Indentation crack initiation behavior of vitreous silica glasses containing different hydroxyl concentration

Wilantewicz, Trevor E.; Varner, James R.

doi:10.1016/j.jnoncrysol.2007.08.059

Cited by 4 publications

(2 citation statements)

References 11 publications

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“…In addition, they found that the remaining strengths could also be higher in the modified glasses. This complexity has been illustrated recently in a very striking manner by Wilantewicz 46 . He found that not only were crack characteristics different but also the types of cracks and the order of their appearance varied with a number of the indenting parameters.…”

Section: Damagementioning

confidence: 99%

The Strength of Silicate Glasses: What Do We Know, What Do We Need to Know?

Kurkjian

Gupta

Brow

2010

Int J of Appl Glass Sci

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In the last few years, there has been increased interest in methods to improve the practical strength of inorganic glasses. During this same time period, new theoretical and experimental techniques have appeared. In this paper, we discuss this interest and indicate how and where these new techniques may help us to achieve our objective to increase the practical strength of glass. Our ability to measure the intrinsic inert strength of glass fibers as well as the development of stresses around indentations and scratches now allows us to attack these two important issues experimentally. Likewise, major advances have been made in techniques for the modeling glass structure and mechanical properties. The advances in these three areas give us indications of how changes in glass composition and processing can influence the final strength as well as its robustness.

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Section: Damagementioning

confidence: 99%

The Strength of Silicate Glasses: What Do We Know, What Do We Need to Know?

Kurkjian

Gupta

Brow

2010

Int J of Appl Glass Sci

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“…However, with the increased SiO 2 content in the glass spheres, the nickel flowers grow increasingly thicker on the glass spheres. A possible reason for this is that the variation of the component of the glass spheres results in the change of their surface properties, which may effect the adsorption of Pd seeds in the activating process and further determine the concentration of the Pd seeds on the surface of the HGS and the overall morphology of the nickel shells.…”

Section: Resultsmentioning

confidence: 99%

Facile Preparation and Electromagnetic Properties of Core−Shell Composite Spheres Composed of Aloe-like Nickel Flowers Assembled on Hollow Glass Spheres

Pan

Zhang

2009

J. Phys. Chem. C

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Aloe-like nickel flowers assembled on hollow glass spheres are successfully synthesized by a facile low-temperature hydrothermal reduction process, and thus novel 3D core−shell composite hollow spheres with hierarchical structures are fabricated. By properly tuning the process conditions and the component of the reaction solution, a series of composite spheres with gradient in morphologies of the shell layer can be prepared. On the basis of a series of contrast experiments, the probable formation mechanism of the core−shell hierarchical structures is proposed. The magnetic properties of the products are studied, and the results demonstrate that the composite spheres present ferromagnetic properties related to the special microstructures. Because of the conductive and ferromagnetic behavior of the nickel shells, the composite spheres possess morphology-dependent microwave absorption properties and may have some promising applications in low-density magnetic materials and microwave absorbers. This work provides an additional strategy to prepared core−shell composite spheres with tailored shell morphology and electromagnetic properties.

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