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Online since: November 2010
Authors: Pei Xin Zhang, Xiang Zhong Ren, Dong Yun Zhang, Li Zhang, Zhen Zhen Fan, Kun Liu
The structure and electrochemical properties of LiNi1/3Co1/3Mn1/3O2 were analisised by employing X-ray diffraction(XRD), scanning electron microscopy(SEM) and galvanotactic charge-discharge test.
Liquid chemical can be prepared cathode material with excellent properties, but it requires a lot of solvents and high cost of raw materials.
In this paper, to improve the electrochemical properties of the starting material, we first use chemical activation mechanical milling the raw materials, a variety of materials to achieve high uniformity of mixing and surface activation, increase the reactivity of the precursor to study the mechanochemical activation of solid phase preparation of precursor and the lithium-ion battery cathode material LiNi1/3Co1/3Mn1/3O2 process.
Results and discussion Effect of Milling methods on morphology and properties of precursor materials.
When the lithium excess, they will destroy the layered structure and deteriorate of the electrochemical properties, thus the best ratio for N is suggested to be 1.1.
Liquid chemical can be prepared cathode material with excellent properties, but it requires a lot of solvents and high cost of raw materials.
In this paper, to improve the electrochemical properties of the starting material, we first use chemical activation mechanical milling the raw materials, a variety of materials to achieve high uniformity of mixing and surface activation, increase the reactivity of the precursor to study the mechanochemical activation of solid phase preparation of precursor and the lithium-ion battery cathode material LiNi1/3Co1/3Mn1/3O2 process.
Results and discussion Effect of Milling methods on morphology and properties of precursor materials.
When the lithium excess, they will destroy the layered structure and deteriorate of the electrochemical properties, thus the best ratio for N is suggested to be 1.1.
Online since: September 2006
Authors: Hiroshi Suzuki, Shinobu Okido, K. Saito
Introduction
The residual stress distributions in components are not uniform because they have heating and
mechanical histories.
In the case of a weld, a high residual stress is induced by the heat history at the joint, and this is one factor causing fatigue and stress corrosion cracking.
This is important in order to ensure the reliability of the products, since reliability is affected by changes in the crack extension properties.
One of the factors of this difference is the residual stress distribution within the gage volume.
In the case of a weld, a high residual stress is induced by the heat history at the joint, and this is one factor causing fatigue and stress corrosion cracking.
This is important in order to ensure the reliability of the products, since reliability is affected by changes in the crack extension properties.
One of the factors of this difference is the residual stress distribution within the gage volume.
Online since: May 2011
Authors: Lei Yuan, Yu Liu, Zhong Lin Chen, Yue Liu
Pumice was selected as the catalyst in the present study due to its excellent chemical and configurable properties, such as high mechanical strength and chemical stability. pCNB, as a special indicator of ·OH, is chosen as the target organic compound due to its refractory nature to conventional chemical oxidation.
As Figure 4 indicated, temperature was a vital factor for the degradation efficiency of pCNB in the pumice-catalyzed ozonation processes.
The stability and reusability of the catalyst are important factors in catalyzed reactions for practical industrial applications, the stability of the pumice catalyst was investigated by reuse of one sample of catalyst in five successive ozonation experiments.
It was not known whether the catalytic ozonation process could affect the characteristics of pumice catalysts or not.
As Figure 4 indicated, temperature was a vital factor for the degradation efficiency of pCNB in the pumice-catalyzed ozonation processes.
The stability and reusability of the catalyst are important factors in catalyzed reactions for practical industrial applications, the stability of the pumice catalyst was investigated by reuse of one sample of catalyst in five successive ozonation experiments.
It was not known whether the catalytic ozonation process could affect the characteristics of pumice catalysts or not.
Online since: January 2026
Authors: Dmytro Rodionov
If the owner of the destroyed property is unable to remove the debris on their own, state or local authorities take care of it.
In contrast, the volume of WUD varies greatly and depends on unpredictable factors: the force of an explosion or natural disaster, building density, building height, degree of destruction, etc.
This matrix contains information on the characteristic hazardous properties of the category (e.g., for WUD-C – risk of asbestos dust release, for WUD-D – risk of explosions), necessary protective equipment for personnel, methods of processing or disposal, temporary storage measures, transportation requirements, etc.
Based on this matrix, a detailed WUD management plan is developed for the affected area.
Bardus, I.Alameddine, Disaster waste management challenges and enabling factors for strategic planning: The case of the Beirut Port explosion.
In contrast, the volume of WUD varies greatly and depends on unpredictable factors: the force of an explosion or natural disaster, building density, building height, degree of destruction, etc.
This matrix contains information on the characteristic hazardous properties of the category (e.g., for WUD-C – risk of asbestos dust release, for WUD-D – risk of explosions), necessary protective equipment for personnel, methods of processing or disposal, temporary storage measures, transportation requirements, etc.
Based on this matrix, a detailed WUD management plan is developed for the affected area.
Bardus, I.Alameddine, Disaster waste management challenges and enabling factors for strategic planning: The case of the Beirut Port explosion.
Online since: June 2013
Authors: Fabrice Schmidt, Jérémie Vignes, Jean Frédéric Dalmasso, Gilles Dusserre
This water provides to the raw material some ductile properties and thus allows it to be formed and to keep the geometry.
The understanding of the scientific links between the moisture, the rheological properties of the clay paste, and the final product (structure, aspect, mechanical properties) is fundamental to guarantee a high yield of the manufacturing process.
During the firing step, the sand forms a network, which allows to give the final mechanical properties.
Experimental setup To identify the rheological behaviour of the clay paste, we performed compression tests using an electro-mechanical testing machine, equipped with a 30 kN load cell.
The moisture affects the formability of the tile.
The understanding of the scientific links between the moisture, the rheological properties of the clay paste, and the final product (structure, aspect, mechanical properties) is fundamental to guarantee a high yield of the manufacturing process.
During the firing step, the sand forms a network, which allows to give the final mechanical properties.
Experimental setup To identify the rheological behaviour of the clay paste, we performed compression tests using an electro-mechanical testing machine, equipped with a 30 kN load cell.
The moisture affects the formability of the tile.
Online since: January 2012
Authors: Li Zeng, Dan Zhang, Jun Wang
It has the features of high mechanical integration, electrical motor construction materials and higher efficiency of drive system components.
In the mechanical system with Multi-Degree-of-Freedom movement, a Multi-Degree-of-Freedom motor can replace two or more Single-Degree of Freedom motor, which greatly simplifies the structure of mechanical systems, reduces size and weight, and eliminates the disadvantages such as free play and friction the gear drive brought etc.
In the Multi-Degree-of-Freedom device used for driving high-speed and super speed, there are mechanical (bearing) supporting wear problems.
The function of bearing significantly affects the reliability of the motor and the utilization ratio of equipment.
Collected Papers of Japanese Mechanical Society(C Edition), 63.612, (1997-8), p: 2707—2713
In the mechanical system with Multi-Degree-of-Freedom movement, a Multi-Degree-of-Freedom motor can replace two or more Single-Degree of Freedom motor, which greatly simplifies the structure of mechanical systems, reduces size and weight, and eliminates the disadvantages such as free play and friction the gear drive brought etc.
In the Multi-Degree-of-Freedom device used for driving high-speed and super speed, there are mechanical (bearing) supporting wear problems.
The function of bearing significantly affects the reliability of the motor and the utilization ratio of equipment.
Collected Papers of Japanese Mechanical Society(C Edition), 63.612, (1997-8), p: 2707—2713
Online since: May 2025
Authors: Annamária Polyákné Kovács, Marcell János Tóth
This article investigated the properties and applicability of a composite containing thermoplastic starch (TPS), coffee and straw fiber.
The development of biopolymers with improved gas barrier properties and longer shelf life is improving the quality of food packaging.
Protein-based polymers exhibit unique physical and chemical properties for film/coating formation.
The thermal and mechanical properties of starch can be improved by incorporating natural fillers, thus achieving outstanding properties in biocomposites.
The biodegradability of polymers depends on several factors, the chain length or molecular weight of the polymer, the complexity of the chemical formula and the crystallinity of the polymer.
The development of biopolymers with improved gas barrier properties and longer shelf life is improving the quality of food packaging.
Protein-based polymers exhibit unique physical and chemical properties for film/coating formation.
The thermal and mechanical properties of starch can be improved by incorporating natural fillers, thus achieving outstanding properties in biocomposites.
The biodegradability of polymers depends on several factors, the chain length or molecular weight of the polymer, the complexity of the chemical formula and the crystallinity of the polymer.
Online since: October 2010
Authors: Dun Fang Li, Cheng Yan Wang, Fei Yin, Yong Qiang Chen, Quan Ming Liu, Xiao Wu Jie
Introduction
With a wide direct band gap of 3.33eV at room temperature and a hexagonal wurtzite structure, Zinc oxide (ZnO) as the II-VI semiconductor material exhibits semiconducting, piezoelectric, pyroelectric and mechanical multiple properties, which has potential applications in many fields, such as optoelectronics, photovoltaics, catalysts, solar cells and composite materials.
The special structural character of T-ZnO may have special physical properties and interesting benefits in composite materials.
The key factors that affect the T-ZnO morphologies seem to be the oxidation conditions of zinc vapor and the nucleation of T-ZnO at elevated temperature other than the starting materials.
The special structural character of T-ZnO may have special physical properties and interesting benefits in composite materials.
The key factors that affect the T-ZnO morphologies seem to be the oxidation conditions of zinc vapor and the nucleation of T-ZnO at elevated temperature other than the starting materials.
Online since: February 2018
Authors: Wei Min Chen, Li Jun Zhang
Introduction
Due to their excellent high–temperature mechanical properties and high resistance to creep and fatigue at elevated temperatures, Ni–based superalloys have been widely used in both aviation and land–based gas turbine environments [1–3].
Compared with the conventional diffusion couple technique, diffusion multiple technique developed by Zhao et al. [11, 12] can provide much more composition profiles at a given temperature, which can be adopted for the high–throughput measurements of phase diagrams and materials properties (i.e., diffusion kinetics, thermal conductivity and hardness, and elastic modulus).
The parameter A0 is a factor depending only on crystal structure [23].
The thermodynamic factor Ф is expressed by, (3) where the chemical potential μi can be obtained from the corresponding thermodynamic descriptions.
In addition, both cross interdiffusivities and are also mainly affected by the content of component Al.
Compared with the conventional diffusion couple technique, diffusion multiple technique developed by Zhao et al. [11, 12] can provide much more composition profiles at a given temperature, which can be adopted for the high–throughput measurements of phase diagrams and materials properties (i.e., diffusion kinetics, thermal conductivity and hardness, and elastic modulus).
The parameter A0 is a factor depending only on crystal structure [23].
The thermodynamic factor Ф is expressed by, (3) where the chemical potential μi can be obtained from the corresponding thermodynamic descriptions.
In addition, both cross interdiffusivities and are also mainly affected by the content of component Al.
Online since: September 2011
Authors: Wei Dong Cao, Xin Zhuang Cui, Nai Ke Liu, Jin Qiu Ou, Cong Wang, Xiao Zheng
However, the layer above the water table is actually in unsaturated; and the moisture and tiny seepage flow significantly affects the water content of layers.
The matrix suction in unsaturated medium is important factor that controls seepage flow characteristic and mechanical properties [7, 8].
The matrix suction in unsaturated medium is important factor that controls seepage flow characteristic and mechanical properties [7, 8].