc grain size. Using HRTEM and calorimetry, MRO developme
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5

Wu, Xue Mei, Wei Ping Chen, Chao Yang, Sheng Guan Qu, and Yuan Yuan Li. "Fabrication of Ti66V13Cu8Ni6.8Al6.2 Bulk Composites with High Strength by Spark Plasma Sintering and Crystallization of Amorphous Phase." Advanced Materials Research 284-286 (July 2011): 25–31. http://dx.doi.org/10.4028/www.scientific.net/amr.284-286.25.

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Ti66V13Cu8Ni6.8Al6.2 bulk composites with high strength were fabricated by spark plasma sintering of amorphous Ti66V13Cu8Ni6.8Al6.2 powder synthesized by mechanical alloying. X-ray diffraction (XRD), differential scanning calorimeter (DSC), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) were employed to investigate the synthesized amorphous powder and the fabricated composites. Results show that the supercooled liquid region ΔTx and the crystallization enthalpy DHx of the synthesized amorphous powder decrease, in relative with amorphous Ti66Nb13Cu8Ni6.8Al6.2 pow
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6

TANIGUCHI, Takashi. "Fine-grained cBN Sintered Body Obtained by Amorphous Boron Nitride." Review of High Pressure Science and Technology 13, no. 1 (2003): 16–23. http://dx.doi.org/10.4131/jshpreview.13.16.

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7

Luo, Chanyuan, Xiulin Ji, Cuicui Ji, Yingtao Zhang, and Hui Wang. "Tribocorrosion of Fe-Based Amorphous Coating in Simulated Body Fluids." Lubricants 6, no. 2 (2018): 37. http://dx.doi.org/10.3390/lubricants6020037.

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8

Righetti, Maria Cristina, Maria Laura Di Lorenzo, Patrizia Cinelli, and Massimo Gazzano. "Temperature dependence of the rigid amorphous fraction of poly(butylene succinate)." RSC Advances 11, no. 41 (2021): 25731–37. http://dx.doi.org/10.1039/d1ra03775g.

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9

Kuz’mina, V. V., E. Y. Chornaya, E. A. Kulivatskaya, G. V. Zolotareva, and V. A. Sheptitskiy. "Effect of crystalline and amorphic phenol on characteristics of peptidases and glycosidases in chironomid larvae." Biosystems Diversity 28, no. 2 (2020): 175–80. http://dx.doi.org/10.15421/012023.

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The effects of crystalline and amorphous phenol (0.5 mmol/L) on the characteristics of glycosidases, as well as casein-lytic and hemoglobin-lytic peptidases, which function in the whole body of chironomid larvae Chironomus sp. were studied. Crystalline phenol decreased the activity of glycosidases in comparison to the control in the temperature range 0–50 ºС, amorphous phenol – in the temperature range 0–70 ºС. The temperature optimum of glycosidases in whole body of chironomid larvae in control and experiment corresponds to 50 ºС. The activity of glycosidases in comparison to the control decr
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10

Lai, W. S., and B. X. Liu. "Diffusion-limited and asymmetric growth of amorphous layer in Ni/Zr bilayer upon annealing." Journal of Materials Research 13, no. 6 (1998): 1712–16. http://dx.doi.org/10.1557/jmr.1998.0237.

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Asymmetric growth of amorphous layer in a Ni/Zr bilayer, in which a thin disordered interlayer is preset, upon annealing at medium temperatures is observed by molecular-dynamics simulation with an n-body potential. It is shown that the amorphous layer is extended from the interlayer with different speeds toward two opposite directions and that the growth kinetics follows time dependence of t1/2, indicating amorphization upon annealing in the Ni/Zr bilayer is indeed through a diffusion-limited reaction. Besides, two low temperature limits allowing the growth of amorphous layer toward Ni and Zr
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11

Cartlidge, Edwin, Susan Curtis, Patricia Daukantas, et al. "Research and Industry News." Optics and Photonics News 35, no. 5 (2024): 12. http://dx.doi.org/10.1364/opn.35.5.000012.

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12

Uchino, Tomohiro, and Keitaro Toda. "Synthesis of Zinc-Containing Amorphous Calcium Phosphate." Key Engineering Materials 529-530 (November 2012): 119–22. http://dx.doi.org/10.4028/www.scientific.net/kem.529-530.119.

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Zinc is an essential trace element in body and has an important role of bone formation. Osteoporosis occurs by imbalance of osteoclasts and osteoblasts activity. The osteoclasts activity lowers the pH of peripheral body environment. Therapeutic agents release material in response to the osteoclasts activity is expected to be a controlled released material. In this study, Zn-containing amorphous calcium phosphate (ACP) powder was synthesized by wet synthesis. Zn content of obtained powders was higher than that of beginning content. ACP powders could be easy to take Zn at wet synthesis. After so
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13

Suo, Zhong Yuan, Jian Jun Chen, Yan Ling Song, and Ke Qiang Qiu. "A New Ti-Zr-Cu-Si Amorphous Alloy with Excellent Biocompatibility." Advanced Materials Research 791-793 (September 2013): 435–39. http://dx.doi.org/10.4028/www.scientific.net/amr.791-793.435.

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A new Ti-based amorphous alloy Ti35Zr21Cu40Si4 with about 80 μm thickness and 5~8 mm width was fabricated by melt spinning method. The phase structure and thermal stabilities of the Ti35Zr21Cu40Si4 amorphous alloy were investigated by the X-ray diffraction (XRD) and differential scanning calorimetry (DSC), respectively. The Ti35Zr21Cu40Si4 amorphous alloy was cultivated in the simulate body fluid (SBF) for 15 days. And the blood compatibility was evaluated by dynamic clotting time and hemolysis rate test. The Ti35Zr21Cu40Si4 alloy exhibits fully amorphous phase and high thermal stability with
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14

Wan, J., M. J. Gasch, and A. K. Mukherjee. "Silicon Carbonitride Ceramics Produced by Pyrolysis of Polymer Ceramic Precursor." Journal of Materials Research 15, no. 8 (2000): 1657–60. http://dx.doi.org/10.1557/jmr.2000.0238.

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Two processing routes were explored to produce crack-free amorphous Si–N–C ceramics by pyrolysis of polyureasilazane ceramic precursor. Using a warm-pressing/ pyrolysis route, a ceramic body with certain amount of open porosity was produced; densification behavior during pyrolysis was examined. A prepyrolysis/binding/pyrolysis route was also developed. Ceramics formed using this route were characterized by higher density, lower volume shrinkage during consolidation, and larger viable material size. Open porosity was essentially absent in consolidated amorphous materials produced by this second
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15

Gonzáz, J. "Temperature dependence of the soft magnetic character of Fe73.5Cu1Nb3Si13.5B9 amorphous and nanocrystalline alloys." Journal of Materials Research 18, no. 5 (2003): 1035–38. http://dx.doi.org/10.1557/jmr.2003.0142.

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Results on microstructure and coercivity of current-annealed Fe73.5Cu1Nb3Si13.5B9 amorphous alloy treated at different current densities (12–56 A/mm2) and duration (0.5–720 min) are presented. Saturation magnetization and coercivity dependencies with the current density of the nanocrystalline samples is explained by considering the presence of two phases: nanocrystals of Fe(Si) body-centered cubic (bcc) grains and the residual amorphous matrix. An increase in the magnetic hardness observed when the sample was heated by current densities, giving rise to an increase in the sample temperature abo
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16

Rossi, Stefano, Luciana Volgare, Carine Perrin-Pellegrino, Carine Chassigneux, Erick Dousset, and Marielle Eyraud. "Dual Electrochemical Treatments to Improve Properties of Ti6Al4V Alloy." Materials 13, no. 11 (2020): 2479. http://dx.doi.org/10.3390/ma13112479.

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Surface treatments are considered as a good alternative to increase biocompatibility and the lifetime of Ti-based alloys used for implants in the human body. The present research reports the comparison of bare and modified Ti6Al4V substrates on hydrophilicity and corrosion resistance properties in body fluid environment at 37 °C. Several surface treatments were conducted separately to obtain either a porous oxide layer using nanostructuration (N) in ethylene glycol containing fluoride solution, or bulk oxide thin films through heat treatment at 450 °C for 3 h (HT), or electrochemical oxidation
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17

He, Meifeng, Mingming Wang, Ke Zhang, Haitao Wang, Hong Jiang, and Zhanjun Lu. "Effect of Varying Ce Content on the Mechanical Properties and Corrosion Resistance of Low-Elastic-Modulus Mg-Zn-Ce Amorphous Alloys." Metals 12, no. 10 (2022): 1637. http://dx.doi.org/10.3390/met12101637.

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Magnesium alloys have good biocompatibility because they have mechanical properties similar to those of human bones, are biodegradable, and release non-toxic corrosion products and ions in the human body. In this study, a new type of Mg70−xZn30Cex (x = 2, 4, 6, and 8) amorphous magnesium alloy was prepared by copper roller melt-spinning, and the corresponding mechanical properties and corrosion resistance were studied. The results showed that when x = 4 and 6, the Mg-Zn-Ce amorphous alloys had decent amorphous forming abilities. The addition of Ce could effectively improve the ductility of the
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18

Bin, Shi Jie Bryan, Kai Soon Fong, Beng Wah Chua, and Manoj Gupta. "Development of Biocompatible Bulk MgZnCa Metallic Glass with Very High Corrosion Resistance in Simulated Body Fluid." Materials 15, no. 24 (2022): 8989. http://dx.doi.org/10.3390/ma15248989.

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Magnesium-zinc-calcium (Mg-Zn-Ca) alloys as a biomaterial have attracted much attention recently, owing to their excellent biocompatibility, similar mechanical properties to natural bone, and biodegradable properties. Despite the numerous advantages of MgZnCa alloys, the rapid degradation of magnesium proved challenging as the implant in unable to retain its structural integrity for a sufficient duration of time. For metallic glasses, the capability to produce a bulk sample that is sufficiently large for useful applications have been far less successful owing to challenging processing paramete
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19

von Rohr, Fabian, Michał J. Winiarski, Jing Tao, Tomasz Klimczuk, and Robert Joseph Cava. "Effect of electron count and chemical complexity in the Ta-Nb-Hf-Zr-Ti high-entropy alloy superconductor." Proceedings of the National Academy of Sciences 113, no. 46 (2016): E7144—E7150. http://dx.doi.org/10.1073/pnas.1615926113.

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High-entropy alloys are made from random mixtures of principal elements on simple lattices, stabilized by a high mixing entropy. The recently discovered body-centered cubic (BCC) Ta-Nb-Hf-Zr-Ti high-entropy alloy superconductor appears to display properties of both simple crystalline intermetallics and amorphous materials; e.g., it has a well-defined superconducting transition along with an exceptional robustness against disorder. Here we show that the valence electron count dependence of the superconducting transition temperature in the high-entropy alloy falls between those of analogous simp
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20

MOTO, KEBA, ZUFAR ABUBAKAR, and LIA SETIARINI. "THE INFLUENCE OF AMORPHOUS PHASE TO PLASTIC HARDNESS OF SUPER- AND ULTRAHARD NANOCOMPOSITES." International Journal of Nanoscience 04, no. 04 (2005): 509–15. http://dx.doi.org/10.1142/s0219581x05003504.

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Hardness and yield stress of (polycrystalline) materials typically increase with decreasing grain size. However, in nanocomposites materials which consist of nanocrystalline phase (filler) embedded in amorphous phase (matrix), the hardness relation to the crystallite size curve shifts due to amorphous fraction. Experimental data show that some coatings have very different hardness ( H v > 40-105 GPa ) even though they have similar grain (nanocrystalline) size. The shifting of hardness versus crystallite size curve in nanocomposites is of particular interest. Here we use mechanical system mo
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21

Carpenter, G. J. C., J. J. Dubowski, and D. F. Williams. "Transmission electron microscopy characterization of the microstructure of Cd3As2 films prepared by pulsed-laser evaporation." Canadian Journal of Physics 65, no. 8 (1987): 961–65. http://dx.doi.org/10.1139/p87-151.

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Transmission electron microscopy with an analytical X-ray system has been used to investigate Cd3As2 films prepared by pulsed-laser evaporation. The films were deposited on amorphous substrates at ~ 120 °C. They consisted mainly of a fine polycrystalline array. The crystal structure was identified as the body-centered tetragonal form of Cd3As2. No other crystallographic phase of Cd3As2 was observed. Some regions with amorphous or eutectic inclusions were also observed. These results have been correlated with the electrical properties of pulsed-laser evaporated Cd3As2 films.
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22

de Ruiter, Lisa, Anette Eleonora Gunnæs, Dag Kristian Dysthe, and Håkon Austrheim. "Quartz dissolution associated with magnesium silicate hydrate cement precipitation." Solid Earth 12, no. 2 (2021): 389–404. http://dx.doi.org/10.5194/se-12-389-2021.

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Abstract. Quartz has been replaced by magnesium silicate hydrate cement at the Feragen ultramafic body in south-east Norway. This occurs in deformed and recrystallized quartz grains deposited as glacial till covering part of the ultramafic body. Where the ultramafic body is exposed, weathering leads to high-pH (∼ 10), Mg-rich fluids. The dissolution rate of the quartz is about 3 orders of magnitude higher than experimentally derived rate equations suggest under the prevailing conditions. Quartz dissolution and cement precipitation start at intergranular grain boundaries that act as fluid pathw
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23

Hsiang, Hsing-I., Liang-Chih Wu, Chih-Cheng Chen, and Wen-Hsi Lee. "Power Molding Inductors Prepared Using Amorphous FeSiCrB Alloy Powder, Carbonyl Iron Powder, and Silicone Resin." Materials 15, no. 10 (2022): 3681. http://dx.doi.org/10.3390/ma15103681.

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In this study, amorphous FeSiCrB alloy powder, carbonyl iron powder, and high-temperature heat-resistant silicone resin were used to prepare power molding inductors, and the effects of different heat treatment procedures on the magnetic properties were investigated. Two heat treatment procedures were used. Procedure 1: Amorphous FeSiCrB alloy powder was pre-heat-treated, then mixed with carbonyl iron powder and silicone resin and uniaxially pressed to prepare power inductors. Procedure 2: A mixture of amorphous FeSiCrB alloy powder, carbonyl iron powder, and silicone resin was uniaxially press
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24

Skipper, L. J., F. E. Sowrey, D. M. Pickup, et al. "The Atomic-Scale Interaction of Bioactive Glasses with Simulated Body Fluid." Materials Science Forum 480-481 (March 2005): 21–26. http://dx.doi.org/10.4028/www.scientific.net/msf.480-481.21.

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The formation of a carbonate-containing hydroxyapatite, HCAp, layer on bioactive calcium silicate sol-gel glass of the formula (CaO)0.3(SiO2)0.7 has been studied in-vitro in Simulated Body Fluid (SBF). Extended X-ray Absorption Fine Structure (EXAFS), X-ray Absorption Near Edge Structure (XANES), X-ray diffraction (XRD), and solid state nuclear magnetic resonance (NMR) measurements have been performed with results showing the formation of a significantly amorphous HCAp layer after less than 5 hours in solution.
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25

MARUYAMA, Norio, Kozo NAKAZAWA, Masae SUMITA, and Takao HANAWA. "Fatigue Properties of Zr-Based Bulk Amorphous Alloy in Pseudo-Body Fluid." Proceedings of the JSME annual meeting 2000.1 (2000): 433–34. http://dx.doi.org/10.1299/jsmemecjo.2000.1.0_433.

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26

Khait, Yu L., and R. Beserman. "Kinetic many-body model of recrystallization of pure and doped amorphous silicon." Physical Review B 33, no. 4 (1986): 2983–86. http://dx.doi.org/10.1103/physrevb.33.2983.

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27

Royle, G. J., M. Farquharson, R. Speller, and G. Kidane. "Applications of X-ray diffraction analysis in crystalline and amorphous body tissues." Radiation Physics and Chemistry 56, no. 1-2 (1999): 247–58. http://dx.doi.org/10.1016/s0969-806x(99)00284-4.

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28

Li, Yongyan, Zhuofan Liang, Lianzan Yang, et al. "Surface Morphologies and Mechanical Properties of Mg-Zn-Ca Amorphous Alloys under Chemistry-Mechanics Interactive Environments." Metals 9, no. 3 (2019): 327. http://dx.doi.org/10.3390/met9030327.

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Mg-Zn-Ca amorphous alloys are considered as potential bone implants. A large number of works have focused on the alloys under free corrosion environment. However, the real service environment of bone implants is a kind of chemistry-mechanics interactive environment in which the materials not only suffer corrosion by body fluids but also bear applied force induced by body movement. In order to imitate the real service environment, surface morphologies and mechanical properties of Mg-Zn-Ca amorphous alloys were studied under different chemistry-mechanics interactive environments in this paper. I
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29

Galashev, Alexander, Yurii Zaikov, Kseniya Abramova, Oksana Rakhmanova, and Yurii Mochalov. "Molecular dynamics simulation of uranium nitride oxidation." Journal of the Serbian Chemical Society, no. 00 (2024): 110. https://doi.org/10.2298/jsc240926110g.

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A molecular dynamic simulation of the uranium mononitride (UN) oxidation in an Ar-O medium in the temperature range of 373-2073 K is executed. The study is performed for UN particles with a crystalline and amorphous structure at an oxygen concentration in the gas mixture of 22.5 mol. %. The most efficient oxidation for an amorphous particle occurs at lower temperatures than that for a crystalline particle. Unlike crystalline fragments, amorphous particles undergo more severe fragmentation when they bind to oxygen. Fragmentation of UN particles is one of the main factors regulating the oxidatio
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30

Zhang, R. F., and B. X. Liu. "Amorphous alloys synthesized by interface-assisted ion beam mixing in the Ag–W system with the largest positive heat of formation." Journal of Materials Research 18, no. 7 (2003): 1499–501. http://dx.doi.org/10.1557/jmr.2003.0206.

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Amorphous alloys were synthesized by interface-assisted ion beam mixing in the W-rich portion of the Ag–W system. These alloys are characterized by the largest positive heat of formation among the transition-metal alloys and were formed through a two-step structural transition in the alternately deposited Ag–W films. First, during alternate deposition of the nano-sized Ag and W layers, the interfacial free energy drove the Ag–W interaction, which resulted in an intermediate body-centered-cubic (bcc) supersaturated solid solution. Second, the bcc solid solution transformed into an amorphous sta
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31

Stiglmair-Herb, Maria Th, Regine Scheid, and T. Hänicheni. "Spontaneous inclusion body hepatitis in young tamarins: I. Morphological study." Laboratory Animals 26, no. 2 (1992): 80–87. http://dx.doi.org/10.1258/002367792780745913.

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Over a period of 4 years approximately 60% of the new born and juvenile animals in a breeding colony of tamarins ( Saguinus fuscicollis) died a sudden death. Histological examination at necropsy revealed interstitial hepatitis in 22 of the 30 young animals of the present study. The hepatocytes contained intranuclear inclusion bodies in 12 of the 22 cases. Upon ultrastructural examination, tubulovesicular structures and amorphous material were found in the nuclei. The endoplasmic reticulum had proliferated and was closely associated with undulating curved membranes. These morphological alterati
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32

Song, Xuening, Yingting Luo, Wenduo Zhao, Simiao Liu, Yuzhuo Wang, and Hao Zhang. "Preparation and Characterization of Lutein Co-Amorphous Formulation with Enhanced Solubility and Dissolution." Foods 13, no. 13 (2024): 2029. http://dx.doi.org/10.3390/foods13132029.

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Lutein is an oxygenated fat-soluble carotenoid and a functional compound with proven health benefits for the human body. Nevertheless, the poor water solubility and low oral bioavailability of lutein greatly limit its application. To address this, we developed an effective approach to enhance the water solubility of lutein through co-amorphous formulation. Specifically, the lutein-sucralose co-amorphous mixture was prepared at a molar ratio of 1:1 using ethanol and water as solvents by employing the solvent evaporation method, followed by solid-state characterization and dissolution testing co
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33

Natsik, V. D., and H. V. Rusakova. "Low-temperature elasticity of amorphous polymers: Molecular model and rheological equation." Low Temperature Physics 48, no. 3 (2022): 253–63. http://dx.doi.org/10.1063/10.0009545.

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A molecular-kinetic model of the processes of highly elastic deformation of amorphous polymers is proposed and, on its basis, nonlinear rheological equations are obtained; these latter make it possible to describe these processes under changes of deformation conditions in a wide range: temperature, deforming stress, and strain rate. A connection of the nonlinear micromechanical model of a polymer with the classical macromechanical model of a standard linear body is established. The transitions between the structural-deformation states of a warm and frozen elastomer, as well as the effects of l
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34

Ghaith, El-Sayed, Toshihiro Kasuga, and Masayuki Nogami. "Amorphous Calcium Silicate Coating on Metallic Titanium." Advanced Materials Research 11-12 (February 2006): 235–38. http://dx.doi.org/10.4028/www.scientific.net/amr.11-12.235.

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Amorphous calcium silicate coating on a metallic titanium substrate for hard tissue replacement was prepared by a sol-gel method. Calcium silicate film was deposited on a titanium substrate by a spin-coating technique and subsequently heated at 500°C for 2 h in air. The deposited film, which was dense, had thickness of about 800 nm and strongly adhered to the substrate. Biomimetic apatite-forming ability of the deposited films was examined by soaking in simulated body fluid (SBF). Thin film X-ray diffractometry and scanning electron microscopy showed the formation of apatite on the surface aft
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35

Hamdi, M., Ari Ide-Ektessabi, and J. A. Toque. "In vitro study of electron beam deposited calcium phosphate coating in simulated body fluid." Journal of Materials Research 22, no. 3 (2007): 621–26. http://dx.doi.org/10.1557/jmr.2007.0075.

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Calcium phosphate coatings prepared using the technique of electron beam deposition were immersed in a simulated body fluid for different periods of time to determine their response in vitro. The amorphous as-deposited coatings dissolved completely after a few days of immersion. After annealing in air at 700 °C, the dissolution of a small amount of amorphous phase in the crystalline coatings promotes the precipitation of bonelike apatite on the recessed regions by increasing the local supersaturation of calcium and phosphate ions. Formation of apatite was confirmed by the x-ray diffraction pea
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36

Nowosielski, Ryszard, Katarzyna Cesarz-Andraczke, Rafał Babilas, Artur Maciej, and Ginter Nawrat. "Corrosion Study of Amorphous Mg67Zn29Ca4 Alloy." Solid State Phenomena 227 (January 2015): 439–42. http://dx.doi.org/10.4028/www.scientific.net/ssp.227.439.

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The aim of this paper was investigating the corrosion resistance of Mg67Zn29Ca4metallic glass and evaluating the ability of use studied amorphous alloy for medical applications as biodegradable implants. For comparative purposes the corrosion studies of the amorphous Mg67Zn29Ca4samples were performed in a few simulated body fluids at 37°C. The immersion tests were performed in Ringer’s solution, PWE (multielectrolyte physiological fluid) and 3%NaCl water solution. The amount of evolved hydrogen[ml/cm2] and a corrosion rate Vcorr[g/(day·m2)] of studied Mg67Zn29Ca4alloy were compared. Surface mo
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37

Ebrahiminia, Mahsa, Justin Hooper, and Dmitry Bedrov. "Structural, Mechanical, and Dynamical Properties of Amorphous Li2CO3 from Molecular Dynamics Simulations." Crystals 8, no. 12 (2018): 473. http://dx.doi.org/10.3390/cryst8120473.

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Structural, mechanical, and transport properties of amorphous Li2CO3 were studied using molecular dynamics (MD) simulations and a hybrid MD-Monte Carlo (MC) scheme. A many-body polarizable force field (APPLE&P) was employed in all simulations. Dynamic and mechanical properties of Dilithium carbonate, Li2CO3, in amorphous liquid and glassy phases were calculated over a wide temperature range. At higher temperatures, both anion and cation diffusion coefficients showed similar temperature dependence. However, below the glass transition temperature (T < 450 K) the anions formed a glassy mat
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38

Garzón-Manjón, Alba, Hajo Meyer, Dario Grochla, et al. "Controlling the Amorphous and Crystalline State of Multinary Alloy Nanoparticles in An Ionic Liquid." Nanomaterials 8, no. 11 (2018): 903. http://dx.doi.org/10.3390/nano8110903.

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Controlling the amorphous or crystalline state of multinary Cr-Mn-Fe-Co-Ni alloy nanoparticles with sizes in the range between ~1.7 nm and ~4.8 nm is achieved using three processing routes. Direct current sputtering from an alloy target in the ionic liquid 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide leads to amorphous nanoparticles as observed by high-resolution transmission electron microscopy. Crystalline nanoparticles can be achieved in situ in a transmission electron microscope by exposure to an electron beam, ex situ by heating in vacuum, or directly during synthesis by
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Chen, Duyu, Yu Zheng, Lei Liu, et al. "Stone–Wales defects preserve hyperuniformity in amorphous two-dimensional networks." Proceedings of the National Academy of Sciences 118, no. 3 (2021): e2016862118. http://dx.doi.org/10.1073/pnas.2016862118.

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Disordered hyperuniformity (DHU) is a recently discovered novel state of many-body systems that possesses vanishing normalized infinite-wavelength density fluctuations similar to a perfect crystal and an amorphous structure like a liquid or glass. Here, we discover a hyperuniformity-preserving topological transformation in two-dimensional (2D) network structures that involves continuous introduction of Stone–Wales (SW) defects. Specifically, the static structure factor S(k) of the resulting defected networks possesses the scaling S(k)∼kα for small wave number k, where 1≤α(p)≤2 monotonically de
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Podmaniczky, Frigyes, and László Gránásy. "Nucleation and Post-Nucleation Growth in Diffusion-Controlled and Hydrodynamic Theory of Solidification." Crystals 11, no. 4 (2021): 437. http://dx.doi.org/10.3390/cryst11040437.

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Two-step nucleation and subsequent growth processes were investigated in the framework of the single mode phase-field crystal model combined with diffusive dynamics (corresponding to colloid suspensions) and hydrodynamical density relaxation (simple liquids). It is found that independently of dynamics, nucleation starts with the formation of solid precursor clusters that consist of domains with noncrystalline ordering (ringlike projections are seen from certain angles), and regions that have amorphous structure. Using the average bond order parameter q¯6, we distinguished amorphous, medium ran
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Rodzen, Krzysztof. "The route to achieve isotropy in 3D printing parts via Fused Filament Fabrication with Advanced Semicrystalline Thermoplastics." MATEC Web of Conferences 401 (2024): 02006. http://dx.doi.org/10.1051/matecconf/202440102006.

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This review investigates the challenges of Additive Manufacturing using commodity, engineering, and advanced materials, both amorphous and semicrystalline. It explains the reasons behind the weaker mechanical performance of semicrystalline materials compared to amorphous polymers used in the 3D printing process. The performance of 3D printing is discussed to demonstrate the current position of additive manufacturing as one of the promising techniques meeting the requirements of the 5.0 Industrial Revolution, particularly in terms of delivering personalized products. The differences between amo
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Gelli, Rita, Francesca Ridi, and Piero Baglioni. "The importance of being amorphous: calcium and magnesium phosphates in the human body." Advances in Colloid and Interface Science 269 (July 2019): 219–35. http://dx.doi.org/10.1016/j.cis.2019.04.011.

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Shafiekhani, Azizollah, Ştefan Ţălu, Miroslaw Bramowicz, et al. "Microstructure and tribological properties of FeNPs@a-C:H films by micromorphology analysis and fractal geometry." Industrial and Engineering Chemistry Research 54, no. 33 (2015): 8212–18. https://doi.org/10.1021/acs.iecr.5b02449.

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This paper analyzes the three-dimensional (3D) surface texture of amorphous hydrogenated carbon films with sputtered iron nanoparticles (FeNPs@a-C:H) deposited by a radio-frequency plasma-enhanced chemical vapor deposition method on the quartz substrates. The prepared FeNPs@a-C:H films were used as research materials. The synthesized samples were deposited at four different pressures of 2.5, 3, 3.35, and 3.5 N/m2 in an acetylene gas atmosphere. The Fe and C contents of the thin films were obtained from X-ray photoelectron spectroscopy. The X-ray diffraction profile and electron diffraction pat
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Ma, Chao. "Amorphous Alloys and Ferroelectric Nanomaterials and the Repair of Athletic Ligament Injuries in Soccer." Journal of Nanomaterials 2022 (June 14, 2022): 1–10. http://dx.doi.org/10.1155/2022/4179693.

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Amorphous alloy refers to the orderly arrangement of the internal structure of various substances in nature. Amorphous solid materials include amorphous inorganic materials, amorphous polymers, and amorphous alloys. Amorphous alloys, also known as glassy alloys or metallic glasses, are atomically condensed, long-range disordered, and short-range ordered alloy materials that have the distinctive properties of both metals and glasses. Ligament injury is damage caused by different degrees of damage to the ligaments of a certain part of the body. The purpose of this paper is to investigate amorpho
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Zheng, Yu, Lei Liu, Hanqing Nan, et al. "Disordered hyperuniformity in two-dimensional amorphous silica." Science Advances 6, no. 16 (2020): eaba0826. http://dx.doi.org/10.1126/sciadv.aba0826.

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Disordered hyperuniformity (DHU) is a recently proposed new state of matter, which has been observed in a variety of classical and quantum many-body systems. DHU systems are characterized by vanishing infinite-wavelength normalized density fluctuations and are endowed with unique novel physical properties. Here, we report the discovery of disordered hyperuniformity in atomic-scale two-dimensional materials, i.e., amorphous silica composed of a single layer of atoms, based on spectral-density analysis of high-resolution transmission electron microscopy images. Moreover, we show via large-scale
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Sethuraman, A. R., R. J. De Angelis, and P. J. Reucroft. "Diffraction studies on Ni–Co and Ni–Cr alloy thin films." Journal of Materials Research 6, no. 4 (1991): 749–54. http://dx.doi.org/10.1557/jmr.1991.0749.

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Alloy films of Ni–Co and Ni–Cr of compositional ratios 1:1, 1:3, and 3:1 deposited by vapor deposition were studied by Transmission Electron Microscopy (TEM) and X-Ray Diffraction (XRD). Results of TEM analysis on the Ni–Co alloy films indicated that the films were face-centered cubic (fcc) in structure. XRD results confirmed the TEM observations. TEM analysis of Ni–Cr alloy films showed that the films were body-centered cubic (bcc) in structure. With increase in the Cr content more than 25%, the material contained a higher fraction of an amorphous phase. XRD studies provide limited informatio
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Hematian, Mohammad Nasir, Kamran Hessami, Maasoumeh Saleh, Abolfazl Shirdel Abdolmaleki, Shirin Torabi, and Sedigheh Hantoushzadeh. "Cardiac Calcified Amorphous Tumor in the Neonatal Period." Case Reports in Pediatrics 2022 (January 10, 2022): 1–3. http://dx.doi.org/10.1155/2022/9087597.

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Calcified amorphous tumor (CAT) of the heart is a rare nonneoplastic cardiac mass that may exhibit symptoms resembling malignancy. In this report, we presented a 4-month-old male baby with repeated attacks of cyanosis and a cardiac murmur. Echocardiography revealed a tumoral noncircumscribed mass in the right atrium adhering to the interatrial septum which extends to the inferior vena cava. Cardiac exploration was carried out to excise the tumor. A histopathological study demonstrated the presence of thrombus-like tissue with extensive calcification and foreign body type giant cell reactions.
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Yang, Bang Cheng, L. Gan, Zhen Sheng Li, Y. Huang, Yang Qu, and Xing Dong Zhang. "Preparation of Bioactive Tantalum Metal via Anodic Oxidation Treatment." Key Engineering Materials 330-332 (February 2007): 637–40. http://dx.doi.org/10.4028/www.scientific.net/kem.330-332.637.

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After the Tantalum metal was subjected to the anodic oxidation at suitable voltage in 2M H2SO4 solution, tantalum oxide with rhombic or amorphous structure formed on the metal surface. The Oxide showed apatite formation ability in simulative body fluid at 6d. It meant the anodic oxidation treatment ia an effective method to accelerate the bioactivity of tantalum metal.
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Li, Ning, Cheng Hui Gao, and Guang Ming Cheng. "Preparations Effects on Amorphous/Nanocrystal Ni-Mo Alloys Structure and Properties." Advanced Materials Research 217-218 (March 2011): 21–26. http://dx.doi.org/10.4028/www.scientific.net/amr.217-218.21.

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Ni-Mo alloys have been studied as a prospected cathode for its higher hydrogen evolution reaction properties than other binary compounds. The eletrodeposition parameters and its effects have been investigated in forming Ni-Mo alloys in the present study by measuring the structure and properties of deposits. The forming mechanism of Ni-Mo amorphous deposit is discussed from point of the elements component of view. The X-ray diffraction (XRD) analysis and scanning electron microscopy (SEM) microstructures show that the molybdenum content in the deposit is increased with the molybdate concentrati
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Syed Nuzul Fadzli, S. A., S. Roslinda, and Firuz Zainuddin. "Synthesis and Characterization of Sol-Gel Derived SiO2-CaO Glass." Applied Mechanics and Materials 754-755 (April 2015): 964–68. http://dx.doi.org/10.4028/www.scientific.net/amm.754-755.964.

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A phosphate-free glass based on SiO2-CaO was synthesized by a low temperature acid catalysed sol-gel route. The obtained material was evaluated by X-ray powder diffraction (XRD), Fourier transform infrared (FTIR), scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS). The XRD analysis showed the sol-gel derived glass was amorphous in nature and crystallized when sintered at temperature above 900oC. The crystalline state was consisted of quartz and wollastonite phases. Meanwhile the infrared analysis showed typical transmission bands of monolith silica in the binary glass
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