densification Archives | The American Ceramic Society

densification

Sintering smaller grains to build stronger ceramics

By April Gocha / May 8, 2018

Researchers at the U.S. Naval Research Laboratory have hit a new low—while their previous work with environmentally controlled pressure assisted sintering achieved grain sizes as small as 28 nm, they now report grain sizes of just 3.6 nm.

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One flash spark plasma sintering to rule them all: Technique can densify most materials in mere seconds

By April Gocha / December 8, 2017

Researchers at San Diego State University have developed a flash spark plasma sintering technique that can densify all kinds of materials, regardless of their electrical conductivity, in a matter of just seconds.

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Water assists flash sintering to densify ceramic to 98% theoretical density in just 30 seconds

By April Gocha / September 19, 2017

Scientists at the University of California, San Diego have developed a method called water-assisted flash sintering that can densify powders to 98% of theoretical density in just 30 seconds. Their method takes place at room temperature and requires no external heating.

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Sintering technique processes ultrafine nanocrystalline spinel with grain sizes of less than 10 nm

By April Gocha / December 6, 2016

By further understanding the dependence between densification and grain growth, a University of California Davis team of researchers has devised a new process to fabricate fully dense ceramic parts with virtually no grain growth.

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Flash spark plasma sintering: Harnessing thermal runaway to densify silicon carbide in seconds

By April Gocha / October 11, 2016

Researchers at San Diego State University now report that they have developed an ultra-rapid method of flash spark plasma sintering, called flash hot pressing, that can really quickly densify even hard-to-deform materials such as silicon carbide.

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Sintered hydroxyapatite pellets may be suitable stand-in for bone

By April Gocha / September 25, 2014

Researchers from Murdoch University in Australia show that hydroxyapatite pellets, sintered at just the right temperature to get a balance between porosity and strength, can be a suitable material for bone implants.

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Bulletin Nov. 2006 Vol 85, No. 11 Online-only papers

By Eileen De Guire / March 12, 2012

“Densification and Characterization of β-Spodumene-Cordierite Compositions”The presence of β-spodumene in β-spodumene-α-cordierite composites significantly decreased the composites’ mechanical strength and coefficient of thermal expansion.S. M. Naga, A. A. El-Maghraby and H. Mörtel “Dimensional Modeling and Control of Ceramic Tile”Mathematical modeling was applied to quantify the influence of process control variables on the length of fired tile…

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Bulletin July 2006 Vol 85, No. 7 Online-only papers

By Eileen De Guire / March 12, 2012

“Chemical Resistance of Non-Lead Phosphate Sealing Glass”A non-lead phosphate sealing glass with high chemical durability, high thermal expansion coefficient and low softening temperature has been developed.Liang Wen and Cheng Jijian “Mullite-Zirconia Composites from Various Starting Materials”Changing the reaction precursor of three mullite-ZrO2 composites with homogeneously dispersed ZrO2 grains had little effect on the densification and…

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Bulletin May 2006 Vol 85, No. 5 Online-only papers

By Eileen De Guire / March 12, 2012

“Gel-Bonded Alumina-Silicon Carbide-Carbon-Based Blast-Furnace Trough Castable”Incorporation of an organic fiber improved the densification, strength, corrosion and penetration properties, under dried and fired conditions, of gel-bonded Al2O3-SiC-C-based castables that included a SiO2-sol binder for the working lining of a blast furnace trough.Ritwik Sarkar, Somnath Mukherjee and Arup Ghosh

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Bulletin Jan 2007 Vol 86, No. 1 Online-only papers

By Eileen De Guire / March 11, 2012

“Densification and Grain Growth of Microwave-Sintered Zinc Oxide Varistors”Microwave sintering of ZnO varistor materials can be accomplished at lower temperatures and can decrease grain growth, when compared with conventional sintering methods.Cong Lin, Zheng Xu, Hu Peng and Dan-Feng Sun “Microwave Hybrid Sintering of Mullite Powders”Microstructures of microwave-sintered samples were more homogeneous and displayed a narrower…

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