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.
Read MoreScientists 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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