zirconia silicon nitride ceramic loop durability importers
zirconia silicon nitride ceramic loop durability importers. ... 2014-12-15 · In this study, zirconia (ZrO 2) and silicon nitride (Si 3 N 4) balls were selected with the arithmetic average surface roughness (R a) of 0.025 µm. Table 1 shows the chemical composition of zirconia (ZrO 2) and silicon nitride (Si 3 N 4) balls selected for reciprocal ...
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