Microinjection moulding of 316L/17-4PH and 316L/Fe powders for fabrication of magnetic–nonmagnetic bimetals

Imgrund, Philipp; Rota, Astrid; Simchi, A.

doi:10.1016/j.jmatprotec.2007.09.068

Cited by 50 publications

(42 citation statements)

References 8 publications

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“…Several combinations like soft/hard or magnetic/ non-magnetic can be realized. An early study on co-injection moulding for surface engineering has been carried out by Alcock et al (1998) (Imgrund et al 2005), a comparison study of simultaneous and sequential injection moulding (Imgrund et al 2007a) and the combination of magnetic with non-magnetic metals (Imgrund et al 2008). As examples to show the feasibility of 2C-MicroMIM for producing two-metal micro parts, a magnetic positioning encoder (Fig.…”

Section: Two-component Micro Metal Injection Moulding (2c-micromim)mentioning

confidence: 99%

The development of two-component micro powder injection moulding and sinter joining

et al. 2011

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Two-component micro powder injection moulding experienced significant progress in the recent past. Starting as a manufacturing method for integrating two different plastics, the extension of two-component injection moulding (2C-IM) from pure plastics to more resistant materials like ceramics or metals (2C-PIM) provided sophisticated and challenging applications. With the transfer of 2C-PIM to micro systems, two-component micro powder injection moulding (2C-MicroPIM) was established. Up to a certain extend sinter joining is an alternative to 2C-PIM. It allows for component assemblies to be moulded as separate low-complexity parts which are then joined into complex assemblies. This procedure considerably reduces the time and cost required to manufacture the injection moulding tools. This article gives an overview of the development of 2C-MicroPIM-from two component plastic devices to the production of complex two-component micro assemblies made of two ceramic or metallic materials and the state-ofthe-art of science and technology of sinter joining.

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Section: Two-component Micro Metal Injection Moulding (2c-micromim)mentioning

confidence: 99%

The development of two-component micro powder injection moulding and sinter joining

et al. 2011

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“…Baumann et al (2009) also fabricated 3Y-TZP/stainless steel composite structure using co-powder injection. Two component micro-injection moulding of stainless steel (316L/17-4PH) and (316L/Fe) powders for producing magnetic-nonmagnetic bimetals have also been investigated (Imgrund et al 2008). The European specific targeted research project (STREP) have developed many ceramic components for automotive and railway applications using two-component ceramic injection moulding (2C-CIM) (Moritz & Mannschatz 2010).…”

Section: Introductionmentioning

confidence: 99%

Two Component Injection Moulding of Bi-material of Stainless Steel and Yttria Stabilized Zirconia – Green Part

Emeka¹,

Sulong²,

Muhamad³

et al. 2017

JKUKM

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“…Presented examples from the last years include metallic (Alcock et al 1998;He et al 2010;Imgrund et al 2005Imgrund et al , 2007Imgrund et al , 2008Petzoldt 2010;Whittaker 2008) as well as ceramic materials (Finnah et al 2005;Moritz 2008;Moritz and Mannschatz 2009;Petzoldt 2010;Piotter et al 2004Piotter et al , 2008Piotter et al , 2010aRuh et al 2009Ruh et al , 2011Whittaker 2008). Depending on thermal processing also movable ceramic connections can be produced by 2C-MicroPIM.…”

Section: Introductionmentioning

confidence: 99%

Influence and limits of sintering temperatures on the movability of shaft-to-collar connections formed by two-component micro powder injection moulding

et al. 2011

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Two-component micro powder injection moulding (2C-MicroPIM) is a special variant of micro injection moulding. It enables the integration of two different functions in one micro assembly due to the combination of different materials. By 2C-MicroPIM it is possible to realise fixed and movable connections. For both applications, the two components have to be adapted well to each other. The adaptation has to cover the materials as well as the processes. In this context, especially the sintering process is of importance since the degree of shrinkage and physiochemical processes at the interface between both components determine either the formation of a fixed junction between the components or the formation of a gap. Both processes are temperature-dependent. Therefore, it can be assumed that by a certain temperature these processes can affect the interface in such a way that it may get in conflict with the formation of movable connections, i.e., there is a limiting temperature at which the components are not joined together. Above this temperature joining of the components occurs at least partially. For this study, shaft-to-collar connections were produced by 2C-MicroPIM. They consist of a gear wheel made of zirconia feedstock and an axle made of alumina feedstock. The 2C-MicroPIM process has influence on the characteristics of the micro parts, like functionality, density and mechanical properties. This work focuses on movability of the shaft-to-collar connection as the most important function. The sintering temperature required for movable connections constitutes important limits for the overall process. The aim of our presented work is to determine the limit temperature or temperature range at which movable connections cannot be formed due to the mentioned processes. Furthermore it was analysed if there is a smooth transition from movable connections to unmovable connections with increasing temperature or if this transition takes place within a small temperature range. Within a given temperature interval the portion of movable connections out of all sintered samples were counted for each peak temperature. The results showed that the number of movable connections decreases with increasing peak sintering temperature. Hence, production of movable connections has a limit with respect to sintering temperature. This temperature limit was found to be sharply defined at around 1,460-1,470°C.

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Microinjection moulding of 316L/17-4PH and 316L/Fe powders for fabrication of magnetic–nonmagnetic bimetals

Cited by 50 publications

References 8 publications

The development of two-component micro powder injection moulding and sinter joining

The development of two-component micro powder injection moulding and sinter joining

Two Component Injection Moulding of Bi-material of Stainless Steel and Yttria Stabilized Zirconia – Green Part

Influence and limits of sintering temperatures on the movability of shaft-to-collar connections formed by two-component micro powder injection moulding

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