Ahuir Torres, JI, Chen, X, Mason, L, Gambron, P, Walker, DD, Yu, G, Li, H, Mishra, R, Akar, Y, Jackson, FF and Bingham, PA (2024) Study of the normal force and velocity influence on the fused silica scratching mechanisms with α-alumina grit at atomic scale via Reaxff reactive molecular dynamic simulations. International Journal of Abrasive Technology, 12 (1). pp. 37-62. ISSN 1752-2641

Text Study of the Normal Force and Velocity Influence on the Fused Silica Scratching Mechanisms with α-Alumina Grit at Atomic Scale via Reaxff Reactive Molecular Dynamic Simulations.pdf - Accepted Version Restricted to Repository staff only until 1 January 2025. Download (1MB)

Abstract

Fused silica is an optical glass employed in several industries, which is grinded and polished to obtained ultra-smooth surface by using α-alumina abrasives. The scratching testing is a powerful technique to assess the process conditions that provoke the process induced damages. Applied normal load and velocity on abrasive grain are main influential parameters under consideration. Previously studies on scratching of this glass are mainly focus on mechanical mechanisms, its chemical mechanisms have not been well analysed. In this paper, the Reaxff molecular dynamic simulation is used to study both mechanical and chemical mechanisms in scratching processes under various velocities and forces. The results reveal three distinct phenomena (penetration, penetration with dragging and dragging) in scratching processes. Under the conditions of lower force and velocity, the scratching depth presented small, and the temperature and potential energy were stable during scratching. The chemical interaction between the grain and glass appears as adhesion.

Item Type:	Article
Uncontrolled Keywords:	Molecular dynamic simulation; Optical glass; Reaxff; Abrasive scratching; α-alumina; 0910 Manufacturing Engineering; 0913 Mechanical Engineering; 0915 Interdisciplinary Engineering
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Engineering
Publisher:	Inderscience Publishers
Related URLs:	N/A
SWORD Depositor:	A Symplectic
Date Deposited:	22 Feb 2024 10:51
Last Modified:	22 Feb 2024 11:00
DOI or ID number:	10.1504/IJAT.2024.136730
URI:	https://researchonline.ljmu.ac.uk/id/eprint/20796

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