<研究論文>湿式プロセスにより作製したアルミナエ具の耐チッピング性

概要

論文の詳細を見る
[synopsis]The wet-shaping process had been used the slurry that dispersed the powder in the solvent. In this study, for the multipurpose utilizations of the wet-shaping process, the alumina cutting tool was adopted as an example of application. For the reason, the investigation of sintering conditions and the cutting test of produced tool ware carried out. And, it was examined whether the wet-shaping process was effective to produce for the alumina cutting tool as the chipping resistance. From the results, the characteristic of sintered alumina were kept high performance balance, because there were shown to the relative density of 99％, the hardness of Hv1937, the fracture toughness of 3-4 MPa • m^<1/2>, the 4-point bending strength of 711MPa and the grain size of 2μm in each sintering condition. In addition, from the results of cutting test, the large-scale chipping was not occurred to the cutting face in low cutting speed. Therefore, the produced tool by the wet-shaping process was effective for the chipping in cutting.