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Online since: February 2013
Authors: Pavel Koštial, Milena Kušnerová, R. Tomkowski, W. Kapłonek, P. Škubala, D. Bražina, V. Szarková, Marta Harničárová, B. Haluzíková, Krzysztof Rokosz, Jan Valíček
A number of scientific papers devoted to the issue of plastic electrodes and to the effects of blasting on the final quality of plastic electrodes over a period of 20 years is shown graphically in Figure 1.
The graph shows that the total number of papers dealing with the given topic is as follows: 78% deal with the plastic electrodes after blasting and 22% deal with identification of the surface quality of plastic electrodes after blasting.
Brown corundum F30 Maxi-Clean MC2 Black silicon carbide F22 Toughness [Mohs] 9 4 9.5 Density [kg/dm3] 1.7 0.85 1.41 Grain size [mm] 0.42-0.85 0.58-0.84 0.72-0.93 Results and discussion The plastic samples (electrodes) produced by multicomponent injection were measured by a contact profilometer Mitotuyo Surftest SJ 401 (Fig. 4a).
The graph shows that the total number of papers dealing with the given topic is as follows: 78% deal with the plastic electrodes after blasting and 22% deal with identification of the surface quality of plastic electrodes after blasting.
Brown corundum F30 Maxi-Clean MC2 Black silicon carbide F22 Toughness [Mohs] 9 4 9.5 Density [kg/dm3] 1.7 0.85 1.41 Grain size [mm] 0.42-0.85 0.58-0.84 0.72-0.93 Results and discussion The plastic samples (electrodes) produced by multicomponent injection were measured by a contact profilometer Mitotuyo Surftest SJ 401 (Fig. 4a).
Online since: December 2012
Authors: An Xi Jiang, Wei Jiang, Lin Huan Zhang, Bo Yan
Fig. 1 Preparation process of sludge activated carbon
Activation of Sludge Activated Carbon Preparation Process
The purpose of activation is to make the specific surface area of adsorbent further increased and form a large number of pore structure, finally turn it into activated carbon which has large adsorption capacity and a large number of fine pore structure.
Ce doped could inhibit grain growth in TiO2.
Ce doped could inhibit grain growth in TiO2.
Online since: June 2012
Authors: Masato Enokizono, Tsugunori Kanada, Akifumi Kutsukake, Tetsu Ikeda, Yukihito Kido
The difference is caused by the impedance difference, such as a number of turns and stray capacitance between windings.
In relation to this, it is reported that when a number of H coil winding decreases the twist of BH loop disappears [10].
Tegopolos : Comparison of Iron losses in Multiple Grain Size Iron Laminations under Sinusoidal and SPWM Excitation , Applied Electromagnetic Engineering , Vol. 670 , pp. 74-81 (2011) [5]S.
In relation to this, it is reported that when a number of H coil winding decreases the twist of BH loop disappears [10].
Tegopolos : Comparison of Iron losses in Multiple Grain Size Iron Laminations under Sinusoidal and SPWM Excitation , Applied Electromagnetic Engineering , Vol. 670 , pp. 74-81 (2011) [5]S.
Online since: October 2013
Authors: Jun Yu Wu, Xu Fang Zhang
The maximum original grain size was about 3-5 mm.
Table 2 The results of Si-Mn slag cementitious material Circulating fluidization bed slag (%) Si-Mn slag (%) Anhydrous sodium sulfate (%) Anhydrite (%) Lime (%) 3d (MPa) 7d (MPa) 28d (MPa) 78 0 4 8 10 7.94 24.48 29.52 68 10 4 8 10 11.8 38.76 54.8 58 20 4 8 10 37.7 49.62 63.34 48 30 4 8 10 50.14 65.8 75.32 38 40 4 8 10 56.38 63.58 80.68 28 50 4 8 10 65.44 69.72 78.38 18 60 4 8 10 55.22 68.78 80.46 8 70 4 8 10 58.14 59.96 85.76 0 78 4 8 10 53.92 74.12 83.82 9 70 3 8 10 56.46 65.72 82.96 10 70 2 8 10 58.02 61.38 77.38 11 70 1 8 10 46.82 54.14 70 Table 3 The ratio of Si-Mn slag cementitious material Number Circulating fluidization bed slag (%) Si-Mn slag (%) Anhydrous sodium sulfate (%) Anhydrite (%) Lime (%) 1 10 70 2 8 10 2 8 70 2 10 10 3 10 70 2 10 8 4 12 70 2 8 8 Table 4 The results of Si-Mn slag cementitious material Number Flexural strength (MPa) Compressive strength (MPa) 1d 3d 7d 28d 1d 3d 7d 28d 1 4.380 6.585 6.655 7.792 16.18 27.01 36.20 47.63 2 5.476 5.686 6.065 7.596
Table 2 The results of Si-Mn slag cementitious material Circulating fluidization bed slag (%) Si-Mn slag (%) Anhydrous sodium sulfate (%) Anhydrite (%) Lime (%) 3d (MPa) 7d (MPa) 28d (MPa) 78 0 4 8 10 7.94 24.48 29.52 68 10 4 8 10 11.8 38.76 54.8 58 20 4 8 10 37.7 49.62 63.34 48 30 4 8 10 50.14 65.8 75.32 38 40 4 8 10 56.38 63.58 80.68 28 50 4 8 10 65.44 69.72 78.38 18 60 4 8 10 55.22 68.78 80.46 8 70 4 8 10 58.14 59.96 85.76 0 78 4 8 10 53.92 74.12 83.82 9 70 3 8 10 56.46 65.72 82.96 10 70 2 8 10 58.02 61.38 77.38 11 70 1 8 10 46.82 54.14 70 Table 3 The ratio of Si-Mn slag cementitious material Number Circulating fluidization bed slag (%) Si-Mn slag (%) Anhydrous sodium sulfate (%) Anhydrite (%) Lime (%) 1 10 70 2 8 10 2 8 70 2 10 10 3 10 70 2 10 8 4 12 70 2 8 8 Table 4 The results of Si-Mn slag cementitious material Number Flexural strength (MPa) Compressive strength (MPa) 1d 3d 7d 28d 1d 3d 7d 28d 1 4.380 6.585 6.655 7.792 16.18 27.01 36.20 47.63 2 5.476 5.686 6.065 7.596
Online since: January 2015
Authors: M.A. Vysotskaya, Svetlana Rusina
However these raw materials have a number of features which technologically complicate its application.
Basic data for calculation of the generalized criterion of quality Indicator name Requirements GOST Ratio nanomodified agent and traditional mineral filler, [%] 100 80/20 70/30 60/40 50/50 40/60 30/70 conditional numbers of compositions 1 2 3 4 5 6 7 The limit of compressive strength , [МPа], 0 °С no more than 12 6.8 6.8 6.9 7.0 7.0 7.5 8.1 20 °С at least2.2 6.1 5.7 5.7 5.0 4.9 4.9 4.8 50 °С at least1.0 4.2 4.0 3.5 3.5 3.35 2.7 2.4 water saturation , [%] 1.5-4.0 0.90 0.94 1.03 1.20 1.30 1.34 2.05 swelling, [%] no more than 1 0.01 0.01 0.01 0.01 0.03 0.05 0.09 Long resistance at least 0.75 1.15 1.10 1.10 1.03 1.01 0.91 0.87 It is obvious that the nanostructured agent has considerable impact on strength characteristics of asphalt concrete in the wide range of temperatures.
As a result on the surface of grains of rubble of asphalt concrete the structured matrix system having microreinforcing effect is formed difficult.
Basic data for calculation of the generalized criterion of quality Indicator name Requirements GOST Ratio nanomodified agent and traditional mineral filler, [%] 100 80/20 70/30 60/40 50/50 40/60 30/70 conditional numbers of compositions 1 2 3 4 5 6 7 The limit of compressive strength , [МPа], 0 °С no more than 12 6.8 6.8 6.9 7.0 7.0 7.5 8.1 20 °С at least2.2 6.1 5.7 5.7 5.0 4.9 4.9 4.8 50 °С at least1.0 4.2 4.0 3.5 3.5 3.35 2.7 2.4 water saturation , [%] 1.5-4.0 0.90 0.94 1.03 1.20 1.30 1.34 2.05 swelling, [%] no more than 1 0.01 0.01 0.01 0.01 0.03 0.05 0.09 Long resistance at least 0.75 1.15 1.10 1.10 1.03 1.01 0.91 0.87 It is obvious that the nanostructured agent has considerable impact on strength characteristics of asphalt concrete in the wide range of temperatures.
As a result on the surface of grains of rubble of asphalt concrete the structured matrix system having microreinforcing effect is formed difficult.
Online since: January 2014
Authors: Carlos Maurício Fontes Vieira, Monica Castoldi Borlini Gadioli, Mariane Costalonga de Aguiar, Veronica Scarpini Candido, Wagner Souza Ribeiro, Sergio Neves Monteiro, Michelle Pereira Babisk
As a raw material, the quartzite is geologically classified as a metamorphic rock composed almost entirely of quartz ( SiO2 allotropic form ) grains.
Correia and N.F.Castro: Advantage technology for quartzite minning document - RRT-0001-00-12 – Final technical report to the Brazilian agencies FINEP/SEBRAE – PB, General Corporation Agreement, FINEP cod number 1.0.05.0048.00, ATECEL/CETEM/INSA number 042/2008.
Correia and N.F.Castro: Advantage technology for quartzite minning document - RRT-0001-00-12 – Final technical report to the Brazilian agencies FINEP/SEBRAE – PB, General Corporation Agreement, FINEP cod number 1.0.05.0048.00, ATECEL/CETEM/INSA number 042/2008.
Online since: March 2018
Authors: Uğur Aslan, Tahir Çağın
Effect of Hydrogen on Thermal and Mechanical Properties from Molecular Dynamics
To assess the influence of Hydrogen content on thermal and mechanical properties of NiAl compounds we have used the same compound models studied in pure form and developed models with the same number of metal atoms but added Hydrogen atoms randomly to interstitial sites corresponding to 1 , 2, 5, 8, 10% of the total number of metal atoms.
Cagin, Fundamental Study of Hydrogen Segregation at Vacancy and Grain Boundary in Palladium. arXiv preprint arXiv:1506.00302, 2015
Cagin, Fundamental Study of Hydrogen Segregation at Vacancy and Grain Boundary in Palladium. arXiv preprint arXiv:1506.00302, 2015
Online since: September 2019
Authors: M.O. Gushchina, E.A. Shirokina, A. Unt, R.V. Mendagaliev, Y.A. Bistrova
Fractograms of samples of selected fraction 45 -160 µm a) initial; b) secondary
There is a large number of facets with a fine-grained structure with traces of plastic deformation, which indicates the viscous nature of the fracture concerning samples made frominitial powder.
The regimes Zd.1.3-1.4 revealed low rates due to low power and a high number of defects.
The regimes Zd.1.3-1.4 revealed low rates due to low power and a high number of defects.
Online since: February 2015
Authors: Emee Marina Salleh, Zuhailawati Hussain, Sivakumar Ramakrishan
A number of industries are focusing on the development of this special Mg alloys including i. aerospace application in order to minimize emission reduction and fuel efficiency, ii. medical application due to its high biocompatibility and self-degradable in human body and iii. electronic application since it exhibits great improvement in strength, heat transfer, and ability to shield electromagnetic interference and radio frequency interference as compared with current plastic counterparts [2].
This indicated that the formation of fine crystallite which is due to the increasing number of collisions per unit time during milling process.
The reduction of pore size and its distribution at higher speed increased the contact area between grains leading to enhance densification effect, sinterability and its properties afterward.
This indicated that the formation of fine crystallite which is due to the increasing number of collisions per unit time during milling process.
The reduction of pore size and its distribution at higher speed increased the contact area between grains leading to enhance densification effect, sinterability and its properties afterward.
Online since: March 2012
Authors: Lin Hua Jiang, Jin Xia Xu, Qiao Zhu
The pore size distribution in the model is expressed by the following formula (8):
(8)
where:is the aperture;,are distribution parameters, corresponding to the number of the two peaks of pore size distribution curve.
In the model, the effective elastic modulus () is introduced by the author to calculate the macro self-shrinkage deformation: (10) Ishida [18] also carried out a number of corresponding measurement tests of autogenous shrinkage to validate the applicability of the model, the results of which show that the model can well predict the autogenous shrinkage deformation.
Modeling at scale of hydrating grains, Cement and Concrete Research. 27 (1995) 245-258
In the model, the effective elastic modulus () is introduced by the author to calculate the macro self-shrinkage deformation: (10) Ishida [18] also carried out a number of corresponding measurement tests of autogenous shrinkage to validate the applicability of the model, the results of which show that the model can well predict the autogenous shrinkage deformation.
Modeling at scale of hydrating grains, Cement and Concrete Research. 27 (1995) 245-258