Standard Test Method for Chloride Resistance Test for Chromium Electroplated Parts (Russian Mud Test)

Importancia y uso:

3.1 This test replicates in the laboratory the corrosive actions of a film containing hygroscopic chlorides and solid material (mud) on electroplated chromium. The test’s reactive media, the test slurry, was developed to simulate the film found on electroplated chromium deposits during a winter in Russia, thus the common name for the test, Russian Mud Test.

3.2 This test is used for specification acceptance, simulated service evaluation, manufacturing control, and research and development. It was developed specifically for use on components with electrodeposited chromium coatings exposed to hygroscopic chlorides. Test and production specimens may be used. Use of a standardized test could help in developing improved quality of chromium electrodeposited components and lead to the development of improved electroplated chromium systems.

3.3 This test simulates the amount of electrodeposited decorative and functional chromium deposit lost when exposed to the combination of “mud/solid material” and hygroscopic chlorides, most commonly calcium chloride. The metric is the loss of only the chromium and adjacent nickel layer. Other tests used with nickel/chromium electroplated components, such as CASS (Test Method B368), simulate the resistance of the part to basis metal corrosion involving all of the component’s deposits and substrate.

Subcomité:

B08.10

Referida por:

B0456-17R22

Volúmen:

02.05

Número ICS:

25.220.40 (Metallic coatings)

Palabras clave:

chloride; chromium; corrosion; decorative; electroplating; finishes; functional; Russian Mud;