Nippon Tungusten Review

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2006  Volume 38 

Effect of Oxygen Introduction on Oxidation Resistance, Oxygen Amountand Cutting Performance of Silicon Nitride Based Ceramics
Mituyoshi NAGANO, Hideaki SANO*, Shigeya SAKAGUCHI, Guo-Bin Zheng*, Yasuo UCHIYAMA*
Key words Si3N4 ceramics, oxygen introduction, oxidation behavior, mechanical properties, wear resistance, cutting tool


In order to clarify the wear resistance as cutting tools, the relationship between oxygen addition and cutting performances of the β-Si3N4 ceramics with 5 mass% Y2O3 and 2 or 4 mass% Al2O3 was investigated. From test results, we could conclude that the mechanical properties of β-Si3N4 ceramics depending on oxygen introduction are effective on cutting performance improvements of β-Si3N4 ceramics.

* Department of Materials Science and Engineering, Faculty of Engineering, Nagasaki University
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