二酸化マンガン-黒鉛系成形体の表面形状の測定 Measurement of Surface Roughness of Molded Manganese Dioxide-Graphite
Compacted manganese dioxide-graphite is used for the positive electrodes of coin-shaped lithium cells. The surface roughness of such compacts was examined and measured using a laser microscope. The examined compacts were produced with variations in pre-compact and compact pressures. The hardness of each compact was also measured. These examinations and measurements yielded the following:<BR>1) Laser microscopic examination permits quantitative and microscopic evaluation of the surface roughness of each compact. A 3-dimensional representation of the examined results offered a more detailed image of surface roughness (profile).<BR>2) A pre-compact pressure of no more than 20% of the compact pressure, enabled the production of a molding with a considerably smooth surface and little textural variation.<BR>3) A compact pressure of 294 to 392MPa is sufficient to produce the compacts with a smooth surface and revealed the sufficient hardness as not to break when handled.
粉体および粉末冶金 43(7), 890-895, 1996-07-15
Japan Society of Powder and Powder Metallurgy