PDF

Electropolishing behaviour and microstructures of copper deposits electroplated in an acidic copper-sulphuric bath with different thiourea contents

Ching An Huang, Jo Hsuan Chang

2014encopperelectropolishingthioureamicrostructureelectrodeposition

Abstract

Language:

Cu electrodeposition was performed on a rotating cylindrical Ti electrode in Cu-sulphate plating baths with different thiourea contents up to 8 ppm. The hardness, microstructure and electropolishing behaviour of the Cu deposits were studied. Some sulphur-rich particles in the Cu deposits prepared from the thiourea-containing baths were identified. The sulphur-rich particles dissolved preferentially during electropolishing in a 40 vol.% H3PO4 solution, forming a thin amorphous phase containing P in patches on the outer surface of the Cu deposit. The deposits prepared in the baths with thiourea showed higher dissolution current during polishing and formed a brightened and levelled surface with a surface roughness (Ra) lower than 30 nm.

Download

Cite This Work

@article{4edc65be-e852-4dac-8f1a-c801f40b5848,
  title={Electropolishing behaviour and microstructures of copper deposits electroplated in an acidic copper-sulphuric bath with different thiourea contents},
  author={Ching An Huang and Jo Hsuan Chang},
  year={2014},
  language={en}
}
TY  - JOUR
TI  - Electropolishing behaviour and microstructures of copper deposits electroplated in an acidic copper-sulphuric bath with different thiourea contents
AU  - Ching An Huang
AU  - Jo Hsuan Chang
PY  - 2014
LA  - en
ER  -

Similar Items

Treatment of manufacturing scrap TV boar

The leachability tests for manufacturing scrap TV boards (STVB) have indicated the release of metals beyond the limit levels with potential problems f

2026enPDF

Extractive Metallurgy of Copper, Fifth Edition Mark E. Schlesinger, Matthew J. King, Kathryn C. Sole, ( WeLib.org )

Mark E. Schlesinger, Matthew J. King

This book presents a comprehensive overview of the principles and practices of copper extraction metallurgy. The objective is to provide both a theore

2026enPDF

729490895 TFC Jordi kayombo

Copper solvent extraction units at large hydrometallurgical plants face constraints in metal recovery, phase disengagement, and reagent consumption, d

2026enPDF

Recovery of copper from alkaline glycine leach solution using solvent extraction

B.C. Tanda, E.A. Oraby

Glycine solutions in an alkaline environment have been shown to be able to leach copper from its oxide, native and sulfide minerals as a copper glycin

2017enPDF

Towards industrial implementation of glycine-based leach and adsorption technologies for gold-copper ores

J. J. Eksteen, E. A. Oraby

The technology to selectively leach gold, silver and base metals from ores, concentrates, and wastes, using an alkaline glycine solution, has initiat

2017enPDF

Study on the influence of various factors in the hydrometallurgical processing of waste printed circuit boards for copper and gold recovery

Ionela Birloaga, Ida De Michelis, Francesco Ferella, Mihai Buzatu, Francesco Vegliò

This study investigates the hydrometallurgical recovery of copper and gold from waste printed circuit boards (WPCBs) using a sequential oxidative leac

2013enPDF