Hardness variation and corrosion behavior of as-plated and annealed Cr-Ni alloy deposits electroplated in a trivalent chromium-based bath

Ching An Huang; Che Kuan Lin; Chao Yu Chen

doi:10.1016/j.surfcoat.2009.05.047

Hardness variation and corrosion behavior of as-plated and annealed Cr-Ni alloy deposits electroplated in a trivalent chromium-based bath

Ching An Huang^*, Che Kuan Lin, Chao Yu Chen

^*Corresponding author for this work

Department of Mechanical Engineering

Chang Gung University

Research output: Contribution to journal › Journal Article › peer-review

44 Scopus citations

Abstract

Cr-Ni alloy deposits with various concentrations of Cr, Ni were obtained with different electroplating current densities in a plating bath containing trivalent chromium and divalent nickel ions. The Cr-rich alloy deposit with a very high hardness of 1150 Hv can be obtained by annealing at 700 °C for 30 min. These alloys displayed poor corrosion resistance due to through-deposit cracking during annealing. For optimal hardness and corrosion resistance, we recommend a sequential two-step electrodeposition with Ni-rich alloy electroplating followed by Cr-rich alloy electroplating, or Cr/Ni alloy electrodeposition, to create a protective coating.

Original language	English
Pages (from-to)	3686-3691
Number of pages	6
Journal	Surface and Coatings Technology
Volume	203
Issue number	24
DOIs	https://doi.org/10.1016/j.surfcoat.2009.05.047
State	Published - 15 09 2009

Keywords

Corrosion
Cr-Ni alloy deposit
Hardness
Through-deposit cracking
Trivalent chromium

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10.1016/j.surfcoat.2009.05.047

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title = "Hardness variation and corrosion behavior of as-plated and annealed Cr-Ni alloy deposits electroplated in a trivalent chromium-based bath",

abstract = "Cr-Ni alloy deposits with various concentrations of Cr, Ni were obtained with different electroplating current densities in a plating bath containing trivalent chromium and divalent nickel ions. The Cr-rich alloy deposit with a very high hardness of 1150 Hv can be obtained by annealing at 700 °C for 30 min. These alloys displayed poor corrosion resistance due to through-deposit cracking during annealing. For optimal hardness and corrosion resistance, we recommend a sequential two-step electrodeposition with Ni-rich alloy electroplating followed by Cr-rich alloy electroplating, or Cr/Ni alloy electrodeposition, to create a protective coating.",

keywords = "Corrosion, Cr-Ni alloy deposit, Hardness, Through-deposit cracking, Trivalent chromium",

author = "Huang, {Ching An} and Lin, {Che Kuan} and Chen, {Chao Yu}",

year = "2009",

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TY - JOUR

T1 - Hardness variation and corrosion behavior of as-plated and annealed Cr-Ni alloy deposits electroplated in a trivalent chromium-based bath

AU - Huang, Ching An

AU - Lin, Che Kuan

AU - Chen, Chao Yu

PY - 2009/9/15

Y1 - 2009/9/15

N2 - Cr-Ni alloy deposits with various concentrations of Cr, Ni were obtained with different electroplating current densities in a plating bath containing trivalent chromium and divalent nickel ions. The Cr-rich alloy deposit with a very high hardness of 1150 Hv can be obtained by annealing at 700 °C for 30 min. These alloys displayed poor corrosion resistance due to through-deposit cracking during annealing. For optimal hardness and corrosion resistance, we recommend a sequential two-step electrodeposition with Ni-rich alloy electroplating followed by Cr-rich alloy electroplating, or Cr/Ni alloy electrodeposition, to create a protective coating.

AB - Cr-Ni alloy deposits with various concentrations of Cr, Ni were obtained with different electroplating current densities in a plating bath containing trivalent chromium and divalent nickel ions. The Cr-rich alloy deposit with a very high hardness of 1150 Hv can be obtained by annealing at 700 °C for 30 min. These alloys displayed poor corrosion resistance due to through-deposit cracking during annealing. For optimal hardness and corrosion resistance, we recommend a sequential two-step electrodeposition with Ni-rich alloy electroplating followed by Cr-rich alloy electroplating, or Cr/Ni alloy electrodeposition, to create a protective coating.

KW - Corrosion

KW - Cr-Ni alloy deposit

KW - Hardness

KW - Through-deposit cracking

KW - Trivalent chromium

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DO - 10.1016/j.surfcoat.2009.05.047

M3 - 文章

AN - SCOPUS:67649884528

SN - 0257-8972

VL - 203

SP - 3686

EP - 3691

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

IS - 24

ER -

Hardness variation and corrosion behavior of as-plated and annealed Cr-Ni alloy deposits electroplated in a trivalent chromium-based bath

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Keywords

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