A5014086269- Electrocatalysts for Energy Conversion
- Microstructure and Mechanical Properties of Steels
- High Entropy Alloys Studies
- Aluminum Alloys Composites Properties
- Hydrogen embrittlement and corrosion behaviors in metals
- High Temperature Alloys and Creep
- High-Temperature Coating Behaviors
- Metal and Thin Film Mechanics
- Magnesium Alloys: Properties and Applications
- Additive Manufacturing Materials and Processes
- Metallurgical and Alloy Processes
- Metallic Glasses and Amorphous Alloys
- Corrosion Behavior and Inhibition
- Electrochemical Analysis and Applications
- Aluminum Alloy Microstructure Properties
- Boron and Carbon Nanomaterials Research
- Advanced battery technologies research
- Fuel Cells and Related Materials
- Advanced materials and composites
- Metal Alloys Wear and Properties
- Thermal and Kinetic Analysis
- Glass properties and applications
- Metallurgy and Material Forming
- Advanced Photocatalysis Techniques
- MXene and MAX Phase Materials
North University of China
2022-2025
Large eutectic carbides presenting in the matrix deteriorate mechanical properties of high carbon martensitic stainless steel. In present work, nitrogen-alloyed steel with different C/N ratios were designed by partial substitution C N 9Cr18Mo, and their microstructure investigated. The results show that, increasing content up to 0.15 wt.% experimental steel, quantity size decrease; net-work are gradually eliminated. all steels is composed lath martensite, twin martensite M23C6 carbides. With...
The precise forming process with fine-grain strengthening method of magnesium alloy is a common technical problem that needs to be urgently addressed for lightweight application. In this paper, multi-angular extrusion integrating severe plastic deformation (SPD) technique and hot was proposed manufacture the plate AZ80 alloy. Shear path introduced via variable section secondary angle mold cavity. unified internal state (ISV) based finite element (FE) model established simulate process....
The precipitation and transformation of carbides in steel are gaining more interest since they closely related to the properties steel. Herein, during tempering 7Cr14 martensitic stainless subjected high‐temperature solution treatment (HTST) investigated. results indicate that M 3 C (300–333 °C) 23 6 (612–645 occurs HTST effective activation energies 120 ± 7 272 13 kJ mol −1 , respectively. processes dominated by Cr atomic diffusion, Moreover, it is found two occur with increasing...
Exploring efficient, low-cost electrocatalysts is critical for improving the efficiency of water splitting reactions. Noble-metal-based oxides exhibit high activities in oxygen evolution reaction (OER). However, their cost and lack natural resources hinder practical application. Therefore, this study, we successfully synthesized an FeCoNiMgB high-entropy boride powder via a facile chemical reduction method use as OER catalyst alkaline medium. The powder, with ultrathin fluffy cotton...
The microstructure evolution and corrosion behavior of alloy 028 after solution treatment at 1100 °C aging the temperatures from 670 to 770 were systematically investigated. Experimental results indicate that quantities M23C6 carbides σ phase gradually increase as temperature increases. is evaluated by potentiodynamic polarization tests electrochemical impedance spectroscopy measurements in FeCl3 solution. potential (Ecorr) decreases 499 mV 349 mV, self-corrosion current (Icorr) increases...
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Precipitation strengthening plays a vital role in enhancing the mechanical properties of metallic materials, typically achieved through heat treatment. However, deformation-induced precipitation (DIP) multicomponent alloys (MAs) without assistance annealing is rarely reported, owing to their inherent high entropy and sluggish diffusion effects. This work reveals significant formation nanoscale microscale precipitates dual-phase Fe49.3Co23Ni23C0.85Mn1Si2.85 MA triggered by surface severe...
It is very important to explore efficient and inexpensive electrocatalysts improve the efficiency of water splitting energy storage. In this work, we successfully synthesize FeCoNiMgB no-noble high entropy boride powder via a facile chemical-reduction method OER in alkaline medium. Theultra-thin fluffy cotton structure exhibits excellent catalytic performance with an overpotential 268 mV at current density 10 mA/cm2, ultra-low Tafel slope 42.9 mV/dec medium solution, which superior FeCoNiB,...
It is very important to explore efficient and inexpensive electrocatalysts improve the efficiency of water splitting energy storage. In this work, we successfully synthesize FeCoNiMgB no-noble high entropy boride powder via a facile chemical-reduction method for oxygen evolution reaction (OER) in alkaline medium. Theultra-thin fluffy cotton structure exhibits excellent OER catalytic performance with an overpotential 268 mV at current density 10 mA/cm2, ultra-low Tafel slope 42.9 mV/dec...
The design of innovative method for catalytic nanomaterials is crucial to the realization environmental conversion and storage technologies. In this study, a frame structure FeCoNiMgB/NF high entropy boride alloy fabricated by new via in-situ grown powder on nickel foam (NF). as-prepared presents more excellent OER electrocatalytic performance than pure FeCoNiMgB or other counterparts, exhibits 183 mV low overpotential at current density 10 mA cm−2 34 dec−1 Tafel slope in 1 M KOH, as well...
The precipitation and transformation of carbides in steel are scientific technological interest since the closely related to properties steel. However, high carbon martensitic stainless during tempering still poorly understood. Here, 7Cr14 subjected temperature solution treatment investigated by differential scanning calorimetry (DSC) transmission electron microscopy (TEM). Two exothermic reactions observed DSC curves, which correspond M 3 C 2 (300~333°C) 23 6 (612~645°C) carbides. effective...
The precipitation and transformation of carbides in steel are scientific technological interest since the closely related to properties steel. However, high carbon martensitic stainless during tempering still poorly understood. Here, 7Cr14 subjected temperature solution treatment investigated by differential scanning calorimetry (DSC) transmission electron microscopy (TEM). Two exothermic reactions observed DSC curves, which correspond M 3 C 2 (300~333°C) 23 6 (612~645°C) carbides. effective...