Rapid replication of metal microstructures using micro-powder hot embossing process
- 217 Downloads
Micro-metal injection moulding process technology is one of the key technologies to satisfy the increasing demands for smaller parts associated to miniaturisation and fictionalisation in different application fields. The process combines the shape-making capability of polymer by hot embossing with sintering technology to produce complex, high density metal parts with outstanding properties. The present work focussed on elaboration and characterisation of feedstock based on 316L stainless steel powders for micro-powder embossing process. In this paper, the rheological specifications of the binder and the feedstock were observed by means of capillary rheometry. Thermogravimetric analysis was carried out on feedstock in order to understand decomposition behaviour of the binder components. The effects of sintering temperature on the dimensional stability, and particularly hardness of sintered components, were investigated. The results show that the feedstock can be used for the manufacturing of the micro-fluidic die mould cavities with a low roughness, proper dimensions and good shape retention.
KeywordsHot embossing Rheological characteristics Homogeneity Binder system 316L stainless steel
Unable to display preview. Download preview PDF.
- 8.Kolew A, Muench D, Sikora K, Worgull M (2011) Hot embossing of micro and sub-micro structured inserts for polymer replication. Microsyst Technol Micro Nanosyst Informat Storage Process Syst 17:609–618Google Scholar
- 10.Sahli M, Millot C, Roques-Carmes C, Khan Malek C, Gelin JC, Barrière T (2009) Quality assessment of polymer replication by hot embossing and micro-injection molding processes using scanning mechanical, microscopy. J Mater Process Technol 209:5851–5861Google Scholar
- 16.Carvalho BL, Schilling EA, Schmid N, Kellog GJ (2003) Soft embossing of microfluidic devices, Proceedings of the 7th international conference on miniaturized chemical and biochemical analysis systems, Squaw Valley, CA, USA, pp 959–962Google Scholar