Journal ArticleDOI
Effect of zwitterionic surfactant on tribological behaviour of electroless plating
R. Muraliraja,R. Elansezhian +1 more
TLDR
In this article, the effect of zwitterionic surfactant on coating thickness, surface structure, adhesion, specific wear rate and microhardness was studied, and the results indicated that there was an improvement in the properties of coated substrate.Abstract:
Zwitterionic surfactant consisting of positive and negative charges on its head is introduced in electroless alkaline bath to reduce the cost of electroless plating in industrial applications. The concentration of surfactant varied from 0 to 0·030 g L−1 insteps of 0·006 g L−1. The surfactant exhibits attractive and repulsive forces in the electrolyte used, and their corresponding influence on coating thickness, surface structure, adhesion, specific wear rate and microhardness was studied. The results indicated that there was an improvement in the properties of coated substrate. Scanning electron microscope image showed a unique blackberry shaped surface structure after adding the surfactant. Without zwitterionic surfactant, the coating thickness was 44·31 μm, and with surfactant at 0·018 g L−1, it was increased to 98·03 μm. The wear resistance of coated substrate was improved to 54% when compared with the substrate coated without surfactant. Without addition of surfactant, the microhardness was 43...read more
Citations
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Journal ArticleDOI
Wear and scratch behaviour of electroless Ni-P-nano-TiO2: Effect of surfactants
TL;DR: In this article, the effects of surfactants on microhardness, scratch, wear and friction behavior of the Ni-P-nano-TiO 2 composite coatings were investigated.
Journal ArticleDOI
Estimation of Zwitterionic Surfactant Response in Electroless Composite Coating and Properties of Ni–P–CuO (Nano)Coating
R. Muraliraja,R. Muraliraja,J. Sudagar,R. Elansezhian,A. V. Raviprakash,R. Dhinakaran,V.S. Shaisundaram,M. Chandrasekaran +7 more
TL;DR: In this article, Zwitterionic surfactant was introduced into the composite coating for the first time to increase the suspension of nanoparticles effectively during the coating process, which reduced the intermolecular attraction between the solid and liquid interfaces and eliminated the binding of the nanoparticles with the hydrogen gas bubbles.
Journal ArticleDOI
Recent advances in electroless nickel‑boron coatings
Journal ArticleDOI
Recent advances in electroless nickel‑boron coatings
TL;DR: In this article , the standard EN-B coatings and their properties and highlights the most recent improvements, variants in bath composition and process and applications of electroless nickel-boron; such as the production of lead and thallium-free coatings, the effect of ultrasonics and surfactants, composite and multi-alloy coatings.
References
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Book
Introduction to colloid and surface chemistry
TL;DR: In this paper, the colloidal state and structural characteristics of colloidal systems are classified into three categories: colloidal-micelle formation spreading, solid-gas-interfaces, and solid-liquid interfaces.
Journal ArticleDOI
Infrared Spectroscopy of Anionic, Cationic, and Zwitterionic Surfactants
TL;DR: In this article, Fourier transform infrared-attenuated total reflection (FTIR-ATR) spectroscopy was used to describe the ordering degree of anionic, cationic, and zwitterionic surfactants with the increase of their packing density on Ge substrate.
Journal ArticleDOI
Zwitterionic stationary phase with covalently bonded phosphorylcholine type polymer grafts and its applicability to separation of peptides in the hydrophilic interaction liquid chromatography mode
TL;DR: Compared to native silica before grafting, the newly synthesized zwitterionic material gave more stable retention times for basic peptides over pH range 3-7 due to elimination of the dissociation of silanol groups.
Journal ArticleDOI
Introduction to Colloid and Surface Chemistry
TL;DR: In this paper, the authors describe a set of Liganden, die eine Säuregruppe und eine Neutralgruppe in Molekül enthalten, wie Aminosäuren, und den Wert dos Buches für den Spezialisten wiedergibt.
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