An apparatus for density determination on very small solid samples

Cawthorne, C.; Sinclair, W D

doi:10.1088/0022-3735/5/6/010

Cited by 24 publications

(9 citation statements)

References 2 publications

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“…Sintered density and the volume of open and closed pores were measured using the Archimedes method 34,35 . The closed pores are defined as the pores which could not be filled by water after samples were immersed in water and evacuated in a desiccator.…”

Section: Methodsmentioning

confidence: 99%

Liquid Phase Sintering of Alumina, I. Microstructure Evolution and Densification

Dong¹,

Jain²,

Harmer³

2005

Journal of the American Ceramic Society

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The microstructure evolution and densification of alumina containing 10 vol% calcium aluminosilicate glass and 0.5 wt% magnesium oxide sintered at 16001C were quantified by measuring the evolution of pore-size distribution, the redistribution of liquid phase, and the fraction of closed and open pores. The densification stopped at a limiting relative density during the final stage of sintering, and the small and large pores were filled simultaneously by glass during sintering. In addition, the results indicate that the pressure build-up of the trapped gases in pores causes a significantly negative contribution to the driving force, and consequently the observed reduction in densification during the final stage of liquid phase sintering.

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Section: Methodsmentioning

confidence: 99%

Liquid Phase Sintering of Alumina, I. Microstructure Evolution and Densification

Dong¹,

Jain²,

Harmer³

2005

Journal of the American Ceramic Society

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“…Ultra‐high precision may be obtained for large specimens, however, often only limited specimen quantities (<< cm 3 ) are available. Examples of this category include studies of radiation effects, where high radioactivity doses induce a void‐swelling of the samples, sometimes only at the surface regions; of relaxation of metallic glasses, where the dimensions of the rapidly quenched samples are responsible for the lower density of the samples; of micro‐ or nanostructures, where the amount of processed material is sometimes extremely small …”

Section: Introductionmentioning

confidence: 99%

Bulk Density Measurements of Small Solid Objects Using Laser Confocal Microscopy

Kilmametov

Gröger

Hahn

et al. 2016

Adv Materials Technologies

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In this study a novel approach for precise density measurement of samples with a small weight in the range of 1–3 mg is presented. A new kind of displacement method has been developed, by which a solid object is dropped into a semi‐confined cylindrical cavity, which is filled with a nonvolatile liquid, to determine the volume of the sample. Due to surface tension, the upper level of the liquid forms a spherical meniscus pinned at the circular contact line, which is limited by a printed hydrophobic self‐assembled monolayer. Monitoring of the liquid level is performed by confocal laser microscopy with µm‐resolution. A straightforward procedure is developed to build‐up a mass/volume linear dependence. This enables to determine the density of small solids with an accuracy of ≤0.5%. The method appears to be very sensitive to open and closed porosity. Applying a vacuum of 20 mbar to the already immersed samples allows to perform quantitative porosimetry on a rather limited amount of material of only ≈0.25 µL. This corresponds to about 2–5 mg for most metals, 1–2 mg for most ceramics, or even only 0.25–1 mg for organic materials.

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Section: Methodsmentioning

confidence: 99%

“…Density measurements of the bubbled glasses were performed at room temperature using a methodology based on the Archimedean method with water as an immersion liquid and a Mettler AT200 scale. 24 Measurements were replicated three times for each sample. By employing the aforementioned methodology the density of a sample can be calculated by: where W A is the scale reading with the specimen on the stirrup in the air, W W is the scale reading with the specimen on the submerged stirrup, and ρ w is the water density.…”

Section: Density Measurementsmentioning

confidence: 99%

Inferring bubble volume fraction in a glass melt through in situ impedance spectroscopy measurements

Pereira

Neyret

Laplace

et al. 2021

Int J of Appl Glass Sci

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Bubbled materials can be considered a limiting case composite. 1,2 This low-density phase may be either beneficial or not, depending on its characteristics and the final material application. This phase usually has a detrimental effect when mechanical or corrosion behaviors are considered. On the other hand, these gaseous inclusions usually decrease the thermal and electrical conductivities of solid and liquid materials.Hence, for insulating systems, these composite materials are considered a useful option. In terms of glass/melt engineering processes, bubbles may affect the overall electrical conductivity of a glass bath, 3 and the direct induction process could also be affected 4 because bubbles may negatively affect the thermal and electrical conductivities, resulting in low efficiency and elevated costs.These bubbled materials have been investigated for decades using several experimental methods. To study a population of bubbles, for example, different techniques have been applied so far. Microscopic techniques have been applied to

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An apparatus for density determination on very small solid samples

Cited by 24 publications

References 2 publications

Liquid Phase Sintering of Alumina, I. Microstructure Evolution and Densification

Liquid Phase Sintering of Alumina, I. Microstructure Evolution and Densification

Bulk Density Measurements of Small Solid Objects Using Laser Confocal Microscopy

Inferring bubble volume fraction in a glass melt through in situ impedance spectroscopy measurements

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