[T11] Tribology in PM

[16C-T11-05] Surface Roughness Evaluation with Using White Light Interferometry

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, *Y. Anezaki^1,3 (1.Japan Powder Metallurgy Association, Japan, 2.Diamet Corporation, Japan, 3.Sumitomo Electric Sintered Alloy, Ltd., Japan, 4.Fine Sinter co., ltd., Japan, 5.Porite Corporation, Japan, 6.NTN Advanced Material Corporation, Japan, 7.NPR-RIKEN CORPORATION, Japan, 8.Osaka University, Japan)

Keywords:2D Roughness, 3D Roughness, White light interferometry

ISO Standard 23519:2010 defines the surface roughness of sintered metal parts: Rk and Rpk, and it intends to provide relevant surface roughness data regardless of porosity,- however the data reliability tends to be insufficient in practice. The following parameters might influence the surface roughness data in accordance with the standard such as; measuring probe, instruments, filters, and others. The effect of such parameters was investigated and compared with an optical method using white light interferometry. 3 different measuring instruments were used. The measured surfaces of specimens having density of 6.4, 6.8 and 7.2 are punch facing side. In this study, details of the results are presented.