Injection Molding of Electrolytic Copper Powder.

Wada, Noriyuki; Kankawa, Yoshimitsu; Kaneko, Yasunari

doi:10.2497/jjspm.44.596

Cited by 4 publications

(2 citation statements)

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“…In comparison, an isothermal hold at 700uC in hydrogen for 2 h was found to be optimal for electrolytic copper powders processed by injection moulding. 14 Process route on densification Apparently, in the temperature range investigated, the sintered densities of injection moulded specimens were lower than those of press and sintered ones. Overall, the highest sintered density of the injection moulded specimens was 95% theoretical, while that for the press and sintered ones was 98%.…”

Section: Reduction Of Surface Oxides On Densificationmentioning

confidence: 93%

Injection moulding of oxide reduced copper powders

Chan¹,

Chuang²,

Lin

2005

Powder Metallurgy

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Fine oxide reduced copper powders of about 10 mm mean grain size are irregular in particle shape and high in oxygen content, which poses a difficulty in achieving good properties from injection moulding. Injection moulding was possible when a multicomponent binder with a large fraction of the backbone polymer was used. Injection moulded parts could be sintered to a density of about 95% theoretical, if reduction of the residual oxides in the powder was effectively carried out prior to closure of pores during sintering. Under such a condition, the injection moulded parts could attain an electrical conductivity higher than 80% of pure copper.

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Section: Reduction Of Surface Oxides On Densificationmentioning

confidence: 93%

Injection moulding of oxide reduced copper powders

Chan¹,

Chuang²,

Lin

2005

Powder Metallurgy

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“…Metal injection moulding of electrolytic copper powder and some Cu-Ni alloys are described in other reports. [3][4][5] Wada et al studied the influence of hydrogen treatment on the green and sintered bodies produced from electrolytic copper powders by MIM owing to the great influence of the carbon and oxygen content in the sintering process. A similar study, also by the same researchers, was presented using Cu-Ni alloy or Cu, Ni powder mixtures.…”

Section: Introductionmentioning

confidence: 99%

Metal injection moulding of bronze using thermoplastic binder based on HDPE

Herranz¹,

Várez²,

Torralba³

et al. 2007

Powder Metallurgy

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In the present work, the injection moulding process of a Cu-10Sn bronze has been studied. Different formulations of binders based on high density polyethylene, paraffin wax and polyethylene glycol have been used. The optimisation of the metallic load is based on torque measurements and rheological studies. The optimum powder loading was 60 vol.-%. The moulding parameters are selected to obtain homogeneous specimens with three different geometries and without distortions. The green parts have an adequate strength for handling. The organic binder was eliminated by thermal debinding under N 2 /10%H 2 atmosphere. The debinding process has been designed by means of thermogravimetrical analysis of binder and feedstock and considering the maximum heating rates at which the samples do not present cracks. The specimens were sintered at temperatures between 875 and 950uC in the same reducing atmosphere.

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