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Online since: May 2014
Authors: Petra Maier, Gerhard Tober, Christian Ruback, Maria Kuttig
Farahat and El-Bitar4) showed that the induced martensitic transformation starts for Ti- and Nb-alloyed austenitic steels between 36 % and 45 % of thickness reduction by cold rolling.
Table 1: Chemical composition of 1.4404 and 1.4571 [%], welding data C Cr Mn Mo N Ni P S Si Ti filler wire welding flux B 1.4404 0.023 16.620 1.265 2.056 0.042 10.085 0.027 0.002 0.499 Thermanit GE316L Æ 4,0 mm Marathon 213 A 1.4571 ≤ 0,08 16.50 – 18.50 ≤ 2.00 2.00 – 2.50 10.50 – 13.50 ≤ 0.045 ≤ 0.015 ≤ 1.00 5x C – 0.70 The main intention was to figure out the force development during flat rolling, especially of the welded area in dependency of the heat treatment.
The thickness reduction of each pass was 1 mm and the final thickness te = 13 mm corresponding to a deformation degree of φ = -0.43.
Online since: September 2021
Authors: Larisa V. Kardanova, Tembulat A. Kushkhov, Diana A. Makhieva, Marina T. Tkhazaplizheva, Adalbi Z. Khashukoev
Inorganic (mineral) filler is the second important component and determines the following properties of composites: - reduction of polymerization shrinkage (up to 0.5-0.7%); - prevention of deformation of the polymer organic matrix; - decrease in the coefficient of thermal expansion; - reduction of water sorption; - increasing the hardness of the material, its abrasion, and resistance to stress; - improvement of the aesthetic properties of the material, since the filler has a refractive index and translucency close to the corresponding indicators of tooth enamel.
The data obtained from scientific research make it possible for a dentist to determine a new approach to the prevention and treatment of dental caries based on modifying the microstructure of restorative filling materials and polymer-based toothpaste using an electromagnetic field, tested in research in dental clinics.
Online since: January 2025
Authors: Adel Benidir
The strength reduction level observed when decreasing the core diameter in comparison with the capped scale suggested by large part of the international codes is only respected for a core diameter of 79 mm and not for 64 mm.
Considering only the influence of cores diameter and according to [18, 20] (see equation 1 and 3), the strength reduction due to the use of a core lateral dimension of 50 mm is assumed to be around 6 % (correction factor of 1.06).
International Conference on Intelligent Transportation, Big Data & Smart City. 2015
Online since: January 2021
Authors: Masahiro Goto, Takaei Yamamoto, S.Z. Han, J. Kitamura, J.H. Ahn, S.H. Lim, S.J. Lee, T. Utsunomiya, J. Lee
Before SHT, some of specimens were cold-rolled at room temperature with 80% reduction in thickness.
Although the specimens had shallow circumferential notches (20-mm notch radius and 0.25-mm notch depth), the fatigue strength reduction factor, which is a ratio of fatigue limit stress of the plain specimen (a round-bar specimen without the shallow circumferential notch) to that of the present specimen, for this geometry was close to 1, meaning that they could be considered plain.
Crack growth data: (a) crack growth curve (lnl vs.
Online since: January 2019
Authors: Shan Cheng Yan, Hai Zeng Song, Wei Lan Guo, Ka Wang
XRD results show that the sample are consistent with the pyrite CoS2 structure (JCPDS 41-1471), the main diffraction peaks at 27.8°, 32.3°, 36.2°, 39.8°, 46.3° and 55° indexed to the (111), (200), (210), (211), (220), and (311) planes as shown in Figure 1a.[16, 18] The Raman spectra of the synthesized porous CoS2 samples are shown in Figure 1b.[19] The three Raman peaks at about 283 cm-1, 384 cm-1, and 414 cm-1 are assigned to vibration modes Eg, Ag, and Tg of CoS2,[20] which is agreement with the data of CoS2 as shown in Fig. 1 [21].
Liu, NiS2, nanosheet array: A high-active bifunctional electrocatalyst for hydrazine oxidation and water reduction toward energy-efficient hydrogen production, Mater.
Jin, Earth-abundant metal pyrites (FeS2, CoS2, NiS2, and Their Alloys) for highly efficient hydrogen evolution and polysulfide reduction electrocatalysis, J.
Online since: February 2017
Authors: Chang Chen, Ming Zhou Su, Hui Meng Wang
Laptev et al. [12] reported that the shrinkage occured mainly due to reduction in size of micropores in the pore walls but macropores usually retained their size or even tended to grow.
This load ensured full compression, which obtained force-displacement data beyond the densification.
Therefore, it can be inferred that the volumetric reduction of micropores will remain in a quite low level after sintering when green compacts are well densified.
Online since: April 2008
Authors: F. Willaime, Alain Barbu, Chu Chun Fu, Estelle Meslin, V. Oison
An effective vacancy migration energy of around 0.83 eV has been obtained, in very good agreement with 0.83 ± 0.09 eV found by fitting thermal He desorption experimental data [6], which is indeed higher than the value for high purity iron from experiments (0.55 eV) and from DFT calculations (0.67 eV)[7].
(iv) In view of experimental evidence on the trapping of vacancies in vacancy-carbon complexes and the reduction of vacancy mobility, we adopt, by simplicity, the extreme case where all the VCn complexes are immobile.
At high temperatures, all the curves coincide with that of carbon-free case, whereas at intermediate and low temperatures, the effective diffusion coefficients decrease with increasing carbon content confirming the strong reduction of vacancy mobility in presence of C.
Online since: July 2011
Authors: Chun Bao Sun, Pei Qian Dou
In arid regions, reclaimed water reuse to the highly water consuming mining industry is an important way to use water resources efficiently and reduce mining process costs. reclaimed water was first reused to floatation and its techno-economic data is stable and advanced, which protect our environment and water resources, at the same time, reduce water-cost efficiently.
Testing all the pathogens is unrealistic, E.coli or faecal coliforms became the primary indicator for faecal pollution at the time, because the appearance of E.coli or faecal coliforms means faecal pollution from animal and human, and indicates the appearance of other pathogens, so the reduction of E.coli concentration reflects the decrease of pathogens indirectly, coliform monitoring being rapid, inexpensive, and easy to perform proved effective[14,15].
Validity of the indicator organismparadigm for pathogen reduction in reclaimed water and public health protection..
Online since: May 2004
Authors: Kozo Ishizaki, Koji Matsumaru, K. Jodan
After a volume reduction of 10000 mm3 in the dresser, a GS matrix removal of 50 µm in z was obtained (A GS volume reduction was 2.5 mm3).
Peak values are obtained in a probability function, Weibulle function, fitted with experimental data.
Online since: April 2010
Authors: Gabriel Ferro
In fact, reduction of the final curvature is the source of the latest advances on this heteroepitaxial system.
Paradoxically, work on 3C-SiC/Si bow reduction may mainly benefit a concurrent wide bandgap semi-conductor, namely GaN.
Chase, Journal of Physical and Chemical Reference Data. 4ème ed.; NIST-JANAF Thermochemical Tables: 1998; Vol.
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