Characterization of reticulated ceramic foams with mercury intrusion porosimetry and mercury probe atomic force microscopy

Voigt, Claudia; Hubálková, Jana; Ditscherlein, Lisa; Ditscherlein, Ralf; Peuker, Urs A.; Giesche, Herbert; Aneziris, Christos G.

doi:10.1016/j.ceramint.2018.09.094

Cited by 26 publications

(12 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The two measurements, which were performed for every sample type were in good agreement. The cumulative mercury volume in dependence on the pore diameter showed a comparable curve progression for large pore sizes (from 320 to approximately 75 μm); the sharp rise was caused by the filling of the strut cavities . For smaller pore sizes (<75 μm), there were visible differences, which could be matched with the process route, by considering the incremental pore volume, see Figure and .…”

Section: Resultsmentioning

confidence: 65%

“…The cumulative mercury volume in dependence on the pore diameter showed a comparable curve progression for large pore sizes (from 320 to approximately 75 μm); the sharp rise was caused by the filling of the strut cavities. [2] For smaller pore sizes (<75 μm), there were visible differences, which could be matched with the process route, by considering the incremental pore volume, see Figure 8 and 9. The measurements of samples with a centrifuged second coating showed a strong peak in the incremental mercury volume at around 150 nm, whereas samples with a sprayed second coating possessed double peaks in the incremental pore volume at around 200 and 500 nm.…”

Section: Investigation Of the Foam And Pore Structurementioning

confidence: 78%

“…Strut cavities are formed by the thermal decomposition of the polyurethane (PU) template and possess a triangular, sharp‐edged profile. The third kind of observed pores is material pores inside of the ceramic substrate . For evaluating these various types of pores, different techniques are applied.…”

Section: Introductionmentioning

confidence: 99%

“…[2,3] For evaluating these various types of pores, different techniques are applied. Functional pores and the coating homogeneity can be analyzed by μCT imaging; [4] strut cavities and material pores are evaluated by means of mercury-intrusion porosimetry [2] as well as scanning electron microscopy (SEM); strut thicknesses can be measured by means of optical microscopy. In the last 5 years, the usage of carbon-bonded ceramic foams instead of oxidic ones has been the topic of extensive research in the field of metal-melt filtration.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Influence of the Manufacturing Technique on the Macro‐ and Microstructure of Reticulated Carbon‐Bonded Alumina Foams

et al. 2019

Self Cite

View full text Add to dashboard Cite

Carbon‐bonded alumina foams, prepared by means of the replica technique, are typically used as metal melt filters for the filtration of steel due to their low wettability and their good resistance towards thermal shock and corrosion. According to literature, there are different process routes for the preparation of carbon‐bonded alumina foams, for example, dipping/rolling, spray‐ and dip/centrifugation coating. The influence of such process variations on macro‐ and microstructure and mechanical properties of carbon‐bonded ceramic foams has not been analyzed fully yet. Herein, carbon‐bonded alumina foams are manufactured by applying varying process routes regarding slurry preparation and coating steps. The macrostructure of the foams is analyzed by computer tomography, and for evaluating the microstructure, mercury intrusion porosimetry, optical microscopy, and scanning electron microscopy are applied. The determination of the cold‐crushing strength of the carbon‐bonded alumina foams allows the correlation of the structure and mechanical properties.

show abstract

Section: Resultsmentioning

confidence: 65%

Section: Investigation Of the Foam And Pore Structurementioning

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of the Manufacturing Technique on the Macro‐ and Microstructure of Reticulated Carbon‐Bonded Alumina Foams

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…The capillary pressure curve (CPC) experimentally obtained by mercury intrusion (also known as the mercury intrusion capillary pressure) has been found to be among the most effective data for studying the pore structure at a relatively large scale compared with the micron‐sized scanning electron microscopy images. The heterogeneity and anisotropy of pore structures are involved in the CPC; thus, the CPC has been applied to a wide range of natural or synthetic porous media, such as shale, tight sandstone, carbonate rock, packing bed, coal rock, cement slurry, and fine sediment containing natural gas hydrate (Cai et al, ; Lei & Santamarina, ; Sang et al, ; Voigt et al, ; Wyrzykowski et al, ). From the equivalent hydraulic size distribution of the pore‐throat (SDPT) given by the CPC, many critical pore structure parameters, such as the threshold pressure and radius, the maximum displacement pressure P d and its corresponding maximum pore‐throat radius r max , the average pore‐throat radius r mean , the irreducible water saturation S wir , the structural coefficient T , and the pore‐throat radius at any saturation (e.g., r 15 , r 25 , r 50 ), can be directly determined (Nooruddin et al, ).…”

Section: Introductionmentioning

confidence: 99%

Capillary Pressure Curve Determination Based on a 2‐D Cross‐Section Analysis Via Fractal Geometry: A Bridge Between 2‐D and 3‐D Pore Structure of Porous Media

Chen

Yao

Luo³

et al. 2019

JGR Solid Earth

View full text Add to dashboard Cite

Pore structure is a crucial attribute in characterizing fluid flow through porous media. However, direct experimental measurements or numerical reconstructions are commonly expensive and not environmentally friendly, with great uncertainty caused by the complex nature of porous media. In this study, we demonstrate that one special bridge function, which is a function of the apparent length and tortuosity fractal dimension, can characterize the relationship of pore structures between two dimensions (2‐D) and three dimensions (3‐D), and it can serve as a conversion bridge of the radius to determine the capillary pressure curve (CPC). We compare estimations by the proposed method with experimental results obtained by mercury intrusion porosimetry in six typical natural sandstones with varying porosities and permeabilities. The result shows that cross sections of the global pore structure, such as thin section, electronic probe, and microcomputed tomography slices, give a reliable estimation of the CPC using the bridge function in porous media with a medium porosity. However, in unconventional porous media with a relatively low porosity (~10%) or extra high porosity (~30%), due to the empirical nature of the equation widely used to calculate the tortuosity fractal dimension, the necessary modification is necessary to obtain the CPC when applying the bridge function in such porous media. This insight can significantly simplify the procedure for obtaining the petrophysical properties of a porous medium, which may shed light on the inherent differences and correlations between the 2‐D and 3‐D pore structures of porous media.

show abstract

Ultra‐Large Scale Stitchless AFM: Advancing Nanoscale Characterization and Manipulation with Zero Stitching Error and High Throughput

Liu,

Li,

Zhang

et al. 2023

Small

View full text Add to dashboard Cite

The atomic force microscopy (AFM) is an important tool capable of characterization, measurement, and manipulation at the nanoscale with a vertical resolution of less than 0.1 nm. However, the conventional AFMs' scanning range is around 100 µm, which limits their capability for processing cross‐scale samples. In this study, it proposes a novel approach to overcome this limitation with an ultra‐large scale stitchless AFM (ULSS‐AFM) that allows for the high‐throughput characterization of an area of up to 1 × 1 mm2 through a synergistic integration with a compliant nano‐manipulator (CNM). Specifically, the compact CNM provides planar motion with nanoscale precision and millimeter range for the sample, while the probe of the ULSS‐AFM interacts with the sample. Experimental results show that the proposed ULSS‐AFM performs effectively in different scanning ranges under various scanning modes, resolutions, and frequencies. Compared with the conventional AFMs, the approach enables high‐throughput characterization of ultra‐large scale samples without stitching or bow errors, expanding the scanning area of conventional AFMs by two orders of magnitude. This advancement opens up important avenues for cross‐scale scientific research and industrial applications in nano‐ and microscale.

show abstract

Characterization of reticulated ceramic foams with mercury intrusion porosimetry and mercury probe atomic force microscopy

Cited by 26 publications

References 16 publications

Influence of the Manufacturing Technique on the Macro‐ and Microstructure of Reticulated Carbon‐Bonded Alumina Foams

Influence of the Manufacturing Technique on the Macro‐ and Microstructure of Reticulated Carbon‐Bonded Alumina Foams

Capillary Pressure Curve Determination Based on a 2‐D Cross‐Section Analysis Via Fractal Geometry: A Bridge Between 2‐D and 3‐D Pore Structure of Porous Media

Ultra‐Large Scale Stitchless AFM: Advancing Nanoscale Characterization and Manipulation with Zero Stitching Error and High Throughput

Contact Info

Product

Resources

About