[T11] Tribology in PM

[16C-T11-05] Surface Roughness Evaluation with Using white Light Iinterferometry

K. Kato^{1, 2}, *Y. Akiyama^{1, 3}, H. Fukamachi^{1, 4}, K. Matsuda^{1, 5}, T. Mouri^{1, 6}, A. Aoki^{1, 7}, Y. Ozaki^{1, 8}, Y. Takeda¹ (1.Japan Powder Metallurgy Association, Technical Committee for Sintered Mechanical Parts, Japan, 2.Diamet Corporation, Japan, 3.Sumitomo Electric Sintered Alloy, Ltd., 4.Fine Sinter Co., Ltd., Japan, 5.Porite Corporation, Japan, 6.NTN Advanced Materials Corporation, Japan, 7.Nippon Piston Ring Co., Ltd., Japan, 8.Kyusyu University, Japan, )

キーワード：surface roughness, evaluation method, white light interferometry

ISO Standard 23519:2010 defines the surface roughness of sintered metal parts: Rk and Rpk. The standard was intended to provide relevant surface roughness data regardless of porosity which often gives not fair data. There are still some parameters which might influence the surface roughness data in accordance with the standard like: measuring probe, instrument, filter etc. The effect of such parameters was investigated and compared with an optical method using white light interferometry. 5 different probes, 3 different measuring instruments and 2 different software filters were used. The measured surfaces of specimens having density of 6.4, 6.8 and 7.2 are punch facing side and die facing side. Details of the results will be presented.