Al2O3-SiCセラミックス工具の切削性能

概要

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The cutting performance (flank wear VB, flank notch wear VN) of Al2O3-25 vol%SiC ceramics tool for such works as cast iron (FC35), steel (S48C) and Inconel 600 was examined in comparison with that of Al2O3-25 vol%TiC and Al2O3-30 vol%SiC whisker ceramics tools. The results obtained were briefly summarized as follows: The Al2O3-TiC ceramics tool showed the smallest VB and largest VN for Inconel 600, among three sorts of tools, reflecting the difference of the reactivity between TiC and SiC to the works and that of the resistance to oxidation between TiC and SiC contained ceramics, rspectively. Comparing Al2O3-SiC ceramics tool to Al2O3-SiC whisker one in cutting tests of Inconel 600, VB and VN of the former were somewhat smaller and larger, respectively. The phenomenon was explained by the fact that, in the SiC whisker contained tool, the reactivity on the works was enhanced, but abrasive wear at flank notch was checked, owing to the anisotropic array of whiskers like sticking the flank surface from inside.
社団法人粉体粉末冶金協会の論文