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Title: Effect of coating time on corrosion behavior of electroless nickel-phosphorus coated powder metallurgy iron specimens

Abstract

Powder metallurgy iron specimens with porosities in the range 0% to 2% were electroless coated with nickel-phosphorus alloy from baths containing sodium hypophosphite (NaH{sub 2}PO{sub 2}{center_dot}H{sub 2}O). The effect of coating time on thickness and phosphorus content of the deposit was analyzed. The free corrosion potentials and corrosion rates of the coated specimens were obtained by the Tafel extrapolation method in 1.0 M hydrochloric acid (HCl) solution. Corrosion rates of the coated specimens after heat treatment also were studied. The observed corrosion characteristics were explained by the mixed-potential theory.

Authors:
; ;  [1]
  1. Indian Inst. of Tech., Kanpur (India). Dept. of Materials and Metallurgical Engineering
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
103957
Resource Type:
Journal Article
Journal Name:
Corrosion
Additional Journal Information:
Journal Volume: 51; Journal Issue: 8; Other Information: PBD: Aug 1995
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; IRON; ELECTRODEPOSITED COATINGS; PROTECTIVE COATINGS; CORROSION; NICKEL ALLOYS; ELECTRODEPOSITION; PHOSPHORUS ADDITIONS; TIME DEPENDENCE; CHEMICAL COMPOSITION; POROSITY

Citation Formats

Singh, D, Balasubramaniam, R, and Dube, R K. Effect of coating time on corrosion behavior of electroless nickel-phosphorus coated powder metallurgy iron specimens. United States: N. p., 1995. Web. doi:10.5006/1.3293617.
Singh, D, Balasubramaniam, R, & Dube, R K. Effect of coating time on corrosion behavior of electroless nickel-phosphorus coated powder metallurgy iron specimens. United States. https://doi.org/10.5006/1.3293617
Singh, D, Balasubramaniam, R, and Dube, R K. 1995. "Effect of coating time on corrosion behavior of electroless nickel-phosphorus coated powder metallurgy iron specimens". United States. https://doi.org/10.5006/1.3293617.
@article{osti_103957,
title = {Effect of coating time on corrosion behavior of electroless nickel-phosphorus coated powder metallurgy iron specimens},
author = {Singh, D and Balasubramaniam, R and Dube, R K},
abstractNote = {Powder metallurgy iron specimens with porosities in the range 0% to 2% were electroless coated with nickel-phosphorus alloy from baths containing sodium hypophosphite (NaH{sub 2}PO{sub 2}{center_dot}H{sub 2}O). The effect of coating time on thickness and phosphorus content of the deposit was analyzed. The free corrosion potentials and corrosion rates of the coated specimens were obtained by the Tafel extrapolation method in 1.0 M hydrochloric acid (HCl) solution. Corrosion rates of the coated specimens after heat treatment also were studied. The observed corrosion characteristics were explained by the mixed-potential theory.},
doi = {10.5006/1.3293617},
url = {https://www.osti.gov/biblio/103957}, journal = {Corrosion},
number = 8,
volume = 51,
place = {United States},
year = {Tue Aug 01 00:00:00 EDT 1995},
month = {Tue Aug 01 00:00:00 EDT 1995}
}