Development a Cu-based Metal Powder for Selective Laser Micro Sintering

Dai, Cheng; Zhu, Haihong; Liu, Ke; Lei, Wenjuan; Chen, B J

doi:10.1088/1742-6596/276/1/012016

Cited by 4 publications

(3 citation statements)

References 9 publications

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“…The authors found that liquid‐phase sintering using copper−phosphorus alloy plays a key role in improving the densification of the microparts. [ 125 ] Hassanin et al [ 126 ] introduced a hybrid AM process to fabricate titanium microparts for biomedical applications, using powder bed fusion and micro‐EDM to enhance resolution and surface roughness of the printed parts. The roughness Ra of the AM microparts was improved down to 0.7 μm.…”

Section: Applicationsmentioning

confidence: 99%

Microadditive Manufacturing Technologies of 3D Microelectromechanical Systems

2021

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Conventional microfabrication processes have been well established, but their capabilities are generally limited simple and 2D extruded geometries. Additive manufacturing allows the ability to manufacture true 3D complex geometries, rapid design for manufacturing, mass customization, materials savings, and high precision, which have triggered the increased interest in manufacturing microelectromechanical systems (MEMS). Herein, MEMS manufacturing's recent advancements, including both conventional and additive manufacturing technologies, their working principles, and practical capabilities are consolidated. The use of additive manufacturing in several MEMS areas such as in microelectronics, circuitry, microfluidics, lab on a chip, packaging, and structural MEMS is also discussed in detail. Furthermore, the potentials and limitations of additive manufacturing are investigated with regard to the MEMS requirements. Finally, the technology outlook and improvements are discussed. This study shows that additive manufacturing offers a promising future for the fabrication of MEMS, especially using high‐resolution techniques such as microstereolithography, materials jetting, and materials extrusion. In contrast, current challenges such as materials requirements, equipment innovation, fabricating of in vivo devices for biomedical applications, inherited defects and poor surface finish, adhesion to substrates, and productivity are areas that require further study to increase the uptake by the MEMS community.

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Section: Applicationsmentioning

confidence: 99%

Microadditive Manufacturing Technologies of 3D Microelectromechanical Systems

2021

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“…The layers can be physically constructed in a number of ways depending on the type of 3D printer being used. Powder can be spread onto a tray and then solidified in the required pattern with the application of a liquid binder [3], by sintering with a laser [4] or by melting with an electron beam [5]. Some machines carry out 3D lithographic processes using light and photosensitive resins [6] and others deposit filaments of molten plastic [7].…”

Section: Introductionmentioning

confidence: 99%

Using a magnetite/thermoplastic composite in 3D printing of direct replacements for commercially available flow sensors

Leigh

Purssell

Billson

et al. 2014

Smart Mater. Struct.

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“…Chen et al (2003) fabricated micro-parts with SLMS by using an ultrasonic device to deposit micron powder particles to form a thin pattern on the substrate. Till now, Regenfuss et al (2005Regenfuss et al ( , 2007aRegenfuss et al ( , b, 2008, Streek et al (2008, and Dai et al (2011) have fabricated metal, oxide and non-oxide ceramics micro-parts successfully using SLMS.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Q‐switch parameters on the sintering behavior of laser micro sintering Cu‐based metal powder using Q‐switched Nd‐YAG laser

Zhu

Liu

Lei

et al. 2013

Rapid Prototyping Journal

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Purpose -The purpose of this paper is to investigate the effect of the Q-switching parameters on the sintering behavior of laser micro sintering Cu-based metal powder, using Q-switched 1064 nm Nd-YAG laser. Design/methodology/approach -An experimental study has been performed. Metal powder mixture with Cu and Cu-P alloy powders has been utilized. Q-switching duration of 15 ms , 25 ms, rate of 25 kHz , 45 kHz have been used. Findings -The results show that as the Q-switching rate and duration increases, the peak laser power decreases and the densification enhances. However, an optimal peak laser power exists and if the peak laser power is too low, the density of the sample is also low. The densification regime of laser micro-sintering is not only caused by the liquid phase filling the pores, but is also caused by the Cu powder migrating and by coalescence, e.g. including initial stage and intermediate stage of the traditional furnace liquid phase sintering. However, the degree of these stages depends on the peak power and input laser energy. Originality/value -The effect of the Q-switching parameters on sintering behavior of laser micro sintering Cu-based metal powder using Q-switched 1064 nm Nd-YAG laser has been obtained. It is found that the densification behavior is Q-switching parameters dependent, although the average laser power is same. The densification regime of laser micro-sintering includes initial stage and intermediate stage of the traditional furnace liquid phase sintering, but the degree is Q-switching parameters dependent.

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Development a Cu-based Metal Powder for Selective Laser Micro Sintering

Cited by 4 publications

References 9 publications

Microadditive Manufacturing Technologies of 3D Microelectromechanical Systems

Microadditive Manufacturing Technologies of 3D Microelectromechanical Systems

Using a magnetite/thermoplastic composite in 3D printing of direct replacements for commercially available flow sensors

Effect of the Q‐switch parameters on the sintering behavior of laser micro sintering Cu‐based metal powder using Q‐switched Nd‐YAG laser

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