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Online since: October 2013
Authors: Xiao Min Cheng, Xian Jie Yang, Jun MA, Jian Yuan Ye
Therefore, the study on the relevant thermal physical properties of the low-melting-point alloy used for high-temperature heat transfer fluid of solar thermal power generation becomes necessary.
The thermal physical properties, specific heat capacity, thermal conductivity, phase change temperature and latent heat were studied by STA, laser thermal constants measuring apparatus and DSC, etc., respectively.
After 200, 400 and 800 times thermal cycle, the samples were taken out and were studied in metallographic phase, composition and thermal physical properties, etc.
With the cycle continuing, the two affecting factors cancel out and the thermal conductivity of alloy tend towards stability.
Mei, Properties of cast aluminum alloys as thermal storage materials, Cast Met. 4 (1990) 203-206
The thermal physical properties, specific heat capacity, thermal conductivity, phase change temperature and latent heat were studied by STA, laser thermal constants measuring apparatus and DSC, etc., respectively.
After 200, 400 and 800 times thermal cycle, the samples were taken out and were studied in metallographic phase, composition and thermal physical properties, etc.
With the cycle continuing, the two affecting factors cancel out and the thermal conductivity of alloy tend towards stability.
Mei, Properties of cast aluminum alloys as thermal storage materials, Cast Met. 4 (1990) 203-206
Online since: March 2007
Authors: Xian Hui Wang, Peng Xiao, Zhi Kang Fan, Shu Hua Liang
The previous results show that the distribution of internal oxide has
significant effects on the mechanical properties, and the composites have good properties [1-4] only
when the oxide distribute in grain of copper matrix.
According to the theory of internal oxidation [5], for normal binary alloy system, when the concentration of solute is low, internal oxidation is its mainly oxidation mode, and the formed oxide is also distributed in grains, thus the properties of the composites will be improved with the increase of oxide.
With increasing the concentration of solute, the formed oxides tend to distribute along grain boundaries and they even form a continuous healing layer to prevent the process of internal oxidation, and the properties of the composites will be deteriorated with the increase of oxide.
Fig. 1 The effect of Al content on the microstructure of Cu/Al2O3 (a) 0.8%Al; (b) 1.2%Al; (c) 1.6%Al; (d) 2.0%Al Factors affecting the distribution of oxide in Cu-Al and Cu-Cr system during internal oxidation process.
The difference between the distribution of the internal oxide developed in the Cu-Cr and Cu-Al system prepared by high energy milling is mainly caused by the following factors: Difference between the solid solution mode of Cr and Al into the lattice of Cu.
According to the theory of internal oxidation [5], for normal binary alloy system, when the concentration of solute is low, internal oxidation is its mainly oxidation mode, and the formed oxide is also distributed in grains, thus the properties of the composites will be improved with the increase of oxide.
With increasing the concentration of solute, the formed oxides tend to distribute along grain boundaries and they even form a continuous healing layer to prevent the process of internal oxidation, and the properties of the composites will be deteriorated with the increase of oxide.
Fig. 1 The effect of Al content on the microstructure of Cu/Al2O3 (a) 0.8%Al; (b) 1.2%Al; (c) 1.6%Al; (d) 2.0%Al Factors affecting the distribution of oxide in Cu-Al and Cu-Cr system during internal oxidation process.
The difference between the distribution of the internal oxide developed in the Cu-Cr and Cu-Al system prepared by high energy milling is mainly caused by the following factors: Difference between the solid solution mode of Cr and Al into the lattice of Cu.
Online since: February 2022
Authors: Vladimir N. Malikov, Alexey V. Ishkov, Viktor V. Ivanaisky, Marina V. Polkovnikova
Due to differences in the values of heat input and properties of electrode materials, surfacing processes have a specific effect on the properties of coatings [5-15].
It was found that the structure of such an alloy directly affects its mechanical properties.
The influence of the obtained microstructure on the mechanical properties of the substance was determined.
Zhang, Effect of Cu addition on the microstructure and mechanical properties of AlCoCrFeNiTi0.5 solid-solution alloy, Journal of Alloys and Compounds. 466(1-2) (2008) 201-204
Liu, ffect of the overlapping factor on the microstructure and mechanical properties of pulsed Nd:YAG laser welded Ti6Al4V sheets, Materials Characterization. 93 (2014) 136-149
It was found that the structure of such an alloy directly affects its mechanical properties.
The influence of the obtained microstructure on the mechanical properties of the substance was determined.
Zhang, Effect of Cu addition on the microstructure and mechanical properties of AlCoCrFeNiTi0.5 solid-solution alloy, Journal of Alloys and Compounds. 466(1-2) (2008) 201-204
Liu, ffect of the overlapping factor on the microstructure and mechanical properties of pulsed Nd:YAG laser welded Ti6Al4V sheets, Materials Characterization. 93 (2014) 136-149
Online since: April 2019
Authors: Irina Hussainova, Masoud Taleb, 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.
Online since: February 2026
Authors: Sri Hastuty, Fatwa Khoirrun Nadhor, Muhammad Nur
Introduction
Stainless steel is used widely in various industrial applications because it has good mechanical properties and is corrosion resistant.
Corrosion of type 201 stainless steel can occur due to various factors, such as exposure to acidic or alkaline environments, high temperatures, and mechanical stress [5].
This method uses a potentiostat to understand the changes in the material surface's electrochemical properties.
Effects of Grain Size on Mechanical Properties and Work‐Hardening Behavior of AISI 304 Austenitic Stainless Steel. steel Res Int [Internet]. 2019 Oct 28; 90 (10).
Effect of welding speed on microstructures, mechanical properties and corrosion behavior of GTA-welded AISI 201 stainless steel sheets.
Corrosion of type 201 stainless steel can occur due to various factors, such as exposure to acidic or alkaline environments, high temperatures, and mechanical stress [5].
This method uses a potentiostat to understand the changes in the material surface's electrochemical properties.
Effects of Grain Size on Mechanical Properties and Work‐Hardening Behavior of AISI 304 Austenitic Stainless Steel. steel Res Int [Internet]. 2019 Oct 28; 90 (10).
Effect of welding speed on microstructures, mechanical properties and corrosion behavior of GTA-welded AISI 201 stainless steel sheets.
Online since: January 2013
Authors: Hong Wei Yan, Yang Wang, Qiang Gao, Hui Shan Lu
The Physical Properties of Coal.
The physical properties of coal are external performance of coal’s chemical composition and molecular structure.
It is determined by the factors such as coal’s raw material and its accumulation conditions, conversion process, coal rank and degree of oxidation, and including color, gloss, pink, specific gravity, bulk density, hardness, brittleness, fracture, conductivity and so on.
The physical properties of the coal can be used as a basis for preliminary evaluation of coal, and used to study the causes of coal, modification mechanism and solve the geological problems of coal seam correlation.
References [1] Dongming Huang: Mechanical Engineering.
The physical properties of coal are external performance of coal’s chemical composition and molecular structure.
It is determined by the factors such as coal’s raw material and its accumulation conditions, conversion process, coal rank and degree of oxidation, and including color, gloss, pink, specific gravity, bulk density, hardness, brittleness, fracture, conductivity and so on.
The physical properties of the coal can be used as a basis for preliminary evaluation of coal, and used to study the causes of coal, modification mechanism and solve the geological problems of coal seam correlation.
References [1] Dongming Huang: Mechanical Engineering.
Online since: January 2022
Authors: Sema Arisoy, Tansel Comoglu
This idea emphasizes the urgent need for levodopa nanoparticles with sustained drug release properties in which this study first aims based on.
Formulation parameters such as concentration of stabilizer, the molecular weight of the polymer, the ratio of polymer/drug are the key factors to obtain the desired size, PDI, and EE.
The degradation rate of PLGA depends on many factors, including the composition (e.g. lactic/glycolic acid ratio), the molecular weight of the polymer.
The rate of degradation of PLGA depends on many factors including composition (eg lactic/glycolic acid ratio), the molecular weight of the polymer.
Different parameters were evaluated for modification of A8a, A2 formulas with optimum properties.
Formulation parameters such as concentration of stabilizer, the molecular weight of the polymer, the ratio of polymer/drug are the key factors to obtain the desired size, PDI, and EE.
The degradation rate of PLGA depends on many factors, including the composition (e.g. lactic/glycolic acid ratio), the molecular weight of the polymer.
The rate of degradation of PLGA depends on many factors including composition (eg lactic/glycolic acid ratio), the molecular weight of the polymer.
Different parameters were evaluated for modification of A8a, A2 formulas with optimum properties.
Online since: September 2013
Authors: Fu Kai Hu, Lei Cheng, De Jian Zhou
In the service of OPCB, the stress in fiber is different from different embedded structures, which will affect the reliability of fiber in OPCB.
The section size of groove in OPCB can affect filler’s volume and thus affect the stress in glass fiber, which will promote the growth of micro-crack in the surface.
As time goes on, the crack may lead to fatigue fracture of glass fiber, and seriously affect the optical signal transmission.
Relevant material property is shown in Table 2.
Of course, it is obviously that thermal stress is not the only reliability factor of glass fiber on OPCB, and not only the embedded structure will affect the stress in glass fiber, further research will be done in the future.
The section size of groove in OPCB can affect filler’s volume and thus affect the stress in glass fiber, which will promote the growth of micro-crack in the surface.
As time goes on, the crack may lead to fatigue fracture of glass fiber, and seriously affect the optical signal transmission.
Relevant material property is shown in Table 2.
Of course, it is obviously that thermal stress is not the only reliability factor of glass fiber on OPCB, and not only the embedded structure will affect the stress in glass fiber, further research will be done in the future.
Online since: September 2021
Authors: Zainab Kassim Hassan, Mudhar Al-Obaidi
Whilst there have been several attempts to investigate the mechanical properties of several synthesized composite materials, few of these have analyzed the corrosion of such composite materials at different weight ratios.
There are several reasons for this, including the fact that the properties of the constituent materials are based on the interfacial phenomena [2].
The corrosion of materials, in certain key applications, remains the main concern due to several factors.
Interestingly, the agglomerations of the graphite particles around the Zn particles appear after the sintering process, and this results in a positive effect on the mechanical properties of the samples [4].
The fabrication and properties of particle reinforced cast metal matrix composites.
There are several reasons for this, including the fact that the properties of the constituent materials are based on the interfacial phenomena [2].
The corrosion of materials, in certain key applications, remains the main concern due to several factors.
Interestingly, the agglomerations of the graphite particles around the Zn particles appear after the sintering process, and this results in a positive effect on the mechanical properties of the samples [4].
The fabrication and properties of particle reinforced cast metal matrix composites.
Online since: October 2014
Authors: Feng Xie, Xiao Bao Lei, Xiu Ying Wang
The performance of coating tools is determined by coating material, substrate material, coating method, coating thickness and other factors.
So, the bonding strength of coating and substrate directly affects tools’ life.
There are many factors affecting the bonding strength of coating and substrate, such as pretreatment condition on substrate surface, spray distance, arc voltage and current, etc[1,2].
Periodicity and amplitude are two factors which have three levels. 5 combinations are selected for next experiments.
Mechanical Research & Application. 44 (2010) 1-4
So, the bonding strength of coating and substrate directly affects tools’ life.
There are many factors affecting the bonding strength of coating and substrate, such as pretreatment condition on substrate surface, spray distance, arc voltage and current, etc[1,2].
Periodicity and amplitude are two factors which have three levels. 5 combinations are selected for next experiments.
Mechanical Research & Application. 44 (2010) 1-4