Crystal grain size effects and crystallinity dynamics during supersonic particle impacts

Song, Guanyu; Hogan, Christopher J.

doi:10.1016/j.ijplas.2023.103758

Cited by 5 publications

(1 citation statement)

References 78 publications

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“…The ultrasonic vibration field-induced, ultra-high-frequency particle impact rock-breaking technology can increase the impact stress by more than 10 times, reduce the rock-breaking time from a few minutes (2-3 min) to seconds (2-4 s), and increase the rock-breaking efficiency by nearly 10 times [30]. During the particle impact process, the smaller grains of the material are easily heated, and the propagation of cracks is hindered [31]. The impact process of non-spherical particles has been studied by numerical simulation of a DEM model.…”

Section: Introductionmentioning

confidence: 99%

Enhancing CO2 Injection Efficiency: Rock-Breaking Characteristics of Particle Jet Impact in Bottom Hole

Wang,

Zhao

2024

Atmosphere

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Storing CO2 in oil and gas reservoirs offers a dual benefit: it reduces atmospheric CO2 concentration while simultaneously enhancing oil displacement efficiency and increasing crude oil production. This is achieved by injecting CO2 into producing oil and gas wells. Employing particle jet technology at the bottom of CO2 injection wells significantly expands the bottom hole diameter, thereby improving CO2 injection efficiency and storage safety. To further investigate the rock-breaking characteristics and efficiency, a finite element model for particle jet rock breaking is established by utilizing the smoothed particle hydrodynamics (SPH) method. Specifically, this new model considers the high temperature and confining pressure conditions present at the bottom hole. The dynamic response and fracturing effects of rock subjected to a particle jet are also revealed. The results indicate that particle jet impact rebound significantly influences the size of the impact crater, with the maximum first principal stress primarily concentrated on the crater’s surface. The impact creates a “v”-shaped crater on the rock surface, with both depth and volume increasing proportionally to jet inlet velocity and particle diameter. However, beyond a key particle concentration of 3%, the increase in depth and volume becomes less pronounced. Confining pressure is found to hinder particle impact rock-breaking efficiency, while high temperatures contribute to larger impact depths and breaking volumes. This research can provide theoretical support and parameter guidance for the practical application of particle impact technology in enhancing CO2 injection efficiency at the bottom hole.

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Section: Introductionmentioning

confidence: 99%

Enhancing CO2 Injection Efficiency: Rock-Breaking Characteristics of Particle Jet Impact in Bottom Hole

Wang,

Zhao

2024

Atmosphere

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Powder Aerosol Deposition and Polymers: Is There Hope for a Common Future?

Thiel,

Lienkamp

2024

Adv Eng Mater

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Polymer‐Ceramic Composites (PCC) are promising functional materials with a wide range of applications in energy technology, microelectronics and sensor technology, as protective coatings, in wastewater treatment or for biomedical purposes. Unfortunately, ceramics require high‐temperature sintering, while polymers only have a limited thermal stability. Therefore, PCC fabrication is quite complex and requires strict process control. This severely limits the efficiency and economy of the process, and the reproducibility of the desired materials properties. Powder Aerosol Deposition (PAD) is a spray coating process in which ceramic powders are accelerated by a pressure difference using a carrier gas. They are then deposited as nanocrystalline, dense coatings onto different kinds of substrates without the need for additional sintering. Current research focuses on materials obtained from PAD of ceramic powders. Yet there are also examples of mixed polymer and ceramic particles that have been successfully deposited in PAD processes. So far, much of this works does not go beyond the trial‐and‐error stage, so that a general concept for successful deposition of PCCs by PAD is not yet available. This review revisits the fundamentals of the PAD process and its most important process parameters that were studied experimentally and in‐silico. It connects these with recent work on the combination of polymers and ceramics in the PAD process in order to highlight and evaluate the future of this field from a polymer science perspective.This article is protected by copyright. All rights reserved.

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Deposition behavior of a CuZr metallic glass particle on amorphous-crystalline composites

Amigo

2025

Journal of Aerosol Science

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Crystal grain size effects and crystallinity dynamics during supersonic particle impacts

Cited by 5 publications

References 78 publications

Enhancing CO2 Injection Efficiency: Rock-Breaking Characteristics of Particle Jet Impact in Bottom Hole

Enhancing CO2 Injection Efficiency: Rock-Breaking Characteristics of Particle Jet Impact in Bottom Hole

Powder Aerosol Deposition and Polymers: Is There Hope for a Common Future?

Deposition behavior of a CuZr metallic glass particle on amorphous-crystalline composites

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