scholarly journals EFFECT OF 5-OXA-2,8-DITHIANONANE ON THE ELECTROCHEMICAL NICKEL PLATING PROCESS

2022 ◽  
Vol 1 (15) ◽  
pp. 89-92
Author(s):  
Nina Sosnovskaya ◽  
Nikolay Korchevin ◽  
Boris Skulin
Keyword(s):  
Nickel Coating ◽  
Nickel Plating ◽  
Organic Additives

The article deals with the study of the properties of 5-oxa-2,8-dithianonane as a brightening additive. The research was carried out by obtaining a shiny nickel coating at different concentrations of organic additives and different modes of electrolysis

Electrodeposition of a nickel coating from a low-temperature acetate-chloride nickel-plating electrolyte

2015 ◽  
Vol 51 (3) ◽  
pp. 281-285 ◽  
Author(s):  
I. V. Antikhovich ◽  
A. A. Chernik ◽  
I. M. Zharskii ◽  
A. K. Bolvako
Keyword(s):  
Low Temperature ◽  
Nickel Coating ◽  
Nickel Plating

Effect on Electroless Nickel Coating on Magnesium Alloy by Nickel Electroless Plating Parameters

2011 ◽  
Vol 295-297 ◽  
pp. 1522-1525
Author(s):  
Xiao Min Wang ◽  
Jun Duo
Keyword(s):  
Magnesium Alloy ◽  
Process Parameters ◽  
Ph Value ◽  
Nickel Coating ◽  
Electroless Nickel ◽  
Molar Ratio ◽  
Electroless Nickel Plating ◽  
Nickel Plating ◽  
Optimum Conditions ◽  
Bath Stability

Electroless nickel plating on magnesium alloy was studied when NiSO4as the main salt in the solution. The influence of the composition of the solution and process parameters on the coating appearance, the plating rate and bath stability was studied too. As a result, the optimum conditions of electroless nickel are: The main salt and reducing agent molar ratio between 0.3 and 0.45, mixed complexion agents was used, temperature 90°C, pH value 6.5.

scholarly journals PROSPECTS FOR THE USE OF TRICHLOROETHYL AMIDES WITH THIOAMIDE FUNCTIONS IN THE TECHNOLOGY OF BRILLIANT NICKEL PLATING

2021 ◽  
Vol 1 (1) ◽  
pp. 101-102
Author(s):  
Dmitriy Shurupov ◽  
Yuliya Andreeva ◽  
Yuliya Balyueva ◽  
Nina Sosnovskaya ◽  
Igor' Rozencveyg
Keyword(s):  
Sulfate Electrolyte ◽  
Nickel Plating ◽  
Organic Additives ◽  
Nickel Coatings ◽  
Group A

The influence of organic additives in the nickel-plating sulfate electrolyte on the pos sibility of obtaining shiny coatings is investigated. The presence in the structure of the additive of trichloramide fragments and substituents containing a thiocarbonyl group-a residue of thiourea or rubeanoic acid, allows to obtain shiny nickel coatings without the introduction of additional reagents.

Kesan Perubahan Masa Penyaduran Tanpa Elektrik Aloi Nikel–Fosforus Terhadap Struktur Mikro Substrat dan Analisis Kekuatan Sadurannya

2012 ◽  
Author(s):  
M. N. Mohamad Ibrahim ◽  
M. E. Izat ◽  
A. L. Goh ◽  
A. Tuti Kartina ◽  
Z. Norhidaya
Keyword(s):  
Adhesion Strength ◽  
Nickel Coating ◽  
Lattice Structure ◽  
Acrylonitrile Butadiene Styrene ◽  
Electroless Nickel ◽  
Strength Test ◽  
Nickel Plating ◽  
Etching Solution ◽  
Layer Technique ◽  
Pre Treatment

Objektif utama kajian ini adalah untuk mengkaji kesan perubahan masa penyaduran tanpa elektrik aloi nikel–fosforus terhadap plastik akrilonitril–butadiena–stirena (ABS) yang bergred tidak boleh disadur dengan menggunakan teknik salutan lapisan bawah laker. Permukaan plastik ABS yang tidak dapat disadur diubah secara fizikal dengan menyalut satu lapisan nipis polimer untuk membentuk permukaan yang dapat disaduri logam. Kaedah ini menggunakan poliuretana sebagai lapisan bawah laker ke atas substrat sebelum dilakukan proses pra–rawatan seperti punaran sederhana, peneutralan, pengaktifan, pemecutan dan penyaduran ke atas substrat tersebut. Salutan poliuretana perlu dirawat pada suhu bilik selama 8 jam dan di dalam ketuhar pada 70°C selama 4 hari sebelum dijalankan langkah–langkah pra–rawatan. Substrat yang berjaya disadur kemudiannya dikaji permukaan mikronya, ketebalan logam nikel yang terenap pada masa penyaduran yang berbeza, struktur kekisi hablurnya dan juga kekuatan lekatan saduran nikel. Keputusan menunjukkan bahawa lebih lama masa penyaduran, lebih banyak logam nikel dan fosforus (> 90%) yang terenap dan lebih sempurna proses penyaduran permukaan substrat. Ketebalan logam yang direkodkan adalah antara 0.6289 μm dan 4.4010 μm. Struktur kekisi bagi aloi nikel–fosforus yang terbentuk didapati berbentuk hablur bagi semua masa penyaduran yang dikaji. Manakala bagi analisis kekuatan lekatan saduran nikel, didapati bahawa kekuatan lekatan saduran nikel bergantung kepada masa rendaman substrat di dalam larutan punaran. Kekuatan lekatan yang paling tinggi (0.3273 psi) terhasil bagi substrat yang direndam di dalam larutan punaran selama 5 minit. Kata kunci: Penyaduran nikel tanpa elektrik, ABS gred tidak boleh disadur, teknik salutan lapisan bawah laker, masa penyaduran, permukaan mikro, kekuatan lekatan saduran The main objective of this study is to investigate the effect of variation in plating time of nickel–phosphorus alloy which was plated electrolessly onto a non–platable grade acrylonitrile–butadiene–styrene (ABS) substrate using undercoating layer technique. The surface of the non–platable grade ABS plastic was physically modified by applying a thin layer of polymer to form a surface that is suitable for metallization. This method used polyurethane polymer as the undercoat layer which was applied onto the substrate before pretreatment processes such as mild etching, neutralization, activation and acceleration were done on the substrate. The undercoat polyurethane was treated at room temperature for 8 hours followed by treatment in an oven at 70°C for 4 days before it had undergone pre–treatment steps. The plated substrates were then tested for their properties such as microstructure, thickness of the plated nickel at different deposition times, lattice structure formed from this metallization method and the adhesion strength of the nickel coating. The results showed that the longer the metallization process, the greater the amount of nickel and phosphorus (> 90%) deposited and the more complete the plating process is. The thickness of the nickel plating was found to be between 0.6289 and 4.4010 μm. The lattice structure of the nickel–phosphorus formed in all deposition times studied was found to be crystalline. The analysis of the pull–off strength test showed that the adhesion strength of the nickel coating depends on the immersion time of the substrate into the etching solution. The highest pull–off strength test value (0.3273 psi) was achieved for the sample was immersed in the etching solution for 5 minutes. Key words: Electroless nickel plating, non–platable grade ABS, undercoat layer technique, deposition time, microstructure, coating adhesion strength

The Effects of Nickel-Plating on Al2O3 Particles Reinforced Steel Matrix Composites

2011 ◽  
Vol 117-119 ◽  
pp. 777-781
Author(s):  
Guo Shang Zhang ◽  
Yi Min Gao ◽  
Jian Dong Xing ◽  
Shi Zhong Wei ◽  
Ji Wen Li ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Nickel Coating ◽  
Hadfield Steel ◽  
Steel Matrix ◽  
Matrix Composites ◽  
Nickel Plating ◽  
Ceramic Particles ◽  
Chemical Plating ◽  
Powder Metallurgy Process ◽  
Reinforced Steel

The wettability between ceramic particles and metal play an important role in fabrication of ceramic particles reinforced metal matrix composites(PRMMCs). In present paper, Al2O3 particles were coated with nickel by chemical plating to modify the preparation and properties of Al2O3 particles reinforced steel matrix composites. Using the Al2O3 particles treated by chemical nickel-plating, Al2O3 particles reinforced steel matrix composites were fabricated by powder metallurgy process(PM). And the wear resistance of the composites was investigated. The results show that: the nickel coating can fully and tightly cover on the surface of Al2O3 particles, and the nickel coating thickness is uniform about 2~3 micron; The nickel coating can effectively improve the uniform distribution of Al2O3 particles in the composites. And the treated Al2O3 particles can be tightly bonded with steel matrix,which improve the wear resistance of composites. The wear resistance of composites reinforced treated and untreated Al2O3 particles each is 2.5 and 1.6 times of Hadfield steel.

scholarly journals TELLURIUM-CONTAINING GLOSS-FORMING AGENTS IN THE PROCESS OF ELECTROCHEMICAL NICKEL PLATING

2021 ◽  
Vol 1 (1) ◽  
pp. 49-50
Author(s):  
Pavel Lukashov ◽  
Valentina Nikonova ◽  
Nina Sosnovskaya ◽  
Nikolay Korchevin
Keyword(s):  
Current Density ◽  
Nickel Coating ◽  
Nickel Plating ◽  
Hull Cell ◽  
A Current

The effect of the addition of 1-methyl-1-telluracyclohexane iodide to the standard Watts electrolyte was studied using the Hull cell. It is shown that at a current density of 4 A/dm2, a temperature of 50 0C, a pH of 5.4, and a concentration of 0.2 g/l of the additive, a shiny nickel coating is formed.

THE ELECTROCHEMICAL PROPERTIES OF Li/FeS BATTERY USING ELECTROLESS NICKEL PLATED FeS POWDER

2008 ◽  
Vol 15 (01n02) ◽  
pp. 35-40 ◽  
Author(s):  
SUNG-HYUN KIM ◽  
YOUNG-JIN CHOI ◽  
DONG-HUN KIM ◽  
SUNG-HOON JUNG ◽  
KI-WON KIM ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Discharge Capacity ◽  
Nickel Coating ◽  
Electroless Nickel ◽  
High Energy ◽  
Ion Source ◽  
Metallic Nickel ◽  
Electroless Nickel Plating ◽  
Nickel Plating ◽  
Nickel Ion

In order to investigate the electrochemical properties of Li / FeS cell, FeS powder was fabricated by using a high-energy ball milling method. Then, surface of FeS powder was coated with metallic nickel. Nickel coating was conducted by using electroless nickel plating method. Nickel chloride ( NiCl 2 · 6 H 2 O ) was used as the nickel ion source for electroless nickel plating. The effects of nickel coating on the electrochemical properties of FeS electrode for Li/FeS cell were investigated by CV measurement and charge/discharge tests. Then, cells for electrochemical tests were assembled by stacking a lithium anode, separator containing liquid electrolyte, and FeS cathode in turn. From the results, electroless nickel plated FeS electrode showed very high initial discharge capacity of 581 mAh/g- FeS . And also, it showed higher discharge capacity than that of bare FeS electrode until the 29th cycle. Therefore, it is found that metallic nickel gives beneficial effects on enhancing the electrical conductivity of FeS cathode material. 82.47.Cb.

GROWTH MECHANISM OF NICKEL-PLATED COATING ON PRIMER-MODIFIED POLY(ETHYLENE TEREPHTHALATE) SHEET

2019 ◽  
Vol 26 (06) ◽  
pp. 1850212
Author(s):  
ZHIPING SUN ◽  
JUNJUN HUANG
Keyword(s):  
Growth Mechanism ◽  
Ethylene Terephthalate ◽  
Nickel Coating ◽  
Electroless Nickel ◽  
Lateral Growth ◽  
Electroless Nickel Plating ◽  
Nickel Plating ◽  
Poly Ethylene Terephthalate ◽  
Nickel Particles ◽  
Poly Ethylene

In this work, the growth mechanism of nickel-plated coating on primer-modified poly(ethylene terephthalate) (PET) sheets was investigated systematically. Results showed the surface structure of primer-modified PET sheets would chemisorb Sn and Pd, which are used as the catalyst for the electroless nickel plating. Nickel particles were formed on the plated PET surface. The crystal preferential orientation transformed from (200) plane to (111) plane and nickel particles grew with the increase of thickness of plated coating. The growth of nickel particles mainly included lateral growth and vertical growth. Cracks and then shed were formed in the nickel coating when the thickness exceeded about 228[Formula: see text]nm.

Nickel Plating

1892 ◽  
Vol 33 (848supp) ◽  
pp. 13545-13545
Keyword(s):  
Nickel Plating
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