Improving titanium injection moulding feedstock based on PEG/PPC based binder system

Hayat, Muhammad Dilawer; Jadhav, Pratik; Zhang, Hongzhou; Ray, Sudip

doi:10.1016/j.powtec.2018.02.043

Cited by 14 publications

(2 citation statements)

References 26 publications

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“…At present, the interaction of the binder and powder is mainly assessed by rheological and thermogravimetry measurements [3,[15][16][17]. Very little is known about the specific interactions among binder components and how such interaction affects the MIM of reactive powders, such as Ti-MIM.…”

Section: Introductionmentioning

confidence: 99%

Interactions of polymeric components in a POM-based binder system for titanium metal injection moulding feedstocks

et al. 2023

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Owing to the different characteristics of each of the multiple polymers, obtaining a homogenous metal injection moulding (MIM) feedstock blend is challenging. Therefore, studying interactions between the polymeric components is vital for achieving suitable MIM feedstocks. We report on the effects of different compatibilisers -EGMA and E40on the interactions in polyoxymethylene (POM) and polypropylene (PP) blends. We measured contact angles and performed Fourier transform infrared spectroscopy and atomic force microscopy analyses to identify the suitable compatibiliser that yields a feedstock with excellent properties. It was found that the binder system based on EGMA-3 demonstrates the lowest contact angle and best miscibility for the POM/PP blends compared to E40. This enhanced interaction lies in the chemistry of EGMA, having an active site that reduces the interfacial tension between the components of the POM/PP blend. Subsequently, this creates a positive interaction between the polymers and metal powders, ensuring good adhesion within the feedstock.

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Section: Introductionmentioning

confidence: 99%

Interactions of polymeric components in a POM-based binder system for titanium metal injection moulding feedstocks

et al. 2023

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“…During the first step, the primary binder is extracted either by a solvent [8][9][10], a supercritical fluid such as supercritical carbon dioxide [11,12], or a catalyst such as highly concentrated nitric acid [13,14], depending on the binder system and powder characteristics. During the second step, the secondary binder, acting as a backbone to retain the shape, is removed during a final burnout cycle before the sintering process [15,16]. During the MIM process, several chemical reactions such as oxidation, reduction, carburization, and decarburization may occur during debinding and sintering, affecting the parts' magnetic, electric, physical, and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Effect of Thermal Debinding Conditions on the Sintered Density of Low-Pressure Powder Injection Molded Iron Parts

Tafti

Demers

Majdi

et al. 2021

Metals

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Low-pressure powder injection molding (LPIM) is a cost-effective technology for producing intricate small metal parts at high, medium, and low production volumes in applications which, to date, have involved ceramics or spherical metal powders. Since the use of irregular metal powders represents a promising way to reduce overall production costs, this study aims to investigate the potential of manufacturing powder injection molded parts from irregular commercial iron powders using the LPIM approach. To this end, a low viscosity feedstock was injected into a rectangular mold cavity, thermally wick-debound using three different pre-sintering temperatures, and finally sintered using an identical sintering cycle. During debinding, an increase in pre-sintering temperature from 600 to 850 °C decreased the number of fine particles. This decreased the sintered density from 6.2 to 5.1 g/cm3, increased the average pore size from 9 to 14 μm, and decreased pore circularity from 67 to 59%.

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Effect of Sintering Environment on Microstructures and Mechanical Properties of Metal Injection Molding Ti-6Al-4V Alloys

Li,

Zhang

et al. 2024

JOM

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Improving titanium injection moulding feedstock based on PEG/PPC based binder system

Cited by 14 publications

References 26 publications

Interactions of polymeric components in a POM-based binder system for titanium metal injection moulding feedstocks

Interactions of polymeric components in a POM-based binder system for titanium metal injection moulding feedstocks

Effect of Thermal Debinding Conditions on the Sintered Density of Low-Pressure Powder Injection Molded Iron Parts

Effect of Sintering Environment on Microstructures and Mechanical Properties of Metal Injection Molding Ti-6Al-4V Alloys

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