Ultra-fast amorphization of crystalline alloys by ultrasonic vibrations

Li, Luyao; Lyu, G.J.; Li, Hongzhen; Fan, Caitao; Wen, Wenxin; Lin, Hong‐Ji; Huang, Bo; Sohrabi, S.; Ren, Shuai; Liang, Xiong; Wang, Yun-Jiang; Ma, Jiang

doi:10.1016/j.jmst.2022.09.028

Cited by 21 publications

(9 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Sonification causes rapid pressure build-up in the sample followed by relaxation. The concentration of the amorphous phase increases with the number of sonification cycles, reaching 52% after 120 cycles [230]. The high-resolution TEM images show the co-existence of crystalline and amorphous domains [229,230].…”

Section: Amorphization Process In Ferroelectric-piezoelectric Catalystsmentioning

confidence: 96%

“…The concentration of the amorphous phase increases with the number of sonification cycles, reaching 52% after 120 cycles [230]. The high-resolution TEM images show the co-existence of crystalline and amorphous domains [229,230]. At low sonification cycles, the amorphous phase appears to be the continuous phase, which then reverses as the number of cycles are increased [229,230].…”

Section: Amorphization Process In Ferroelectric-piezoelectric Catalystsmentioning

confidence: 99%

“…The amorphization techniques are not conducive to industrial-scale production as these techniques require high pressures and temperatures. Alternatively, in small-scale operations, medium to high-energy sources can be used at atmospheric conditions [229][230][231]. Fan et al [229] and Li et al [230] use pulsatile ultrasound (frequency 20 kHz) at an energy level of 2-60 kJ/cm 2 from a sonotrode.…”

Section: Amorphization Process In Ferroelectric-piezoelectric Catalystsmentioning

confidence: 99%

“…Alternatively, in small-scale operations, medium to high-energy sources can be used at atmospheric conditions [229][230][231]. Fan et al [229] and Li et al [230] use pulsatile ultrasound (frequency 20 kHz) at an energy level of 2-60 kJ/cm 2 from a sonotrode. Sonification causes rapid pressure build-up in the sample followed by relaxation.…”

Section: Amorphization Process In Ferroelectric-piezoelectric Catalystsmentioning

confidence: 99%

See 3 more Smart Citations

Hydrogen, Ammonia and Symbiotic/Smart Fertilizer Production Using Renewable Feedstock and CO2 Utilization through Catalytic Processes and Nonthermal Plasma with Novel Catalysts and In Situ Reactive Separation: A Roadmap for Sustainable and Innovation-Based Technology

Akay

2023

Catalysts

View full text Add to dashboard Cite

This multi-disciplinary paper aims to provide a roadmap for the development of an integrated, process-intensified technology for the production of H2, NH3 and NH3-based symbiotic/smart fertilizers (referred to as target products) from renewable feedstock with CO2 sequestration and utilization while addressing environmental issues relating to the emerging Food, Energy and Water shortages as a result of global warming. The paper also discloses several novel processes, reactors and catalysts. In addition to the process intensification character of the processes used and reactors designed in this study, they also deliver novel or superior products so as to lower both capital and processing costs. The critical elements of the proposed technology in the sustainable production of the target products are examined under three-sections: (1) Materials: They include natural or synthetic porous water absorbents for NH3 sequestration and symbiotic and smart fertilizers (S-fertilizers), synthesis of plasma interactive supported catalysts including supported piezoelectric catalysts, supported high-entropy catalysts, plasma generating-chemical looping and natural catalysts and catalysts based on quantum effects in plasma. Their performance in NH3 synthesis and CO2 conversion to CO as well as the direct conversion of syngas to NH3 and NH3—fertilizers are evaluated, and their mechanisms investigated. The plasma-generating chemical-looping catalysts (Catalysts, 2020, 10, 152; and 2016, 6, 80) were further modified to obtain a highly active piezoelectric catalyst with high levels of chemical and morphological heterogeneity. In particular, the mechanism of structure formation in the catalysts BaTi1−rMrO3−x−y{#}xNz and M3O4−x−y{#}xNz/Si = X was studied. Here, z = 2y/3, {#} represents an oxygen vacancy and M is a transition metal catalyst. (2) Intensified processes: They include, multi-oxidant (air, oxygen, CO2 and water) fueled catalytic biomass/waste gasification for the generation of hydrogen-enriched syngas (H2, CO, CO2, CH4, N2); plasma enhanced syngas cleaning with ca. 99% tar removal; direct syngas-to-NH3 based fertilizer conversion using catalytic plasma with CO2 sequestration and microwave energized packed bed flow reactors with in situ reactive separation; CO2 conversion to CO with BaTiO3−x{#}x or biochar to achieve in situ O2 sequestration leading to higher CO2 conversion, biochar upgrading for agricultural applications; NH3 sequestration with CO2 and urea synthesis. (3) Reactors: Several patented process-intensified novel reactors were described and utilized. They are all based on the Multi-Reaction Zone Reactor (M-RZR) concept and include, a multi-oxidant gasifier, syngas cleaning reactor, NH3 and fertilizer production reactors with in situ NH3 sequestration with mineral acids or CO2. The approach adopted for the design of the critical reactors is to use the critical materials (including natural catalysts and soil additives) in order to enhance intensified H2 and NH3 production. Ultimately, they become an essential part of the S-fertilizer system, providing efficient fertilizer use and enhanced crop yield, especially under water and nutrient stress. These critical processes and reactors are based on a process intensification philosophy where critical materials are utilized in the acceleration of the reactions including NH3 production and carbon dioxide reduction. When compared with the current NH3 production technology (Haber–Bosch process), the proposed technology achieves higher ammonia conversion at much lower temperatures and atmospheric pressure while eliminating the costly NH3 separation process through in situ reactive separation, which results in the production of S-fertilizers or H2 or urea precursor (ammonium carbamate). As such, the cost of NH3-based S-fertilizers can become competitive with small-scale distributed production platforms compared with the Haber–Bosch fertilizers.

show abstract

Section: Amorphization Process In Ferroelectric-piezoelectric Catalystsmentioning

confidence: 96%

Section: Amorphization Process In Ferroelectric-piezoelectric Catalystsmentioning

confidence: 99%

Section: Amorphization Process In Ferroelectric-piezoelectric Catalystsmentioning

confidence: 99%

Section: Amorphization Process In Ferroelectric-piezoelectric Catalystsmentioning

confidence: 99%

See 2 more Smart Citations

Hydrogen, Ammonia and Symbiotic/Smart Fertilizer Production Using Renewable Feedstock and CO2 Utilization through Catalytic Processes and Nonthermal Plasma with Novel Catalysts and In Situ Reactive Separation: A Roadmap for Sustainable and Innovation-Based Technology

Akay

2023

Catalysts

View full text Add to dashboard Cite

show abstract

“…[7] Additionally, ultrasonic vibrations induce the amorphization of crystalline alloys at grain boundaries (GBs) at low temperatures and pressures. [8] These unusual phenomena have broadened the applications of nanoparticles in various fields, including energy storage, [9] catalysis, [10] biomedical science, [11] and electromagnetic (EM) shielding. [12] Given that these phenomena are related to defect formation and phase transition, exploring the potential of USF will be of significance in modulating the EM properties of nanoparticles to realize their application in EM wave (EMW) absorption.…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic Field Induces Better Crystallinity and Abundant Defects at Grain Boundaries to Develop CuS Electromagnetic Wave Absorber

et al. 2023

View full text Add to dashboard Cite

Ultrasonic field (USF) is widely used to regulate the intrinsic properties of materials that have not been applied in electromagnetic wave (EMW) absorption. One reason is that the lack of a response mechanism for the materials to USF hinders the expansion of their EMW absorption performance. Therefore, to address this issue, a series of CuS nanoparticles with diverse anions were constructed in the presence or absence of USF. The ultrasonic‐induced cavitation effect can significantly promote CuS crystallization and lead to the accumulation of S defects at the grain boundaries (GBs). Furthermore, the S defects at the GBs were easily oriented and arranged, allowing the polarization relaxation retention to be maintained at 10 wt.%. Consequently, the CuS with a nitrate precursor under USF showed an optimum effective absorption bandwidth (EAB) of 10.24 GHz at a thickness of 3.5 mm, which was 228.6% more than that without the USF. CuS with a chloride precursor also achieved an EAB of 3.92 GHz, even at a considerably low filler ratio. Thus, our study demonstrates the response mechanism of diverse anions to the USF for the first time and provides a novel technique to optimize the EMW absorption performance of semiconductors.This article is protected by copyright. All rights reserved

show abstract

Effect of Room Temperature Ultrasonic Vibration Compression on the Microstructure Evolution and Mechanical Properties of AZ91 Alloy

Xu,

Liu,

et al. 2024

Acta Metall. Sin. (Engl. Lett.)

View full text Add to dashboard Cite

Ultra-fast amorphization of crystalline alloys by ultrasonic vibrations

Cited by 21 publications

References 52 publications

Hydrogen, Ammonia and Symbiotic/Smart Fertilizer Production Using Renewable Feedstock and CO2 Utilization through Catalytic Processes and Nonthermal Plasma with Novel Catalysts and In Situ Reactive Separation: A Roadmap for Sustainable and Innovation-Based Technology

Hydrogen, Ammonia and Symbiotic/Smart Fertilizer Production Using Renewable Feedstock and CO2 Utilization through Catalytic Processes and Nonthermal Plasma with Novel Catalysts and In Situ Reactive Separation: A Roadmap for Sustainable and Innovation-Based Technology

Ultrasonic Field Induces Better Crystallinity and Abundant Defects at Grain Boundaries to Develop CuS Electromagnetic Wave Absorber

Effect of Room Temperature Ultrasonic Vibration Compression on the Microstructure Evolution and Mechanical Properties of AZ91 Alloy

Contact Info

Product

Resources

About