Nickel electroplating on copper pre-activated Al alloy in the electrolyte containing PEG1000 as an additive

Guan, Jie; Wang, Jinwei; Zhang, Dawei

doi:10.1007/s00339-018-1861-5

Cited by 5 publications

(1 citation statement)

References 28 publications

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“…Diameters of these colloids were approximately 25 to 100 Å. After sensitization, the surface was metallized with palladium (Pd) by oxidizing normalSn2+ to normalSn4+ and reducing normalPd2+ ions to Pd atoms using an activation solution since Ni tools have superior properties such as resistance to corrosion and minor scratches [22–26]. Additionally, Ni tools may be fabricated with micrometer level sensitivity and very low residual stresses via electroforming [14, 27–33].…”

Section: Introductionmentioning

confidence: 99%

Examination of the metallization behaviour of an ABS surface

Ünlü,

Öz,

Erdoğan

et al. 2023

Surface Engineering

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The main scope of this work is the metallization of high density Acryonitrile Butadiene Styrene (ABS) surfaces for aerospace applications. Originality and main focused area of the study is to grasp the mechanism of physical properties of the surface and the effect of wet chemical processes on the surface of the ABS substrate. After surface sensitization and metallization with nano-sized ions, the polyurethane surface is metallized and nickel (Ni) coated with electroless and elecrolytic Ni plating processes. The ultimate goal of these advances is the production of composite lay-up tools for the production of primary and secondary composite aircraft parts from nanoscale to macro level. Composite lay-up tool requirements of the aerospace industry include a minimum thickness of 5 mm, acceptability of airtightness testing and reduced surface roughness. Results show that increasing current density adversely affects the surface morphology and metallization processes enhance the surface conductivity of the foam.

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Section: Introductionmentioning

confidence: 99%

Examination of the metallization behaviour of an ABS surface

Ünlü,

Öz,

Erdoğan

et al. 2023

Surface Engineering

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Ultralow‐Voltage Frequency Tunning of Liquid Crystal‐Based GHz Antenna via Nanoscratching Method

Lee,

Park,

Chi

et al. 2024

Adv Materials Technologies

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Liquid crystal (LC)‐based radio‐frequency (RF) tunable antennas garner attention because of their compact size and minimal heat generation. Exploiting the LC's property to alter the RF permittivity depending on its alignment, voltage‐induced orientational switching enables frequency modulation of the radiated wave. To ensure dependable antenna performance, precise control of the initial LC alignment is crucial, which is conventionally achieved by polyimide (PI) coating followed by the rubbing process (PI‐rubbing). However, this approach demands high temperature (200 °C) and prolonged processing time (2 h), while also necessitating high voltage for LC reorientation due to induced excessive surface polar anchoring strength. Here, a PI‐free‐nanoscratching method creating 1D channels is introduced that induces initial LC alignment in a desired direction. The initial orienting capability of the scratched metal surface is superior to that of the PI‐rubbed surface. Furthermore, the LC‐based antenna employing the nanoscratching method shows a remarkable resonance frequency shift of up to 3 GHz with a low voltage of 2 V. This driving voltage is five times lower than that of antennas using the conventional PI‐rubbing method, which can open a new era for the next generation LC‐antenna.

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