ASTM-B343 Standard Practice for Preparation of Nickel for Electroplating with Nickel

ASTM-B343 - 1992A R14 EDITION - CURRENT
Show Complete Document History

Document Center Inc. is an authorized dealer of ASTM standards.
The following bibliographic material is provided to assist you with your purchasing decision:


This practice summarizes well-known, generally practical methods for producing adherent electrodeposits of nickel on nickel. The types of nickel for which an overplate of nickel may be desired are dull nickel, semi-bright nickel, bright nickel, and nickel strike. The following cleaning treatments may be used for all conditions and types of electrodeposited nickel: degreasing and electrolytic alkaline cleaning. The procedures should be used for etching or activating the nickel surface are the following: anodic treatment in concentrated sulfuric acid; anodic etching in sulfuric acid; anodic etching in watts-type bath; acid-nickel chloride treatment; etching by acid immersion; electropolishing treatment; and cathodic treatment.

ORDER

Price:

$44.00        

Scope

1.1 This practice summarizes well-known, generally practical methods for producing adherent electrodeposits of nickel on nickel.

1.2 Electrodeposits of nickel on nickel are produced, for example, to improve the performance of decorative coatings, to reclaim electroplated parts that are defective, and to resume nickel electroplating after interruptions in processing. Interruptions may be deliberate, for example, to machine the electrodeposit at an intermediate stage in the electrodeposition of thick nickel coatings. The interruptions may be unintentional, for example, resulting from equipment and power failures.

1.3 To ensure good adhesion of nickel to nickel, precautions should be taken to avoid biopolar effects during nickel electroplating. This is of particular importance in return-type automatic plating machines where one rack follows another rack closely. Bipolar effects can be avoided by making the racks cathodic while they are entering or leaving the nickel tank. Separate current control on entry and exit stations is desirable.

1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Keywords

ICS Number Code 77.150.40 (Nickel and chromium products)

To find similar documents by ASTM Volume:

02.05 (Metallic and Inorganic Coatings; Metal Powders and Metal Powder Products)

To find similar documents by classification:

77.150.40 (Nickel and chromium products)

This document comes with our free Notification Service, good for the life of the document.

This document is available in either Paper or PDF format.

Document Number

ASTM-B343-92a(2014)

Revision Level

1992A R14 EDITION

Status

Current

Modification Type

Reapproval

Publication Date

Nov. 15, 2014

Document Type

Practice

Page Count

3 pages

Committee Number

B08.02