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Impact of the aqueous corrosion induced alteration layer on mechanical properties of pharmaceutical glasses

Chemistry

Impact of the aqueous corrosion induced alteration layer on mechanical properties of pharmaceutical glasses

Q. Zheng, X. Ma, et al.

This groundbreaking study reveals how aqueous corrosion influences the mechanical properties of pharmaceutical boroaluminosilicate glasses. Discover the surprising effects of water-related species on hardness and toughness, as researchers Qiuju Zheng, Xinlin Ma, Youze Ma, Jiaxin Yu, Yuanzheng Yue, and Hongtu He unveil insights for designing more resilient pharmaceutical materials.

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Playback language: English
Abstract
This study investigates the impact of aqueous corrosion on the mechanical properties of pharmaceutical boroaluminosilicate (BAS) glasses. Prolonged corrosion increases the alteration layer (AL) thickness, leading to decreased nanohardness, reduced modulus, nanowear resistance, and Vickers hardness due to water-related species in the AL. However, the corrosion-induced "silica-like" structure within the AL enhances subsurface densification during nanoindentation and nanowear, thereby improving fracture toughness. The correlation between water content in the AL and mechanical properties is established, providing insights for designing tougher pharmaceutical glasses.
Publisher
npj Materials Degradation
Published On
Feb 03, 2024
Authors
Qiuju Zheng, Xinlin Ma, Youze Ma, Jiaxin Yu, Yuanzheng Yue, Hongtu He
Tags
aqueous corrosion
mechanical properties
boroaluminosilicate glasses
alteration layer
nanohardness
pharmaceutical materials
fracture toughness

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