Binder system for STS 316 nanopowder feedstocks in micro-metal injection molding

Supriadi, Sugeng; Baek, Eung Ryul; Choi, Chul Jin; Lee, Byong‐Taek

doi:10.1016/j.jmatprotec.2006.11.157

Cited by 45 publications

(31 citation statements)

References 5 publications

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“…7,8 Hence, low viscosity and good wetting behaviour are required for the binder system to enable easy gliding of submicron or nanoparticles. 9 Besides, green strength of binder system is necessary for micro components to sustain defect-free demoulding and retain shape through debinding. Typically, a multi- to meet these stringent requirements, in which a low-molecule component of wax provides the feedstock low viscosity, a backbone polymer serves to hold the shape of a green part and a small amount of additives are added to improve the compatibility of powder and binders.…”

Section: Introductionmentioning

confidence: 99%

Mouldability of various zirconia micro gears in micro powder injection moulding

Liu¹,

Ni²,

Yin³

et al. 2015

Journal of the European Ceramic Society

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Section: Introductionmentioning

confidence: 99%

Mouldability of various zirconia micro gears in micro powder injection moulding

Liu¹,

Ni²,

Yin³

et al. 2015

Journal of the European Ceramic Society

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“…Content of the proportion between backbone binder to the secondary one also influence the green parts during injection moulding phase and prediction of the shape of the compact in the debinding process [6], [8]. Here in this paper, powder loading of 62% of stainless steel with different sewage fat contents will be used in predicting its influence on rheological characteristic of MIM feedstock.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Sewage Fat Composition on Rheological Behavior of Metal Injection Moulding

Amin

Ibrahim

Asmawi

et al. 2014

AMM

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Influence of sewage ratio or Fat Oil Grease (FOG) on the feedstock rheological characteristic for optimal binder formulation in metal injection moulding is evaluated besides Polypropylene (PP) as a backbone binder. Powder loading of 62% of water atomised SS316L being used here to determine the possibility of the best binder formulation which could be optimised for optimal powder loading base on rheological characteristic analysis. Two binder formulations of PP to SF being selected here are 60/40, 50/50 and 40/60 accordingly with the powder loading of 62% each binder formulation. The analysis will be base on viscosity, shear rate, temperature, activation energy, flow behaviour index and moldability index. It is found that from rheological result views, binder with composition of 60/40 and 50/50 exhibit pseudoplastic behaviour or shear thinning where the viscosity decrease with increasing shear rate. For 40/60 binder ratio is not suitable since the behaviour of the flow indicates dilatants behaviour. After considering all the criteria in terms of flow behaviour index, activation energy, viscosity and mouldability index, binder with ratio of 60/40 is evolve as a good selections.

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“…Average size of PIM parts is around few centimetres, but there are examples from few milimetres, but in the last years the µPIM technology has been developed in which the final size of the part is under 1 mm in the large dimension (this means parts with no more than a few hundreds of microns are in the large dimension, and usually sizes less than 100 µm are in the larger dimension) (Piotter et al, 2003). The µPIM technology has opened the interesting field of nanotechnologies to this processing method (Supriadi et al, 2007). MicroMIM is a process to produce micro devices at low cost, high performance and with good dimensional control.…”

Section: Introductionmentioning

confidence: 99%

“…As can be deduced, the main constraint in this technology is the size of the particles. For this reason, the µPIM was first developed (with ceramics that usually have lower particle size), and one of the tendencies of the technology is to use nanopowders with dimensions lower than 100 nm (Supriadi et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Powder injection moulding: processing of small parts of complex shape

Torralba

Hidalgo

Jiménez-Morales

2013

IJMMP

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Powder Injection Moulding (PIM), Metal Injection Moulding (MIM)when is limited to metals, is a fabrication route of parts with the final shape desired. This process combines the high capability of polymer injection moulding to produce complex shapes with the advantages of a powder route to process metallic, ceramic or composites materials. The process has some limitations that comes from different technological steps involved in the production of the part (feedstock production, injection, debinding and sintering). All of these different steps can be industrially controlled, being the PIM process a real alternative to produce complex parts in a high rate production method that can compete with many other processing methods to produce materials. In this work, we will go through the different steps of this manufacturing process, making special emphasis on the solutions provided by the powder technology group of the University Carlos III of Madrid (UC3M).

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Binder system for STS 316 nanopowder feedstocks in micro-metal injection molding

Cited by 45 publications

References 5 publications

Mouldability of various zirconia micro gears in micro powder injection moulding

Mouldability of various zirconia micro gears in micro powder injection moulding

The Influence of Sewage Fat Composition on Rheological Behavior of Metal Injection Moulding

Powder injection moulding: processing of small parts of complex shape

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