Object comprising a chromium-based coating with a high Vickers hardness, production method, and aqueous electroplating bath therefor

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United States of America Patent

PATENT NO 12006586
APP PUB NO 20230129051A1
SERIAL NO

17996632

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Abstract

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An object comprising a chromium-based coating on a substrate is disclosed, wherein the chromium is electroplated from an aqueous electroplating bath comprising trivalent chromium cations, wherein the chromium-based coating comprises 87-98 weight-% of chromium, 0.3-5 weight-% of carbon, and 0.1-11 weight-% of nickel and/or iron, and wherein the chromium-based coating has a Vickers microhardness value of 1000-2000 HV, and wherein the chromium-based coating does not contain chromium carbide. Further is disclosed a method for its production, and an aqueous electroplating bath.

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Patent Owner(s)

Patent OwnerAddress
SAVROC LTD70620 KUOPIO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Räisä, Jussi Kuopio, FI 9 44
Yli-Pentti, Arto Klaukkala, FI 5 1

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