TiCを主成分としたサーメット粉体の表面処理とその処理効果(<小特集>粉体小特集)

概要

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The surface-treatment of cement powder was investigated by means of X-ray photoelectron spectroscopy,X-ray diffraction method,scanning electron micrography, dispersive property measurement and pyrolysis. The influences od surface-treatment on the molding and the flow property of the blend with paraffin were also studied. The results obtained were summarized as follows: (1) The surface of cermet powder was recognized to be covered by an oxide layer which contains surface groups such as ⪫TiOH, ⪫COH, -COOH, >CO and ⪫COC⪪ (2) When the cermet powder was surface-treated with alcohol, the nature of the surface changed from hydrophilic to hydrophobic; (3) From the analysis of pyrolysis product,s of surface-treated powder, the surface group was found to be the alkyl group of the alcohol used: (4) The apparent density of molded tabulet of surface-treated powder was higher than that of original powder, and the pore volume of the former was smaller than that of the latter; (5) The extrusion test of the blend with paraffin showed that the amount of paraffin needed for the surface-treated cremete powder was smaller than that for the original powder in order to obtain a similar property of flow.
社団法人日本材料学会の論文
1986-11-15