caa a22 4500 463212711 CHVBK 20180405153146.0 cr unu---uuuuu 170326e20071101xx s 000 0 eng 10.1007/s00339-007-4150-2 doi (NATIONALLICENCE)springer-10.1007/s00339-007-4150-2 Dimensional variation in production of high-aspect-ratio micro-pillars array by micro powder injection molding [Elektronische Daten] [S.G. Li, G. Fu, I. Reading, S.B. Tor, N.H. Loh, P. Chaturvedi, S.F. Yoon, K. Youcef-Toumi] Micro powder injection molding (μPIM) is one of the potential processes for the mass production of metallic microstructures and micro components. Here, μPIM is the miniaturization of conventional PIM, which involves four processing steps: mixing, injection molding, debinding and sintering. This paper looks into the feasibility and effectiveness of μPIM as a key mass production process for the fabrication of metallic micro components. For it to be an effective re-production process, it is imperative to examine how well parts can be duplicated/fabricated from a master mold. In this work, the dimensional variation of high-aspect-ratio micro-pillars arrays, in particular the dimensional shrinkage, global warpage, and surface roughness at each stage of the μPIM process for a range of molding pressures, are quantified and compared in detail. The sensitivity of the dimensional variation of the microstructures to the packing pressure is reported. The mechanism behind the dimensional variation is analyzed. Springer-Verlag, 2007 Li S.G. Singapore-MIT Alliance, N2-B2C-15, 50 Nanyang Avenue, 639798, Singapore, Singapore aut Fu G. Singapore-MIT Alliance, N2-B2C-15, 50 Nanyang Avenue, 639798, Singapore, Singapore aut Reading I. Singapore-MIT Alliance, N2-B2C-15, 50 Nanyang Avenue, 639798, Singapore, Singapore aut Tor S.B. Singapore-MIT Alliance, N2-B2C-15, 50 Nanyang Avenue, 639798, Singapore, Singapore aut Loh N.H. School of Mechanical & Aerospace Engineering, Nanyang Technology University, Singapore, Singapore aut Chaturvedi P. Precision Measurements Group, Singapore Institute of Manufacturing Technology, Singapore, Singapore aut Yoon S.F. Singapore-MIT Alliance, N2-B2C-15, 50 Nanyang Avenue, 639798, Singapore, Singapore aut Youcef-Toumi K. Singapore-MIT Alliance, N2-B2C-15, 50 Nanyang Avenue, 639798, Singapore, Singapore aut Applied Physics A Springer-Verlag 89/3(2007-11-01), 721-728 0947-8396 89:3<721 2007 89 339 https://doi.org/10.1007/s00339-007-4150-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00339-007-4150-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Li S.G. Singapore-MIT Alliance, N2-B2C-15, 50 Nanyang Avenue, 639798, Singapore, Singapore aut NATIONALLICENCE 700 1- Fu G. Singapore-MIT Alliance, N2-B2C-15, 50 Nanyang Avenue, 639798, Singapore, Singapore aut NATIONALLICENCE 700 1- Reading I. Singapore-MIT Alliance, N2-B2C-15, 50 Nanyang Avenue, 639798, Singapore, Singapore aut NATIONALLICENCE 700 1- Tor S.B. Singapore-MIT Alliance, N2-B2C-15, 50 Nanyang Avenue, 639798, Singapore, Singapore aut NATIONALLICENCE 700 1- Loh N.H. School of Mechanical & Aerospace Engineering, Nanyang Technology University, Singapore, Singapore aut NATIONALLICENCE 700 1- Chaturvedi P. Precision Measurements Group, Singapore Institute of Manufacturing Technology, Singapore, Singapore aut NATIONALLICENCE 700 1- Yoon S.F. Singapore-MIT Alliance, N2-B2C-15, 50 Nanyang Avenue, 639798, Singapore, Singapore aut NATIONALLICENCE 700 1- Youcef-Toumi K. Singapore-MIT Alliance, N2-B2C-15, 50 Nanyang Avenue, 639798, Singapore, Singapore aut NATIONALLICENCE 773 0- Applied Physics A Springer-Verlag 89/3(2007-11-01), 721-728 0947-8396 89:3<721 2007 89 339 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer