Alumina cutting performance

Masuda, M., Sato, T., Kori, T. and Chujo, Y. (1994) Cutting performance and wear mechanism for alumina-based ceramic tools when machining austempered ductile iron. Wear 174 147-153. 

The cutting performance of these new materials was tested in a direct comparison with similarly hard but single phase (absolutely oxidation resistant) pure alumina ceramics. The results are discussed in Section 4.4.4. 

S. Tashima, Y. Yamane, H. Kuroki, and N. Narutaki, Cutting performance of high purity alumina tools formed by a high speed centrifugal compaction process, J. Jpn. Soc. Powd. Powd. Metall. 1995, 42, 1464-1468. 

Laboratory studies have shown that omega (MAZ structure type) based paraffin hydroisomerization catalyst shows higher activity than mordenite based catalyst and better selectivity, i.e. higher octane due to higher yield of di-branched paraffins compared to mordenite performance (17). The isomerization of a C5/C6 cut at 15 bar results in a final calculated RON of 80.4 for the alumina bound dealuminated PtH-MOR catalyst supplied by IFP with undisclosed (most likely similar) Si/Al ratio, measured at 265 °C compared to a RON value of 80.9 for an alumina bound dealuminated PtH-MAZ catalyst with bulk Si/Al = 16, measured at 250 °C. Both measurements were performed in a bench-scale tubular reactor with a volume of 50 cm3 of 2 mm diameter extrudates with WHSV of 1.5 h and H2/HC of 4. This... 

Cutting tests performed with these recently developed alumina grades are rare, some first examples are compared in Section 4.4.4 with the performance of commercial and of submicrometer composite tools. 

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