Residual stress gradients in electroplated nickel thin films

Kilinc, Yasin; Ünal, Uğur; Alaca, B. Erdem

doi:10.1016/j.mee.2015.01.042

Cited by 14 publications

(2 citation statements)

References 30 publications

(34 reference statements)

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“…Based on this measurement, the elastic modulus of the beam is estimated as 162.5 GPa by using equation ( 6) and considering a mass density of 8.908 g cm −3 for the electroplated Ni (figure 3(e)). The residual stress is neglected in the fabricated µMR [37].…”

Section: Resultsmentioning

confidence: 99%

A deformation-based approach to tuning of magnetic micromechanical resonators

Bicer

Esfahani

Yalçınkaya

et al. 2018

J. Micromech. Microeng.

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Resonance frequency tuning in magnetic micromechanical resonators remains a primary field of study for frequency reference applications. The use of magnetic micromechanical resonators for innovative timing, oscillator and sensing applications necessitates a platform for the precise control of the resonance frequency. The present work addresses a deformation-based technique for tuning the resonance frequency of nickel micromechanical resonators. Frequency response is measured through magnetic actuation and optical readout. The tuning approach is based on a combination of flexural deformation and uniaxial strain. The bending deformation is achieved by using a DC current through the microbeam. This magnetomotive mechanism reduces the resonance frequency by about 13% for a maximum DC current of 80 mA. A substrate bending method is used for applying uniaxial strain to increase the resonance frequency by about 8%. A bi-directional frequency modulation is thus demonstrated by utilizing both deformation techniques. The interpretation of results is carried out by finite element analysis and electromechanical analogy in an equivalent circuit. Using deformation techniques, this study provides a rigorous approach to control the resonance frequency of magnetic micromechanical resonators.

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Section: Resultsmentioning

confidence: 99%

A deformation-based approach to tuning of magnetic micromechanical resonators

Bicer

Esfahani

Yalçınkaya

et al. 2018

J. Micromech. Microeng.

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“…Nickel deposits improve the appearance, extend the life and the performance of materials and products in different applications [3]. It is driven by numerous actual industrial or potential applications, such as deposition of protective, functional and decorative coatings, magnetic structures, micro-electromechanical systems, substrates for hydrogen evolution, codeposition of alloys or composite layers [4,5].…”

Section: Introductionmentioning

confidence: 99%

Influence of Bath Composition on the Structure and Properties of Nickel Coatings Produced by Electrodeposition Technique

Birlik¹,

Azem²

2018

deufmd

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Electrodeposited nickel coatings are extensively used in engineering applications due to their excellent corrosion and wear resistance and easy mechanical operation. The structural characteristics, corrosion and mechanical properties of nickel coatings are related to the deposition parameters; such as bath component, composition, current density, pH, deposition time and additives. Electrodeposition technique is one of the most technologically feasible and economical techniques for producing metallic coatings. Watts bath is the most commonly applied nickel electrodeposition bath. Aim of this study is to optimize Watts bath composition by changing nickel chloride concentration and to investigate structural, morphological, corrosion and mechanical properties of produced coatings. It was found that coatings prepared with 0.17M nickel chloride concentration in Watts bath present the better corrosion resistance and mechanical property.

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