“…For example, plasma spraying has been investigated by several researchers to deposit nanostructured ceramic coatings such as WC, Cr 3 C 2 , Al 2 O 3 -TiO 2 , and ZrO 2 . [1][2][3][4][5][6] However, the use of plasma spraying to fabricate a bulk, freestanding nanostructured Al 2 O 3 component has rarely been reported in the literature. In this study, freestanding, net-shape nanostructured Al 2 O 3 structures were fabricated using plasma-spray forming.…”