GB/T 26108-2010Trivalent chromium electroplating - Specification (English PDF)

1 Scope

This standard specifies the trivalent chromium plating solution test method and trivalent chromium coating technical requirements. Also provides a trivalent chromium plating solution in three

Method for the determination of chromium and verification of hexavalent chromium.

This standard applies to decorative protective nickel-nickel chromium and nickel-chromium plating with trivalent chromium plating chrome plating.

Note. from the environmental factors, hexavalent chromium is the environment of high-intensity pollution of the price, human or animal absorption of hexavalent chromium, very difficult to metabolize. Trivalent chromium effect

Is less, less process sludge. Replacing hexavalent chromium plating with trivalent chromium can reduce the risk to the environment.

2 normative reference standard

The terms of the following documents are hereby incorporated by reference into this standard. Whichever is the date of the reference file, which is followed by all (Excluding corrigenda) or revisions do not apply to this standard, however, encourage the parties to reach an agreement under this standard

Whether you can use the latest version of these files. For undated references, the latest edition applies to this standard.

Terminology of metal plating and chemical treatment and related processes GB/T GB/T 4955 Thickness measurement of metal coating layer Anodic dissolution Coulometric method (GB/T 4955-2005, ISO 2177.

2003, IDT)

Evaluation of Adhesive Strength of Metal Coatings on Electrode Deposited and Chemical Deposited on GB/T 5270 Metal Substrate (GB/T 5270-2005, ISO 2819. 1980, IDT)

GB/T 6461 Metal and other inorganic coatings on metal substrates Tested after corrosion test specimens and test pieces (GB/T 6461-2002, ISO 10289..1999, IDT)

GB/T 7466 Determination of total chromium in water quality

GB/T 9797 metal coating nickel-chromium and copper-nickel-chromium plating (GB/T 9797-2005, ISO 1456..2003,

IDT)

GB/T 12334 Definitions and general rules for thickness measurement of metals and other non-organic coatings (GB/T 12334-2001,

ISO 2064..1996, IDT)

GB/T 12600 metal coating on the nickel-chromium plating on plastic (GB/T 12600-2005, ISO 4525..2003, IDT)

GB/T 16921 Thickness measurement of metal coating layer X-ray spectroscopy (GB/T 16921-2005, ISO 3497.

2000, IDT)

JB/T 7704.1 Electroplating solution test method Hall tank test

JB/T 7704.2 Electroplating solution - Test method - Coverage test

JB/T 7704.3 Electroplating solution test method Cathode current efficiency test

JB/T 7704.4 Electroplating solution - Test method - Dispersion test

3 Terms and Definitions

GB/T 3138, GB/T 12334 and the following terms and definitions apply to this standard.