Hard chromium plating under reduced pressure

Erkki Muttilainen, Pekka Tunturi

Research output: Book/ReportReportProfessional

Abstract

The use of the reduced pressure method in hard chromium plating is investigated. The properties of deposited coatings are tested with various methods. The main object of the work is to study the corrosion resistance and the porosity of the coating. Other properties like the hardness, surface profiles and the microstructure of the coating are also investigated. It is shown that hard chromium coatings having the best properties are obtained by the reduced pressure method by using the SRHS-electrolyte at high bath temperatures (59 - 61 °C) with a low current density (about 30 A/dm2). The chromium coatings deposited in these conditions have a very good corrosion resistance and a low porosity. Further, the current efficiency of coating is decreased as compared with chromium coatings deposited with the conventional plating methods.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages31
ISBN (Print)951-38-1893-4
Publication statusPublished - 1983
MoE publication typeD4 Published development or research report or study

Publication series

NameTiedotteita / Valtion teknillinen tutkimuskeskus
PublisherVTT
Volume266

Fingerprint

plating
chromium
coatings
corrosion resistance
porosity
low currents
baths
hardness
electrolytes
current density
microstructure
profiles

Cite this

Muttilainen, E., & Tunturi, P. (1983). Hard chromium plating under reduced pressure. Espoo: VTT Technical Research Centre of Finland. Valtion teknillinen tutkimuskeskus. Tiedotteita, No. 266
Muttilainen, Erkki ; Tunturi, Pekka. / Hard chromium plating under reduced pressure. Espoo : VTT Technical Research Centre of Finland, 1983. 31 p. (Valtion teknillinen tutkimuskeskus. Tiedotteita; No. 266).
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abstract = "The use of the reduced pressure method in hard chromium plating is investigated. The properties of deposited coatings are tested with various methods. The main object of the work is to study the corrosion resistance and the porosity of the coating. Other properties like the hardness, surface profiles and the microstructure of the coating are also investigated. It is shown that hard chromium coatings having the best properties are obtained by the reduced pressure method by using the SRHS-electrolyte at high bath temperatures (59 - 61 °C) with a low current density (about 30 A/dm2). The chromium coatings deposited in these conditions have a very good corrosion resistance and a low porosity. Further, the current efficiency of coating is decreased as compared with chromium coatings deposited with the conventional plating methods.",
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Muttilainen, E & Tunturi, P 1983, Hard chromium plating under reduced pressure. Valtion teknillinen tutkimuskeskus. Tiedotteita, no. 266, VTT Technical Research Centre of Finland, Espoo.

Hard chromium plating under reduced pressure. / Muttilainen, Erkki; Tunturi, Pekka.

Espoo : VTT Technical Research Centre of Finland, 1983. 31 p. (Valtion teknillinen tutkimuskeskus. Tiedotteita; No. 266).

Research output: Book/ReportReportProfessional

TY - BOOK

T1 - Hard chromium plating under reduced pressure

AU - Muttilainen, Erkki

AU - Tunturi, Pekka

PY - 1983

Y1 - 1983

N2 - The use of the reduced pressure method in hard chromium plating is investigated. The properties of deposited coatings are tested with various methods. The main object of the work is to study the corrosion resistance and the porosity of the coating. Other properties like the hardness, surface profiles and the microstructure of the coating are also investigated. It is shown that hard chromium coatings having the best properties are obtained by the reduced pressure method by using the SRHS-electrolyte at high bath temperatures (59 - 61 °C) with a low current density (about 30 A/dm2). The chromium coatings deposited in these conditions have a very good corrosion resistance and a low porosity. Further, the current efficiency of coating is decreased as compared with chromium coatings deposited with the conventional plating methods.

AB - The use of the reduced pressure method in hard chromium plating is investigated. The properties of deposited coatings are tested with various methods. The main object of the work is to study the corrosion resistance and the porosity of the coating. Other properties like the hardness, surface profiles and the microstructure of the coating are also investigated. It is shown that hard chromium coatings having the best properties are obtained by the reduced pressure method by using the SRHS-electrolyte at high bath temperatures (59 - 61 °C) with a low current density (about 30 A/dm2). The chromium coatings deposited in these conditions have a very good corrosion resistance and a low porosity. Further, the current efficiency of coating is decreased as compared with chromium coatings deposited with the conventional plating methods.

M3 - Report

SN - 951-38-1893-4

T3 - Tiedotteita / Valtion teknillinen tutkimuskeskus

BT - Hard chromium plating under reduced pressure

PB - VTT Technical Research Centre of Finland

CY - Espoo

ER -

Muttilainen E, Tunturi P. Hard chromium plating under reduced pressure. Espoo: VTT Technical Research Centre of Finland, 1983. 31 p. (Valtion teknillinen tutkimuskeskus. Tiedotteita; No. 266).