Fabrication of bronze components by metal injection moulding using powders with different particle characteristics

Contreras, José M.; Jiménez-Morales, Antonia; Torralba, J. M.

doi:10.1016/j.jmatprotec.2009.05.021

Cited by 25 publications

(10 citation statements)

References 9 publications

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“…But powders with different sizes and with a wider granulometric distribution can be used to make the process cheaper. In Contreras et al (2009), it was verified that the particle shape and size of the powder used in MIM have a great influence on the rheological properties of the powder-binder mixtures. The use of powders with irregular particle morphology leads to an increase in viscosity, in the yield stress and, in general, to a worsening of the rheological properties.…”

Section: Thermal Debindingmentioning

confidence: 96%

“…The powder-binder mixtures fabricated from fine and coarse powders showed a reduction in viscosity and improved rheological properties in comparison with those in which the fine or coarse powders were used separately; therefore, using these mixtures the injection process could be improved simultaneously such that the production costs are reduced. These later powders need more care for the debinding process in terms of time and heating/cooling rates (Contreras et al, 2009).…”

Section: Thermal Debindingmentioning

confidence: 99%

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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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Section: Thermal Debindingmentioning

confidence: 96%

Section: Thermal Debindingmentioning

confidence: 99%

Powder injection moulding: processing of small parts of complex shape

Torralba

Hidalgo

Jiménez-Morales

2013

IJMMP

Self Cite

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“…The samples are de-bound by using solvent de-binding and thermal debinding integrated with (undisclosed) sintering. Contreras et al [26] report a MIM study on 90/10 bronze part with different powder characteristic. The extruded, green 90/10 bronze parts are firstly solvent de-bound in hexane and then thermally de-bound and sintered in hydrogen atmosphere at 870°C.…”

Section: Fdm Technologymentioning

confidence: 99%

Microstructural and Mechanical Properties of Polylactic Acid/Tin Bronze Tensile Strength Bars Additive Manufactured by Fused Deposition Modelling

Dizdar

Krishna

2022

Advances in Transdisciplinary Engineering

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Tensile stress bar samples have been additive manufactured by fused deposition modelling (FDM) route by using polylactic acid (PLA)/tin bronze filament, thermal de-binding and air sintering. The samples reach sintered density of 7.42 g/cm3 or 85% of the relative density of the continuously casted CuSn10 reference. Tensile stress testing of the samples shows rather moderate mechanical properties, about half yield strength and one third maximal strength, elongation and hardness of the reference. Increase in the sample core density and elimination of large, agglomerated pores may result in largest improvement of the mechanical properties.

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“…Components for microelectronics are mostly fabricated by powder metallurgy (PM) processes, such as metal injection molding (MIM), hot isostatic pressing (HIP) and three-dimensional printing (3DP), because of their complicated shapes and small sizes [1][2][3][4][5][6][7]. In the past, micro-sized metal-powders were mainly used for these PM processes [8].…”

Section: Introductionmentioning

confidence: 99%

Control of the Nano-Particle Weight Ratio in Stainless Steel Micro and Nano Powders by Radio Frequency Plasma Treatment

Yang

Kim

Hur

et al. 2015

Metals

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This study describes how to make stainless steel hybrid micro-nano-powders (a mixture of micro-powder and nano-powder) using an in situ one-step process via radio frequency (RF) thermal plasma treatment. Nano-particles attached to micro-powders were successfully prepared by RF thermal plasma treatment of stainless steel powder with an average size of 35 μm. The ratio of nano-powders is estimated with a two-dimensional fluid simulation that calculates the temperature profile influencing the rate of surface evaporation. The simulation is conducted to determine the variation of the input power and the distance from the plasma torch to the feeding nozzle. It was demonstrated experimentally that the nano-powder ratio in the micro-nano-powder mixture can be controlled by adjusting the feeding rate, plasma power, feeding position and quenching effect during plasma treatment. The ratio of nano-particles in the micro-nano-powder mixture was controlled in a range from 0.1 (wt. %) to 30.7 (wt. %).

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Fabrication of bronze components by metal injection moulding using powders with different particle characteristics

Cited by 25 publications

References 9 publications

Powder injection moulding: processing of small parts of complex shape

Powder injection moulding: processing of small parts of complex shape

Microstructural and Mechanical Properties of Polylactic Acid/Tin Bronze Tensile Strength Bars Additive Manufactured by Fused Deposition Modelling

Control of the Nano-Particle Weight Ratio in Stainless Steel Micro and Nano Powders by Radio Frequency Plasma Treatment

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