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.

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.

EFFECTS OF pH ON Ni COATING ON POLY(ETHYLENE TEREPHTHALATE) SUBSTRATE BY PRINTING PRIME IN COMBINATION WITH PALLADIUM ACTIVATING

2016 ◽  
Vol 23 (05) ◽  
pp. 1650034
Author(s):  
JUNJUN HUANG ◽  
ZHIPING SUN ◽  
HONGZHI HUANG ◽  
QI LIU ◽  
MIN GAO ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Ethylene Terephthalate ◽  
Electroless Nickel ◽  
Face Centered Cubic ◽  
X Ray Diffraction ◽  
Poly Ethylene Terephthalate ◽  
Structural And Electrical Properties ◽  
Effects Of Ph ◽  
Poly Ethylene ◽  
Face Centered

In this work, the primer-printed and then self-assembled poly(ethylene terephthalate) (PET) sheets were plated when the bath pH increased from 7 to 11. The effects of bath pH on the structural and electrical properties of electroless nickel plating were investigated systematically using X-ray diffraction (XRD) and scanning electron microscopy (SEM). Results showed that the crystallographic structures of Ni-plated PET (NPP) sheets were face centered cubic, the preferential orientation of the coatings changes from (200) plane to (111) plane, the growth rate of plated nickel coating increased from 3.71[Formula: see text][Formula: see text]m/min to 8.13[Formula: see text][Formula: see text]m/min, the average Ni crystal size was increased from 0.23[Formula: see text][Formula: see text]m to 0.92[Formula: see text][Formula: see text]m, the average EMI-SE of NPP sheets was increased from 37.2[Formula: see text]dB to 38.6[Formula: see text]dB and the surface electrical resistivity of NPP sheets was decreased from 6235[Formula: see text]ohm [Formula: see text] cm to 0.03[Formula: see text]ohm [Formula: see text] cm with the increase of bath pH. The changes in structural and electrical properties were most possibly due to the fact that the thickness of coating increased.

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.

Research on Electroless Plating of Poly (Ethylene Terephthalate) Films by a New Palladiumfree Activation Process

2013 ◽  
Vol 750-752 ◽  
pp. 1954-1956
Author(s):  
Chun Wu ◽  
Wen Xin Ma ◽  
Ya Ping Chen ◽  
Yin Li ◽  
Yan Chen
Keyword(s):  
Electroless Plating ◽  
Ethylene Terephthalate ◽  
Activation Process ◽  
Surface Activation ◽  
Chemical Surface ◽  
Poly Ethylene Terephthalate ◽  
Nickel Particles ◽  
Poly Ethylene ◽  
Pet Film ◽  
Pet Films

In this essay the authors are seeking to examine a chemical surface activation process for NiP electroless plating of poly (ethylene terephthalate) (PET) films without using palladium catalyst, during which the nickel particles have been chelated with the C=O and COH groups of the carboxymethyl cellulose (CMC) on the PET film that are acting as a catalyst center for the electroless plating.

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