performance of mg-air battery based on az31 mg alloy sheets with different grain

Advanced Materials, Technology and Application

The mass gain of the alloy at 700, 800 and 900 C after 24 h oxidation is 0.098, 0.170, 0.360 mg/cm 2, respectively. Although all the kinetic curves are not very regular, they can be approximately considered as composed of a rapid transient-oxidation stage and a slow steady-oxidation stage.

Chapter 2 Simple Comparative Experiments Solutions

Solutions from Montgomery, D. C. (2001) Design and Analysis of Experiments, Wiley, NY 2-1 Chapter 2 Simple Comparative Experiments Solutions 2-1 The breaking strength of a fiber is required to be at least 150 psi. Past experience has indicated that the

Hydrogen embrittlement in metals

Atomic hydrogen is able to significantly reduce the ductility of metallic raw materials. This can lead to the expected malfunction of components and is generally referred to as hydrogen brittleness. The diverse and distinct susceptibilities for hydrogen embrittlement in

Electrochemical deposition of metal–organic framework

Metal–organic framework (MOF) thin films have received increasing attention for many applications, such as chemical sensors and membranes. Several techniques have been developed for the deposition of MOF films. In particular, the processing of electrochemical

Clarifying the roles of grain boundary and grain orientation

2021/1/30The uniform distribution of fine second phases can promote the discharge performance of Mg alloy anode for Mg-air battery [47,48,53,54]. In order to ignore the influences of second phases on the corrosion and discharge performances, the Mg alloys with low content of second phases should be selected as the research materials as far as possible.

Advanced Functional Materials: Vol 31, No 10

In article number 2008554, Davide Bonifazi, Stefano Casalini, Paolo Samor, and co‐workers devise chemiresistors (CRs) based on 3D networks of Au nano‐ particles (AuNPs) covalently bridged by crown ether‐derivative supramolecular receptors for highly selective K + sensing. sensing.

On high

Li–10 wt % Mg alloy (Li–10 Mg) is used as an anode material for a solid-state battery with excellent electrochemical performance and no evidence of dendrite formation during cycling. Thermal treatment of Li metal during manufacturing improves the interfacial contact between a Li metal electrode and solid electrolyte to achieve an all solid-state battery with increased performance. To

Recrystallization Microstructure Prediction of a Hot

Based on the hyperbolic sinusoidal equation that included an Arrhenius term, a constitutive model of flow stress was established for the unidirectional solidification sheet of AZ31 magnesium alloy. Furthermore, discretized by the cellular automata (CA) method, a real-time nucleation equation coupled flow stress was developed for the numerical simulation of the microstructural evolution during DRX.

Magnesium Metal Matrix Composites and Their

2020/7/29The AZ31-magnesium alloy reached its maximum capacity in less than 15 minutes and released entire hydrogen in less than 3 minutes, and its kinetic curves presented in Figure 4. It clearly shows that carbon and magnesium-based materials as composites (Mg alloys-carbon composites) produce the prominent catalytic effect for hydrogenation.

A neural network-based method for hardness and toughness prediction in heat affected zone of low-alloy steel has been investigated to evaluate the tempering effect in temper bead welding. On the basis of experimentally obtained database, the new hardness and toughness prediction system was constructed by using RBF-neural network.

Ultrasonic welding of magnetic hybrid material systems

The performance of electric sensors is continuously improving due to the demands of modern vehicles and electronic devices. Magnetic sensors are used in a wide field of applications. However, handling and mounting the typical high-performance rare earth permanent magnets are challenging due to their brittleness. A constant magnetic flux is a key property of the magnetic setup in many devices

Elucidating the effect of intermetallic compounds on the

B. Grain growth experiments The extruded alloys were subjected to annealing at temperatures between 473 K (200 C) and 773 K (500 C) for soaking times of 15, 30, 60, 120, and 240 min. Then, the samples were air cooled. Since the shape change of the

Supercapacitor electrode materials: nanostructures from 0

(a) Performance of chemically prepared rGO electrodes A variety of reducing agents have been considered to restore the graphene network and its conductivity in the GO sheets. 134–137 Hydrazine is the most commonly reported reducing agent for GO reduction.

Advanced High Energy Density Secondary Batteries with

Subsequently, novel solid polymer electrolytes based on Mg(CF 3 SO 2) 2 as a salt with high stability and safety were successfully used in a magnesium ion battery, which showed an ambient temperature conductivity of 4.42 10 −4 S cm −1, as good as that of

An Overview of Engineered Graphene‐Based Cathodes:

The effect of oxygen atoms on the electrocatalytic performance of graphene‐derived air electrodes was reported by the group of Storm, who varied the oxidation time of graphite to obtain GO sheets oxidized to different extents and reduced them either with 79

Effects of alloying addition and twin

2019/5/17Based on chemical composition detected by EDS (at%), results illustrate that enrichment of Zn elements in secondary phase particles of Mg-2Zn alloy sheets. Moreover, main component elements of secondary phase particles for ZAEX2100 alloy sheets change to Al and Mn, regardless of casting process, which reveal that the formation of other eutectic phases arise with alloying addition.

Journal of Nanoscience and Nanotechnology

Relative Volta Potentials of Intermetallics in AZ91-RE Mg Alloy After Solution and Aging Treatment Yanfang Ding, Ruiling Jia, Wei Zhang, Huixia Zhang, and Jian Hou J. Nanosci. Nanotechnol. 19, 188–193 (2019) [] [Full Text - PDF] [Purchase Article]

Journal of Nanoscience and Nanotechnology

Relative Volta Potentials of Intermetallics in AZ91-RE Mg Alloy After Solution and Aging Treatment Yanfang Ding, Ruiling Jia, Wei Zhang, Huixia Zhang, and Jian Hou J. Nanosci. Nanotechnol. 19, 188–193 (2019) [] [Full Text - PDF] [Purchase Article]

Advanced Materials, Technology and Application

The mass gain of the alloy at 700, 800 and 900 C after 24 h oxidation is 0.098, 0.170, 0.360 mg/cm 2, respectively. Although all the kinetic curves are not very regular, they can be approximately considered as composed of a rapid transient-oxidation stage and a slow steady-oxidation stage.

Performance of Mg–air battery based on AZ31 alloy sheet

2013/12/15An Mg–air battery based on the processed AZ31 alloys was prepared and the battery performance was investigated by intermittent discharge test. The intermittent discharge test indicates that Mg–air battery based on AZ31 alloy with twins exhibits preferable intermittent discharge behavior, such as a higher discharge voltage and a shorter retardation time.

Magnesium Technology 2020 Keynote Session

The Magnesium Technology 2020 symposium at the TMS 2020 Annual Meeting Exhibition will open with a session of invited presentations on Monday morning. TMS 5700 Corporate Drive Suite 750 Pittsburgh, PA 15237 1 (800) 759-4867 (U.S. and Canada only)

Friction Stir Welding of AZ31 Magnesium Alloys

Mechanical and physical properties of the AZ31 Mg alloy change with the temperature; so in the nonlinear finite element analyses, material properties were defined depending on the temperature. Tables 2 and 3 show the thermal conductivity, k and heat capacity, C p values of AZ31 Mg-alloy depending on temperature used in the thermal analyses ( Gok and Aydin, 2013, Yang et al., 2011 ).

A neural network-based method for hardness and toughness prediction in heat affected zone of low-alloy steel has been investigated to evaluate the tempering effect in temper bead welding. On the basis of experimentally obtained database, the new hardness and toughness prediction system was constructed by using RBF-neural network.

Interlayers in Resistance Spot

2021/2/8Ibrahim et al. [] analysed the fatigue performance of resistance spot-welded Al 6061-T6 alloy and SS304 of similar thicknesses of 2 mm. Al-Mg alloy was used as an interlayer of 80 m thickness. Incorporating 80% Al and 20% Mg and as observed from the Al-Mg binary phase diagram, melting would start at around 450 (^circ{rm C} ) according to the eutectic line [ 53 ].

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