H2020Индивидуална стипендия2020–2022

GLASSphase · Toward Tough Glasses with Controlled Nanoscale Heterogeneities

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2020-10-01 → 2022-09-30
Финансиране от ЕС: 207 312 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Оксидните стъкла се изследват чрез контролиране на техните структури на нанониво, за да станат по-устойчиви на счупване. Това помага за създаването на здрави и прозрачни материали за електрониката, енергетиката и информационните технологии.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Toward Tough Glasses with Controlled Nanoscale Heterogeneities

Specialty glass manufacturing is annually a €30 billion industry worldwide and transparent oxide glasses are one of the most important engineering and functional material families owing to their unique features, such as tailorable physical properties, formability, and relatively low cost. However, at the same time, intrinsic brittleness continues to be their main drawback, which severely restricts many applications. Therefore, improving the mechanical properties (such as crack initiation resistance, fracture toughness, hardness, etc.,) of glasses is also crucial for addressing major challenges in consumer electronics, energy, information technology and other wide industry areas. Various extrinsic and intrinsic approaches have been attempted to improve the toughness of oxide glasses. Extrinsic techniques usually lead to a loss of transparency. In contrast, intrinsic techniques rely on the optimization of the inherent fracture resistance of the glass network by tuning their atomic structure or microstructure. The present study explored the possibility to improve the fracture toughness and damage resistance of oxide glasses through controlled nanoscale phase separation and crystallization. Ultimately such research could enable the design of tough, yet transparent oxide materials. To achieve this aim, three specific objectives are included in the GLASSphase project: (1) Enable prediction and control of the propensity for phase separation and the nano-domain size/composition (2) Understand the effect of nanoscale phase separation on glass toughness and nanoductility (3) Reveal the contribution of nanoductility to macroscopic crack propagation and fracture patterns. The project has revealed the toughening mechanism induced by heterogeneous structures and its impact on macroscopic crack propagation. It thus suggests a new route to design glasses that are tough, yet transparent.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Specialty glass manufacturing is annually a €30 billion industry worldwide and transparent oxide glasses are one of the most important engineering and functional material families owing to their unique features, such as tailorable physical properties. However, at the same time, intrinsic brittleness continues to be their main drawback, which severely restricts many applications. In the proposed project, we will explore the possibility to improve the fracture toughness and damage resistance of oxide glasses through controlled nanoscale phase separation, as the presence of inclusions can lead to crack deflection or trapping. The size of these heterogeneities needs to be small enough (<50-100 nm) to maintain transparency. To this end, we will tune the composition of calcium aluminosilicate glasses to enable controlled phase separation with respect to the size and composition of the nano-domains (Work Package 1). Then selected mechanical properties (stiffness, hardness, fracture toughness, and crack resistance) of these new glasses will be explored (Work Package 2). These experiments will be guided by a combination of atomic scale (molecular dynamics) and microstructural scale (peridynamics) simulations (Work Package 3). The project will provide the scientific breakthrough for elucidating the toughening mechanism induced by phase separation and its impact on macroscopic crack propagation.The complementary expertise of the applicant and supervisor and the research and training environment provided by the host organization (Aalborg University, Denmark) will ensure the achievement of this timely and innovative project as well as the dissemination and exploitation of the expected results. These research outputs will accelerate the design of new fracture-resistant glasses, which can be used in various fields. The applicant will emerge from the project with new skills, and the capability to launch her own research group.

Оригинален текст от CORDIS (на английски).

Участници

AALBORG UNIVERSITET · AalborgКоординаторДания