316 L Stainless Steel Powder Densification during the Coupled Multi-Fields Activated Micro-Forming

Huang, Kunlan; Yang, Yi; Qin, Yi; Yang, Gang

doi:10.1080/10426914.2012.677910

Cited by 16 publications

(12 citation statements)

References 22 publications

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“…This phenomenon supports the statement in Sect. 1 about the forming of the electrical densification process [6].…”

Section: Properties Of the Sintered Samplesmentioning

confidence: 99%

“…Thus, it is the reason why conventional powder sintering takes a long time to become completed [5]. Using the forming and electrical-field activated powder sintering process, the densification can be achieved more quickly, by deformation and breakage of the powder particles [6]. Based on this finding, it is important for the particle-changing process to be present in order to achieve satisfactory and quick densification of micro-parts [6].…”

Section: Introductionmentioning

confidence: 99%

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Forming of titanium and titanium alloy miniature-cylinders by electrical-field activated powder sintering and forming

Zulkipli

Qin

Huang

et al. 2015

MATEC Web of Conferences

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Abstract. As demands on miniature products increase significantly, a rapid process and production system for high-throughput, highly flexible and cost-efficient volume production of miniaturised components made from a wide range of materials is needed. A novel and electrical-field-activated sintering and forming process shows the potential to produce solid parts from powder material without any binder. Using titanium (Ti) and titanium alloy (90Ti10Sn) powder material, several processing parameters have been investigated, such as pressure, heating rate, heating temperature and holding time, which helped to contribute to the optimum result. In this study, using graphite dies, graphite punches and tungsten carbide punches, solid samples were produced, having a cylinder shape of Ø4.00 mm × 4.00 mm. Several properties of the solid Ti and 90Ti10Sn samples, such as density, hardness and the microstructures, were examined, and these showed that good results have been obtained.

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“…This phenomenon supports the statement in Sect. 1 about the forming of the electrical densification process [6].…”

Section: Properties Of the Sintered Samplesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Forming of titanium and titanium alloy miniature-cylinders by electrical-field activated powder sintering and forming

Zulkipli

Qin

Huang

et al. 2015

MATEC Web of Conferences

Self Cite

View full text Add to dashboard Cite

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“…The main differences between this process with SPS and others are: AC current applied for high heating efficiency; larger heating rate-, holding time-and pressure-dependent densification; and moreover, simplified process setup and control. Encouraging findings have been made using Micro-FAST with metallic materials [5,6]; however, the feasibility of forming ceramic materials still needs to be investigated further.…”

Section: Introductionmentioning

confidence: 99%

Forming of micro-components by electrical-field activated sintering

Zhao

Qin

Huang

et al. 2015

MATEC Web of Conferences

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Abstract. Recent research work has been undertaken to investigate the feasibility of forming micro-components by combining Electrical-field activated sintering and microforming (Micro-FAST). This paper firstly introduces the Micro-Fast technology and experimental validation method employed. Cylindrical components were used for the experiments and the sintering and forming was realised by use of a Gleeble 3800 thermalmechanical simulator. Thirteen different types of powders (metallic and ceramic) with variable particle sizes have been formed successfully. The influential parameters, such as pressure, temperature and heating rate, were studied. From the experiment results it is shown that the component quality depends significantly on the pressure, the heating rate and maximum temperature applied. Compared to other sintering technologies, the relatively short forming-cycle time of Micro-Fast (increased heating rate and reduced holding time) makes a good contribution to highly efficient particulate sintering for micro-manufacturing.

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“…mechanical or functional properties offers possibilities for a diverse range of applications [1][2][3][4][5][6][7]. In particular, metallic miniature parts already find applications in high sensitive temperature transducers and pressure sensors, high precision resistors and capacitors, wearable biomedical devices and ultra high speed inkjet printers.…”

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confidence: 99%

Production of high-precision micro metallic components by electroforming process

Liu

Hassanin

et al. 2016

Materials and Manufacturing Processes

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Abstract:In this study nickel (Ni) micro components with high precision were produced by electroforming using a soft mould produced by softlithgrahpy and photolithgraphy techniques. The effects of current densities on the microstructures and mechanical properties of the fabricated micro components were studied. It is found that a high precision soft mould was sucessfully fabricated and micro Ni gears with sharp walls and fine features were produced. A feature size as small as approximately 70 μm, a height of 380μm and a pitch diameter of 3 mm were achieved for the gear. The densities of the gears electroformed are found to be within the range between 5.24 and 2.95 g/cm 3 when current densities utilized vary between 50 and 10 mA/cm 2 . A lower current density leads to a finer microstructure and a larger value of microhardness. Meanwhile, by changing the current density from 50 to 10 mA/cm 2 , the grain size decreases from around 50 to 30 nm while the microhardness increases from 220 to 410. In addition, the preferred orientation of the Ni matrix changes from (111) to (200) or (220) with the decreasing current density.

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316 L Stainless Steel Powder Densification during the Coupled Multi-Fields Activated Micro-Forming

Cited by 16 publications

References 22 publications

Forming of titanium and titanium alloy miniature-cylinders by electrical-field activated powder sintering and forming

Forming of titanium and titanium alloy miniature-cylinders by electrical-field activated powder sintering and forming

Forming of micro-components by electrical-field activated sintering

Production of high-precision micro metallic components by electroforming process

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