Academic literature on the topic 'Crystallization onset time'

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Journal articles on the topic "Crystallization onset time"

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Davoodi, E., M. Hasan, S. Rana, and G. Kumar. "Effect of loading rate on crystallization of metallic glass supercooled liquids." American Journal of Physical Sciences and Applications 1, no. 3 (July 1, 2020): 18–21. http://dx.doi.org/10.15864/ajps.1303.

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Metallic glasses exhibit unique thermoplastic processing capability, which is enabled by their metastable supercooled liquid state below the crystallization temperature. The thermoplastic processing critically depends on the crystallization time (processing time window), temperature (viscosity), applied load, and strain-rate. Among these parameters, the effects of crystallization time and processing temperature have been extensively studied. However, the effects of load and loading rate have not been thoroughly investigated. In this work, we performed a systematic study of load on the supercoo
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Tkatch, V. I., S. V. Vasiliev, and K. A. Svyrydova. "Identification of the onset crystallization time in metallic glasses at isothermal conditions." Journal of Non-Crystalline Solids 463 (May 2017): 102–7. http://dx.doi.org/10.1016/j.jnoncrysol.2017.03.008.

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Boudjemline, Attia, David T. Clarke, Neville J. Freeman, James M. Nicholson, and Gareth R. Jones. "Early stages of protein crystallization as revealed by emerging optical waveguide technology." Journal of Applied Crystallography 41, no. 3 (April 8, 2008): 523–30. http://dx.doi.org/10.1107/s0021889808005098.

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A highly sensitive method for studying the onset of protein crystallization in real time using an optical-waveguide-based technique is reported. Dual polarization interferometry uses light from sensing and reference waveguides to produce an interference pattern, which when the sensing waveguide is immersed in a protein solution supplies information on the thickness and density of any protein adlayer on the sensing waveguide's surface. This technique provides evidence that crystallization proceedsvialarge protein aggregates but, more strikingly, shows dramatic light loss from the sensing wavegu
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D´Eramo, F. J., J. J. Esteban, M. Demartis, E. Aragón, J. E. Coniglio, and L. P. Pinotti. "Time lag between metamorphism and crystallization of anatectic granites (Córdoba, Argentina)." Geologica Acta 18 (November 2, 2020): 1–14. http://dx.doi.org/10.1344/geologicaacta2020.18.17.

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SHRIMP and LA-ICP-MS analyses carried out on zircons from the Río de los Sauces granite revealed their metamorphic and igneous nature. The metamorphic zircons yielded an age of 537±4.8 (2σ)Ma that probably predates the onset of the anatexis during the Pampean orogeny. By contrast, the igneous zircons yielded a younger age of 529±6 (2σ)Ma and reflected its crystallization age. These data point to a short time lag of ca. 8Myr between the High Temperature (HT) metamorphic peak and the subsequent crystallization age of the granite. Concordia age of 534±3.8 (2σ)Ma, for both types of zircon populati
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Simmance, Kerry, Wouter van Beek, and Gopinathan Sankar. "Time resolved in situ X-ray diffraction study of crystallisation processes of large pore nanoporous aluminophosphate materials." Faraday Discussions 177 (2015): 237–47. http://dx.doi.org/10.1039/c4fd00179f.

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Time resolved high-resolution X-ray powder diffraction was utilized to obtain detailed changes in the crystal structure parameters during the hydrothermal crystallization process of the nanoporous aluminophosphate AlPO-5 (AFI) structure. This in situ study offered not only the influence of metal ions on the onset of crystallization and estimation of the activation energy of the process, but also allowed us to determine in detail the changes in lattice parameters during this process. More importantly the time-resolved study clearly showed the lattice expansion in the divalent metal ions substit
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Misyura, S. Y., and V. S. Morozov. "Nonisothermal desorption of droplets of LiBr salt solution on a heated wall." MATEC Web of Conferences 194 (2018): 01040. http://dx.doi.org/10.1051/matecconf/201819401040.

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Nonisothermal desorption and crystallization of droplets of aqueous salts solution of H2O/LiBr were studied experimentally. A droplet was placed on a horizontal heated wall. The initial concentration of salt C0 varied within 0-53 %. The wall temperature Tw varied within 80 - 235 °C and ambient air pressure was 1 bar. It was shown that the desorption time t1 decreases sharply with increasing Tw and at Tw < 150-160 °C. The desorption time t1 is the time until the onset of crystallization. The desorption time t1 is quasi-constant at Tw > 160 °C and increases with growth in C0.
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Lednický, František, and Miroslava Muchová. "Revival of the Induction Time Concept in the Theory of Polymer Crystallization." Collection of Czechoslovak Chemical Communications 58, no. 10 (1993): 2444–50. http://dx.doi.org/10.1135/cccc19932444.

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To monitor early stages of spherulite growth, a microscopical method has been worked out based on the photometrical measurement of the intensity of depolarized light during isothermal crystallization. Application of the technique to polypropylene yields the evidence of existence of nucleation induction time which reflects the processes taking place prior to the onset of spherulite growth, viz. the formation of stable crystal nuclei. Using the method, it is possible to evaluate also systems with a dispersed phase, the interfacial relations being reflected in the induction time of the nucleation
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Cai, Yan-Hua, and Yan-Hua Zhang. "The Crystallization, Melting Behavior, and Thermal Stability of Poly(L-lactic acid) Induced byN,N,N′-Tris(benzoyl) Trimesic Acid Hydrazide as an Organic Nucleating Agent." Advances in Materials Science and Engineering 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/843564.

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N,N,N′-Tris(benzoyl) trimesic acid hydrazide (TTAD), as a novel nucleating agent of poly(L-lactic acid) (PLLA), was synthesized and characterized by FT-IR and1H NMR. The crystallization, melting behavior, and thermal stability of PLLA induced by TTAD were investigated through DSC, TGA, depolarized-light intensity measurement, and so forth. The crystallization behavior indicated that the presence of TTAD accelerated the overall PLLA crystallization. Compared to neat PLLA, the crystallization onset temperature of PLLA/1%TTAD increased from 101.36°C to 125.26°C, the melt-crystallization peak temp
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Hadinata, Chitiur, Claus Gabriel, Maximilian Ruellmann, Nhol Kao, and Hans-Martin Laun. "Correlation between the gel time and quiescent/quasi-quiescent crystallization onset time of poly(butene-1) as determined from rheological methods." Rheologica Acta 45, no. 5 (November 29, 2005): 631–39. http://dx.doi.org/10.1007/s00397-005-0017-7.

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Yan, Zhicheng, Yan Liu, Shaopeng Pan, Yihua Hu, Jing Pang, and Weimin Wang. "The Structural Evolution of Al86Ni9La5 Glassy Ribbons during Milling at Room and Cryogenic Temperatures." Materials 11, no. 10 (October 12, 2018): 1956. http://dx.doi.org/10.3390/ma11101956.

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Melt-spun metallic Al86Ni9La5 glassy ribbons solidified at different circumferential speeds (Sc) were subjected to high-energy ball milling at room and cryogenic temperatures. Crystallization induced by milling was found in the Al86Ni9La5 solidified at lower circumferential speed (Sc = 14.7 m/s), while the Al86Ni9La5 with Sc = 36.6 m/s kept amorphous. Besides, a trend of structural rejuvenation during milling process was observed, as the onset temperatures (Tx1, Tx2) and the crystallization enthalpies (ΔH1, ΔH2) first decreased and then increased along with the milling time. We explored the st
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Dissertations / Theses on the topic "Crystallization onset time"

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Hadinata, Chitiur, and chitiurh@yahoo com au. "Flow-induced crystallization of polybutene-1 and effect of molecular parameters." RMIT University. Civil, Environmental and Chemical Engineering, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080212.163803.

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There are two main goals of this thesis: to investigate the flow-induced crystallization behaviour of Polybutene-1 (PB-1 samples, and to study the effects of molecular parameters on the crystallization behaviour While flow-induced crystallization is not a new area in polymer research, well-defined experimental methods that allow access to high flow rate range comparable to that encountered in real processing are still lacking. Two types of flow are considered: shear and uniaxial elongational. Regarding the second aim, several molecular parameters considered are: molecular weight, molecular wei
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Conference papers on the topic "Crystallization onset time"

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Vestel, Michael J., David S. Grummon, and Albert P. Pisano. "Crystallization of Sputtered NiTi Films." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-41216.

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Sputtered, crystalline thin films of nickel-titanium (NiTi) can display both superelastic properties and the shape memory effect, either of which may be used in films for MEMS sensors and actuators. However, direct deposition of crystalline NiTi films requires high deposition temperature and cooldown can lead to catastrophic delamination from extrinsic residual stress. To avoid delamination, especially for thick films (>5 micrometers) the amorphous form of NiTi can be sputter deposited at a low temperature, patterned and etched, released, and then crystallized to develop the proper micr
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Trask, Jason, Lin Cui, Andrew J. Wagner, K. Andre Mkhoyan, and Uwe Kortshagen. "Seed-Induced Crystallization of Amorphous Silicon for the Formation of Large-Grain Poly-Crystalline Silicon." In ASME 2010 4th International Conference on Energy Sustainability. ASMEDC, 2010. http://dx.doi.org/10.1115/es2010-90443.

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A new method for reducing crystallization time of hydrogenated amorphous silicon thin films and more successfully controlling grain structure has been studied through seeding of the bulk matrix with nanocrystallites during film deposition. Films were deposited by a system in which crystallites and amorphous film were synthesized in separate RF-powered plasmas. Average crystallite size was confirmed to be 20 to 50 nm via TEM imaging. Several films with various initial crystallite population densities were produced, and their crystallization kinetics were studied via Raman spectroscopy throughou
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Shi, Bohui, Yang Liu, Lin Ding, Xiaofang Lv, and Jing Gong. "Simulation of Gas-Hydrate Slurry Stratified Flow With Inward and Outward Hydrate Growth Model." In 2016 11th International Pipeline Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/ipc2016-64303.

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The topic of hydrate formation and blocking in offshore petroleum industry has attracted more and more attentions, which is known as one of the flow assurance issues. A new technology has been proposed to avoid the occurrence of hydrate blockage in multiphase transportation system, which is hydrate slurry flow technology, also named as cold flow technology. The low dosage hydrate inhibitor of anti-agglomerate was added into the flow systems to allow hydrate formation in the liquid phase while it prevented the aggregation of hydrate particles. Thus these particles were evacuated with the liquid
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