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Online since: April 2014
Authors: Hamid A. Al-Falahi
Two types of additives have been dedicated as promoting factors.
There has been a great effort to synthesize graphite with specific properties at as low temperature as possible by using catalytic graphitization.
YI Shoujunet al. found that the praseodymium content (15wt.%) and the heat-treatment temperature at 2400˚C were two important factors on the catalytic graphitization of furan resin carbon [18].
The results showed that La2O3 promoted the formation of more perfect and larger crystallites, and improved the electrical/mechanical properties of carbon/carbon composites [19]. 2.
The results show that, the HTT and the large of Ni particles also affect the structural components formed on heating at 1400˚C.
There has been a great effort to synthesize graphite with specific properties at as low temperature as possible by using catalytic graphitization.
YI Shoujunet al. found that the praseodymium content (15wt.%) and the heat-treatment temperature at 2400˚C were two important factors on the catalytic graphitization of furan resin carbon [18].
The results showed that La2O3 promoted the formation of more perfect and larger crystallites, and improved the electrical/mechanical properties of carbon/carbon composites [19]. 2.
The results show that, the HTT and the large of Ni particles also affect the structural components formed on heating at 1400˚C.
Online since: September 2014
Authors: Huai Zhi Su, Zhen Dong Fan, Yu Zhi Hu
This is because the material properties of the dam and dam abutment rock mechanical parameters will change with the passage of time.
The material properties of the dam and dam abutment rock mechanical parameters will change with the passage of time.
We take four pressure factors, expressed as , , and .
We take four temperature factors, expressed as , , and .
We take two aging factors, expressed as and .
The material properties of the dam and dam abutment rock mechanical parameters will change with the passage of time.
We take four pressure factors, expressed as , , and .
We take four temperature factors, expressed as , , and .
We take two aging factors, expressed as and .
Online since: November 2006
Authors: Paulo A.P. Wendhausen, Ricardo Machado, André L. Slaviero, Aline Silva
In these components, as
higher the material density better are the magnetic properties that are important to their proper
functioning.
The densification will depend on many factors of the processing parameters and powder characteristics (morphology, average size, surface area, and chemical composition).
With the samples were analysed: - Density, as it could change the magnetic properties; - Quantity of carbon to verify if the debinder was carried through successfully as the presence of the carbon could affect the magnetic properties; - Hardness as the alloy to the specific function needs to have a minimal hardness of 84HRb.
[4] SORESCUA, M.; GRABIASA, A., Structural and Magnetic Properties of Fe50Co50 System, Institute of Electronics Materials Technology, Poland, 2001. [5] SOURMAIL, T., Near equiatomic FeCo alloys: constitution, mechanical and magnetic properties, Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, 2003
[6] SUNDAR, R.S.; DEEVI, S.C.; Influence of alloying elements on the mechanical properties of FeCo-V alloys, Chrysalis Technologies Incorporated, Richmond, VA, USA [7] TORRES.
The densification will depend on many factors of the processing parameters and powder characteristics (morphology, average size, surface area, and chemical composition).
With the samples were analysed: - Density, as it could change the magnetic properties; - Quantity of carbon to verify if the debinder was carried through successfully as the presence of the carbon could affect the magnetic properties; - Hardness as the alloy to the specific function needs to have a minimal hardness of 84HRb.
[4] SORESCUA, M.; GRABIASA, A., Structural and Magnetic Properties of Fe50Co50 System, Institute of Electronics Materials Technology, Poland, 2001. [5] SOURMAIL, T., Near equiatomic FeCo alloys: constitution, mechanical and magnetic properties, Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, 2003
[6] SUNDAR, R.S.; DEEVI, S.C.; Influence of alloying elements on the mechanical properties of FeCo-V alloys, Chrysalis Technologies Incorporated, Richmond, VA, USA [7] TORRES.
Online since: April 2019
Authors: Masoud Taleb, Irina Hussainova, Roman Ivanov
Thus, cathode reactions are rate limiting factor which makes it highly desirable to develop and optimize high capacity cathode materials for rechargeable lithium batteries.
Sulfur is a promising cathode material due to its unique physical and chemical properties.
These limiting factors cause low specific capacity, low energy efficiency and less life cycle.
Sample designation Areal capacity [mAh/cm2] Cycle Sulfur loading amount [mg/cm2] Reference 1 N,S-co-doped graphene sponge 3.77 100 4.6 [11] 2 CNT/S 2.78 500 3.7 [12] 3 CNT (free standing electrode) 4.41 150 6.3 [13] 4 AFC-S 5.33 80 6.5 [14] 5 ACC-S/1M LiNTf2 1.05 50 1.27 [15] 6 CC-S6 3.2 200 6 [16] 7 ANFC400/S 7.14 50 0.7 This work These results suggested that the graphene layers and sulfur particles are two important factors to maintain the higher charge capacitance, longer cycle life time and electrochemical properties.
Demir-Cakan, Factors affecting the proper functioning of a 3Ah Li-S pouch cell, J.
Sulfur is a promising cathode material due to its unique physical and chemical properties.
These limiting factors cause low specific capacity, low energy efficiency and less life cycle.
Sample designation Areal capacity [mAh/cm2] Cycle Sulfur loading amount [mg/cm2] Reference 1 N,S-co-doped graphene sponge 3.77 100 4.6 [11] 2 CNT/S 2.78 500 3.7 [12] 3 CNT (free standing electrode) 4.41 150 6.3 [13] 4 AFC-S 5.33 80 6.5 [14] 5 ACC-S/1M LiNTf2 1.05 50 1.27 [15] 6 CC-S6 3.2 200 6 [16] 7 ANFC400/S 7.14 50 0.7 This work These results suggested that the graphene layers and sulfur particles are two important factors to maintain the higher charge capacitance, longer cycle life time and electrochemical properties.
Demir-Cakan, Factors affecting the proper functioning of a 3Ah Li-S pouch cell, J.
Orientation Evolution and Nucleation Mechanism of UFG-Copper Prepared by SD-AARB with Heat Treatment
Online since: October 2010
Authors: Jun Li Wang, Qing Nan Shi
UFG
copper strip has also been paid a great attention due to its excellent physical properties[1-3].
Textures are important factors influencing the properties of materials, of which the development in the prepared materials should be got a better understood.
As it is known, texture development in materials is heavily affected by the components and the properties of materials, deformations, and annealing process[11-12].Also, there exists a relationship among texture development, nucleation in recrystallization and the growth of the nucleation.
The orientation of grains had the advantage of these two factors will give priority to the formation and growing up.
Hansen: Materials Science and Engineering A, Structural Materials: Properties, Microstructure and Processing Vol.340 (2003) No.1-2, p. 265-271
Textures are important factors influencing the properties of materials, of which the development in the prepared materials should be got a better understood.
As it is known, texture development in materials is heavily affected by the components and the properties of materials, deformations, and annealing process[11-12].Also, there exists a relationship among texture development, nucleation in recrystallization and the growth of the nucleation.
The orientation of grains had the advantage of these two factors will give priority to the formation and growing up.
Hansen: Materials Science and Engineering A, Structural Materials: Properties, Microstructure and Processing Vol.340 (2003) No.1-2, p. 265-271
Online since: August 2017
Authors: Marcel Kuruc, Martin Necpal, Peter Pokorný
Thermal properties of the tool material are Thermal conductivity 59 W.m-1K-1 and Heat Capacity 15 J.m-3K-1.
(a) (b) Figure 3 Thermal properties of machined material, a) heat capacity b) thermal conductivity Workpiece simulation model was set up as curved.
In the simulation process, the tool properties are defined as elastic.
Elastic properties of the material tool for this analyses are Young`s modulus 650 GPa and Poisson`s ratio 0.25.
Feed rate was the most significant factor affecting the maximum Effective Stress as are listed in Tab. 2.
(a) (b) Figure 3 Thermal properties of machined material, a) heat capacity b) thermal conductivity Workpiece simulation model was set up as curved.
In the simulation process, the tool properties are defined as elastic.
Elastic properties of the material tool for this analyses are Young`s modulus 650 GPa and Poisson`s ratio 0.25.
Feed rate was the most significant factor affecting the maximum Effective Stress as are listed in Tab. 2.
Online since: July 2015
Authors: Peter Hope, Janet Hope
As EPD layers become thinner, factors such as substrate surface structure and wettability become more critical.
Principle electrochemical phenomena affecting conductive aqueous systems are these: · Electrolytic gas generation at active electrode surfaces with derived pH gradients
Another significant factor is surface tension.
Critical substrate factors are: • Composition
· Some metals, notably aluminium, magnesium, titanium and ‘stainless steel’ form natural oxide barrier layers on their surfaces in air (passivation) - which can impart semiconductor properties
Principle electrochemical phenomena affecting conductive aqueous systems are these: · Electrolytic gas generation at active electrode surfaces with derived pH gradients
Another significant factor is surface tension.
Critical substrate factors are: • Composition
· Some metals, notably aluminium, magnesium, titanium and ‘stainless steel’ form natural oxide barrier layers on their surfaces in air (passivation) - which can impart semiconductor properties
Online since: February 2014
Authors: Li Ya Li, Yi Cheng Ge
Those superior properties contribute to the close friction force of different components and excellent tribological behavior.
They are effective in the different types of seal ringes, since they preserve their mechanical and thermal properties even at high temperatures (over 2000 oC).
During wear test, the status of worn surface of C/C composite is the main factor to control the real contract areas between the couples and affect the tribology behavior [10].
The properties are listed in Table 1.
Those superior properties contribute to the close friction force of different components and excellent tribological behavior.
They are effective in the different types of seal ringes, since they preserve their mechanical and thermal properties even at high temperatures (over 2000 oC).
During wear test, the status of worn surface of C/C composite is the main factor to control the real contract areas between the couples and affect the tribology behavior [10].
The properties are listed in Table 1.
Those superior properties contribute to the close friction force of different components and excellent tribological behavior.
Online since: June 2025
Authors: Jiang Andi, Xue Xing Ding, Da Peng Yan, Chao Jun Deng, Zhi Hai Yang
Moreover, investigations into material properties, microscopic morphology, and their collective impact on sealing performance remain limited.
(3) The physical properties of both solids and fluids remain constant under operational conditions, ignoring the effects of temperature, pressure, and other external factors
The simulation employed two typical sealing media - water and nitrogen, whose fluid properties are presented in Table 2.
This is primarily due to the differences in the physical properties of the two sealing media.
Effect of surface topography on contact property of the end face for mechanical seal, Applied Mechanics and Materials. 419(2013) 292-298
(3) The physical properties of both solids and fluids remain constant under operational conditions, ignoring the effects of temperature, pressure, and other external factors
The simulation employed two typical sealing media - water and nitrogen, whose fluid properties are presented in Table 2.
This is primarily due to the differences in the physical properties of the two sealing media.
Effect of surface topography on contact property of the end face for mechanical seal, Applied Mechanics and Materials. 419(2013) 292-298
Online since: March 2025
Authors: Dmytro G. Savvakin, Pavlo E. Markovsky, Orest M. Ivasishin, Sergey V. Prikhodko, Denis Oryshych, Oleksandr Stasiuk
This issue requires more economical production and improved protective properties of titanium-based materials.
However, armor should not exhibit a combination of these properties over the entire portion of the structure.
As a result, the hydrogen content of the final products becomes negligible at a level that does not affect the mechanical properties.
This includes homogeneous distribution of strengthening particles, controlled residual porosity, and good integration between the layers; and such combination can deliver a sufficient mechanical properties of entire part.
Last two factors obviously resulted in composite layers with exceptionally high hardness, which are crucial for the durability and performance of the laminate structures including their anti-ballistic protective characteristics (Fig. 7).
However, armor should not exhibit a combination of these properties over the entire portion of the structure.
As a result, the hydrogen content of the final products becomes negligible at a level that does not affect the mechanical properties.
This includes homogeneous distribution of strengthening particles, controlled residual porosity, and good integration between the layers; and such combination can deliver a sufficient mechanical properties of entire part.
Last two factors obviously resulted in composite layers with exceptionally high hardness, which are crucial for the durability and performance of the laminate structures including their anti-ballistic protective characteristics (Fig. 7).