A New Zinc-Nickel Electroplating Process: Alternative to Cadmium Plating

1983 ◽  
Author(s):  
Grace F. Hsu
Keyword(s):  
Cadmium Plating ◽  
Nickel Electroplating ◽  
Electroplating Process ◽  
Zinc Nickel

High-Aspect-Ratio Electroplated Structures With 2μm Beamwidth

1999 ◽  
Author(s):  
Xiaobin Li ◽  
Siddharth Kiyawat ◽  
Hector J. De Los Santos ◽  
Chang-Jin “CJ” Kim
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Stress Gradient ◽  
Optimization Method ◽  
Nickel Layer ◽  
Driving Voltage ◽  
Aspect Ratios ◽  
Nickel Electroplating ◽  
Electroplating Process ◽  
Micro Structures

Abstract Narrow beamwidth is highly desirable for many micromechanical elements moving parallel to the substrate. A good example is the electrostatically driven flexure structure, whose driving voltage is determined by the width of the beam. This paper presents the process flow and the result of a high-aspect-ratio electroplating process using photoresist (PR) molds. Following a systematic optimization method, PR molds with aspect ratios up to 4.0 were fabricated with a beamwidth of only 2.1μm. Higher aspect ratios, up to 6.8, were achieved using PR double coating technique, with a beamwidth of 2.6μm. Using a Cr/Cu seed layer, nickel electroplating was successfully carried out to translate the PR molds into nickel micro-structures. We observed bend-down of the fully released nickel cantilevers that are over 8μm thick. Further investigation suggested a combined effect of residual stress gradient in the electroplated nickel layer and in-use stiction of the cantilever beams.

Nanocomposite Layers Obtained by Electro-Co-Deposition: Corrosion and Tribocorrosion Properties

2015 ◽  
Vol 227 ◽  
pp. 243-246 ◽  
Author(s):  
Lidia Benea
Keyword(s):  
Biomedical Applications ◽  
Industrial Applications ◽  
Hybrid Coatings ◽  
Nanostructured Surfaces ◽  
Micro Particles ◽  
Nickel Electroplating ◽  
Dispersed Phases ◽  
Electroplating Process ◽  
Ultra High Molecular Weight ◽  
Biocompatible Coatings

High dispersed nano and micro particles as ceramics (SiC, TiC, WC, Al2O3), polymers (UHMWPE) or bioceramics (TiO2, CeO2, ZrO2) have been deposited by electrochemical method with nichel or cobalt on metallic substrate to obtain novel structured composites, cermet or hybrid coatings with specific properties to be used in industrial or biomedical applications. The industrial applications for metal matrix based nanocomposites are increasing and open a way to biocompatible coatings. electrodeposition is considered to be one of the most important techniques for producing nanocomposites and nanostructured surfaces. Electrodeposition is exceptionally versatile, so that new and exciting applications are still being invented. The paper presents some results regarding the electro-co-deposition of dispersed phases as ZrO2, CeO2, SiC, WC, TiC or polymeric dispersed phases as UHMWPE (ultra high molecular weight polyethylene) during cobalt or nickel electroplating process in view of obtaining new advanced functional surfaces with improved properties to corrosion or tribocorrosion systems.

Design of experiments for statistical modeling and multi-response optimization of nickel electroplating process

2011 ◽  
Vol 89 (2) ◽  
pp. 136-147 ◽  
Author(s):  
Maria Poroch-Seritan ◽  
Sonia Gutt ◽  
Gheorghe Gutt ◽  
Igor Cretescu ◽  
Corneliu Cojocaru ◽  
...  
Keyword(s):  
Design Of Experiments ◽  
Statistical Modeling ◽  
Nickel Electroplating ◽  
Response Optimization ◽  
Electroplating Process

scholarly journals Evaluation of conventional standards of nickel electroplating process for surface finish layer of AISI 316L stainless steel using copper rod bars as cathode

2018 ◽  
Vol 49 ◽  
pp. 02002
Author(s):  
Patrick Munyensanga ◽  
Susilo A. Widyanto ◽  
Moh N.A. Aziz ◽  
Paryanto
Keyword(s):  
Stainless Steel ◽  
Surface Layer ◽  
Surface Finish ◽  
Surface Cleaning ◽  
Aisi 316L ◽  
Nickel Electroplating ◽  
Time Required ◽  
Electroplating Process ◽  
Surface Layer Quality

Nickel electroplating process at UD Barito Electroplating is a modern methodology installed in an open complex environment and at controlled temperature with trust consideration of specimen composition. The evaluation of process at UD Barito has been undertaken by considering Stainless steel AISI 316L as specimen through a conventional nickel electroplating process. This paper presents the proper scientifically tool to be used at UD Barito in order to meet the time required and the surface layer quality of the electroplated product. The use of ultrasonic to replace air compressor assembly does not cause any harm to the surface finish smoothness and the quality of plated specimen given that the process is conventional. Concerning the process of 10 min compared up to 15 min of the process at UD Barito; showed the facility of ultrasonic assisted the electroplating process. This process is also a useful method in maintenance activities for surface cleaning and for product surface-layer quality enhancement through the coating process. From the data analyzed, the specimen has a hydrogen embrittlement rate range between 20 to 65% of Rockwell scale HRC52.

scholarly journals PEMANFAATAN SAKARIN SEBAGAI ALTERNATIF PENGENDALI KOROSI BALING-BALING KAPAL

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Nani Mulyaningsih ◽  
Hadyan Hadyan
Keyword(s):  
Corrosion Rate ◽  
Sea Water ◽  
Low Carbon Steel ◽  
Raw Material ◽  
Metal Corrosion ◽  
Low Carbon ◽  
Fishing Vessels ◽  
Nickel Electroplating ◽  
Weight Loss Method ◽  
Electroplating Process

Corrosion is a metallic interaction with the environment that causes damage to the metal. Corrosion can also occur in fishing vessels, which are generally made of low carbon steel. This happens because the propeller works in a corrosive environment. Then the need for an alternative corrosion control so that the component is durable. The purpose of this study was to find out how much corrosion rate the ship propellers produced after the addition of saccharin on the nickel electroplating process. This study was conducted by specimen electroplating nickel with the addition of saccharin variation of (0.6 gram; 0.8 gram; and 1 gram). Then the results in corrosion test using sea water media. The corrosion rate is calculated using the weight loss method. After the calculated corrosion rate, then the effectiveness of saccharin is calculated. The results showed that nickel electroplating specimens with addition of 0.6 gram saccharin variation resulted in a corrosion rate of 75 mpy, 0.8 gram saccharin yielded a corrosion rate of 83.14 mpy, saccharin 1 gram of corrosion rate of 90.56 mpy, while raw material corrosion rate of 117.73 mpy.

Low-ammonia, high-speed palladium—nickel electroplating process for connector applications

2009 ◽  
Vol 107 (3) ◽  
pp. 22-26 ◽  
Author(s):  
Wan Zhang ◽  
Margit Clauss ◽  
Jonas Guebey ◽  
Felix Schwager
Keyword(s):  
High Speed ◽  
Nickel Electroplating ◽  
Electroplating Process

scholarly journals KEHILANGAN MASSA PADA LARUTAN HCL DAN NACl BAJA KARBON RENDAH HASIL ELEKTROPLATING TEMBAGA-NIKEL

2019 ◽  
Vol 4 (1) ◽  
pp. 15-20
Author(s):  
Ferry Budhi Susetyo ◽  
Siska Titik Dwiyati ◽  
Muhammad Teguh Pangestu
Keyword(s):  
Mass Loss ◽  
Nacl Solution ◽  
Copper Nickel ◽  
Copper Electroplating ◽  
Nickel Electroplating ◽  
Electroplating Process ◽  
Hcl Solution

AbstrakPenelitian ini bertujuan untuk mengetahui perilaku hasil elektroplating tembaga – nikel terhadap larutan 3.5% HCl dan 3.5% NaCl. Proses elektroplating terbagi menjadi 2 bagian yaitu elektroplating tembaga selama 10 menit, kemudian dilanjutkan dengan nikel selama 20 menit. Dari hasil penelitian yang dilakukan, didapatkan kesimpulan spesimen yang melakukan perendaman dengan larutan 3,5 % HCl memiliki kehilangan massa lebih besar dibandingkan dengan spesimen yang melakukan perendaman dengan larutan 3,5% NaCl. Kata kunci: elektroplating, tembaga, nikel, HCl, NaCl, korosi AbstractThis study aims to determine the behavior of copper-nickel electroplating on a solution of 3.5% HCl and 3.5% NaCl. The electroplating process is divided into 2 parts, copper electroplating for 10 minutes, then followed by nickel for 20 minutes. From the results of the research conducted, it was concluded that the specimens that immersed with a 3.5% HCl solution had a greater mass loss compared to the specimens which immersed with a 3.5% NaCl solution. Keywords: electroplating, copper, nickel, HCl, NaCl, corrosion

Production of Nano-Composite Hydroxyapatite-Based Coatings through Reverse Pulse Electroplating

2021 ◽  
Author(s):  
S M Nazmuz Sakib
Keyword(s):  
Response Surfaces ◽  
Fractional Factorial ◽  
Biological Behavior ◽  
Full Description ◽  
Time Duration ◽  
Nickel Electroplating ◽  
Pulse Reverse ◽  
Electroplating Process ◽  
Central Composite ◽  
Cathode Efficiency

Since the discovery of synthetic HAp in the 1950s, hydroxyapatite is becoming a significant covering material for bio implants. A regulated surface roughness/porosity, appropriate chemical resistance, and a desirable tri-biological behavior are required for HAp coatings. On substrates with a variety of structure, composition, size, and shape, the coating process must be applied at varied scales and at a fast enough rate. There is a full description of both dry and wet coating procedures included in this article. Cathode efficiency fell as tc- increased, although it was still better than DC coatings. In this paper, the mechanism of HAp electrodeposition is examined, as well as the effect of operational variables on deposit characteristics. Recent advances in the field are critically examined. HAp composite coatings, including those reinforced with metallic, ceramic, and polymeric particles, as well as nanotubes, modified graphene’s, chitosan, and heparin, are discussed in depth. On the other hand, a glance towards the future in the field of electrodeposited HAp coatings is taken. Different experimental parameters were explored to establish the optimal reaction conditions for HA-Ag nanocomposites. Pulse reverse plating (PRP) in combination with an anionic surfactant, sodium dodecylsulphate (SDS), was utilized for the first time to generate nanocomposite Co-Al2O3 electrodeposited coatings, using a technique similar to that used for Co – IF WS2 deposition in prior work. The optimal plating setups in the pulse-reverse electroplating (PRP) mechanism for non-anomalous plating of Co–Ni deposits (i.e., the metal composition of deposits equals that of the plating solutions) from chloride solutions were determined using experimental strategies such as fractional factorial design (FFD), path of steepest ascent, and central composite design (CCD) combined with the response surfaces (RSM). The FFD research found that the potentials and time duration of pulse-plating had a significant impact on the composition of Co–Ni deposits. The two parameters were the sharpest ascending route and the best circumstances for non-anomalous plating of Co–Ni layers. NiFe thin films produced by pulse reverse (PR) electrodeposition are potential alternatives for the next phase of core magnetic materials that will be utilized in high shifting frequency magnetic elements. For statistical modeling and analysis of the nickel electroplating process outcomes, the central composite experimental design and response surface technique were used. The empirical models developed in terms of design variables (current density J (A/dm2), temperature T (C), and pH) were found to be statistically adequate to describe the process responses, namely cathode efficiency Y%, coating thickness U (m), brightness V%, and hardness W%. (HV). The response surfaces were explored and analyzed using graphical representations consisting of 2D contour plots and 3D surface plots in order to determine the main, quadratic, and interaction effects. The desirability function method was used to do multi-response optimization of the nickel electroplating process. To this aim, a genetic algorithm was employed to solve the multi-response issue mathematically. The optimization method resulted in the Pareto optimum set, which is a collection of similar solutions.

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