Pengwan Chen
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View article: The effects of Al content on mechanical properties, thermal reaction behavior, and ignition characteristics of Al–Bi2O3 thermite
The effects of Al content on mechanical properties, thermal reaction behavior, and ignition characteristics of Al–Bi2O3 thermite Open
For thermite-based energetic structural materials (ESMs), it is a key challenge to balance safety performance and energy output. In this paper, four kinds of Al–Bi2O3 thermites with different Al contents were successfully compressed as bul…
View article: Constitutive models and applications of 18Ni350 maraging steel under different temperatures and strain conditions
Constitutive models and applications of 18Ni350 maraging steel under different temperatures and strain conditions Open
This paper explores the constitutive model of 18Ni350 maraging steel under various temperatures and strain rates, which is crucial for crashworthiness and impact load applications. Systematic mechanical property evaluations were conducted …
View article: Enhancing Fracture Assessment of Pipe Girth Welds with Root Cracks
Enhancing Fracture Assessment of Pipe Girth Welds with Root Cracks Open
Despite the widespread use of the failure assessment diagram, accurately evaluating girth weld joints with cracks remains a significant challenge within the pipeline industry, due to the mismatched strength between the parent metal and wel…
View article: Gram-scale synthesis of simple cubic phase black phosphorus via shock-induced phase transformation: Mechanistic insights and process-dependent phase control
Gram-scale synthesis of simple cubic phase black phosphorus via shock-induced phase transformation: Mechanistic insights and process-dependent phase control Open
Simple cubic black phosphorus (BP) has been recognized as a strategic material due to its exceptional structural stability under extreme conditions. In this investigation, simple cubic BP was successfully synthesized through shock-induced …
View article: Understanding the Deformation and Fracture Behavior of β−HMX Crystal and Its Polymer−Bonded Explosives with Void Defects on the Atomic Scale
Understanding the Deformation and Fracture Behavior of β−HMX Crystal and Its Polymer−Bonded Explosives with Void Defects on the Atomic Scale Open
The effect of the void defect on β−HMX−based polymer−bonded explosives (PBXs) for a comprehensive understanding of the deformation and fracture process is lacking. In this paper, the atomic scale model of the β−HMX crystal and its PBX is b…
View article: Mechanical and energy release properties of cold-sprayed nickel-aluminum energetic structural materials
Mechanical and energy release properties of cold-sprayed nickel-aluminum energetic structural materials Open
Nickel-aluminum energetic structural materials (Ni–Al ESMs) are widely applied in the defense industry due to their excellent mechanical and energy release properties. By utilizing an inert atmosphere at low temperatures, cold-spray effect…
View article: Tailoring asymmetric RuCu dual-atom electrocatalyst toward ammonia synthesis from nitrate
Tailoring asymmetric RuCu dual-atom electrocatalyst toward ammonia synthesis from nitrate Open
Atomically dispersed Ru-Cu dual-atom catalysts (DACs) with asymmetric coordination are critical for sustainable ammonia production via electrochemical nitrate reduction (NO3RR), but their rational synthesis remains challenging. Here, we re…
View article: Effect of Hydride Types on the Fracture Behavior of a Novel Zirconium Alloy Under Different Hydrogen-Charging Current Densities
Effect of Hydride Types on the Fracture Behavior of a Novel Zirconium Alloy Under Different Hydrogen-Charging Current Densities Open
Hydrogen embrittlement is a critical issue for zirconium alloys, which receives long-term attention in their applications. The formation of brittle hydrides facilitates crack initiation and propagation, thereby significantly reducing the m…
View article: A 7-Bit Vector-Sum Phase Shifter for LEO Satellite Communication in 90-Nm CMOS Process
A 7-Bit Vector-Sum Phase Shifter for LEO Satellite Communication in 90-Nm CMOS Process Open
This paper presents a 7-bit vector-sum phase shifter for low-earth-orbit satellite communication. The phase shifter consists of a differential-type quadrature all-pass filter (QAF) and an analog differential vector adder, where a matching …
View article: Preparation and Characterization of SiO2-PMMA and TiO2-SiO2-PMMA Composite Thick Films for Radiative Cooling Application
Preparation and Characterization of SiO2-PMMA and TiO2-SiO2-PMMA Composite Thick Films for Radiative Cooling Application Open
Radiative cooling, an emerging technology that reflects sunlight and emits radiation into outer space, has gained much attention due to its energy-efficient nature and broad applicability in buildings, photovoltaic cells, and vehicles. Thi…
View article: Tailoring Asymmetric RuCu Dual-Atom Electrocatalyst toward Ammonia Synthesis from Nitrate
Tailoring Asymmetric RuCu Dual-Atom Electrocatalyst toward Ammonia Synthesis from Nitrate Open
Atomically dispersed dual-atom catalysts (DACs) with asymmetric coordination are pivotal for enhancing economic efficiency and sustainable development in the electrochemical nitrate reduction reaction (NO3RR) to produce ammonia. However, r…
View article: Atomistic Insights into Impact-Induced Energy Release and Deformation of Core–Shell-Structured Ni/Al Nanoparticle in an Oxygen Environment
Atomistic Insights into Impact-Induced Energy Release and Deformation of Core–Shell-Structured Ni/Al Nanoparticle in an Oxygen Environment Open
In actual atmospheric environments, Ni/Al composites subjected to high-velocity impact will undergo both intermetallic reaction and oxidative combustion simultaneously, and the coupling of mechanical and multiple chemical processes leads t…
View article: The propagation behavior of reaction wave for Ni/Al clad particle composites under shock loading
The propagation behavior of reaction wave for Ni/Al clad particle composites under shock loading Open
Prior studies indicate that the reaction wave can propagate from the impact surface, but the possibility and the influencing factors of the reaction wave formation are still unclear. This work investigates the propagation behavior of the s…
View article: Multiscale thermodynamics of Ni/Al energetic structural materials under shock
Multiscale thermodynamics of Ni/Al energetic structural materials under shock Open
The influence of microstructure on the response of energetic structural materials (ESMs) under shock conditions remains inadequately quantified, and the energy release process is not thoroughly understood. In this work, taking the classica…