Materials scientists often use grain size as the determining variable when correlating a ceramic’s structure with its properties. But the morphology and orientation of the grains can also significantly affect a material’s properties. Researchers in China developed a framework that can correlate a material’s structural hierarchy with its properties, and their latest paper explores the potential of linking this framework to Vickers hardness.
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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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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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