摘要:
Polyacrylic acids are used in electrowinning and electrorefining baths as additives for grain refinement, dendrite reduction, and for reducing impurities in the electroplate.
摘要:
An aqueous bath suitable for electrodepositing zinc and alloys of zinc including zinc-nickel, zinc-cobalt, zinc-nickel-cobalt, zinc-iron, zinc-iron-nickel, and zinc-iron-cobalt containing a brightening amount of an AB-type polyamide brightener in an amount effective to produce an electrodeposit of the desired brightness. The invention further contemplates the process of electrodepositing zinc and zinc alloys of the foregoing types on a conductive substrate employing the aqueous electrolyte.
摘要:
A process and bath for electropolishing and brightening aluminum and aluminum alloys. The bath preferably contains from about 30 percent to about 95 percent phosphoric acid and from about five percent to about 70 percent of a poly (alkylene ether). A minor amount, generally from about 0.05 to about two percent, of a wetting agent may be added to the bath if desired. The bath forms a protective foamy film over the part being electroplated, thereby protecting the part against chemical attack by the bath. Further, the polyether additives are chemically and thermally stable in the electrolyte under normal bath operating conditions. The bath may be operated at low voltages ranging from about 15 to 100 volts.
摘要:
An aqueous acidic electrolyte of the chloride, sulfate and mixed chloride-sulfate types suitable for electrodepositing a zinc-nickel alloy on a conductive substrate comprising an aqueous solution containing zinc ions and nickel ions, and an additive agent of a class selected from the group consisting of (a) aromatic sulfonic acids, (b) aromatic sulfonamides, sulfonimides and mixed carboxamides/sulfonamides, (c) acetylene alcohols as well as the bath soluble and compatible salts and mixtures thereof. The invention further encompasses the process for electrodepositing a zinc-nickel alloy employing the aforementioned electrolyte.
摘要:
A zinc plating bath comprises a conductive aqueous solution containing zinc ions and a brightening additive which is a derivative of .beta.-aminopropionic acid or a polymer thereof. A ductile zinc deposit having a uniform high degree of brightness can be electrodeposited from the bath onto a substrate.
摘要:
This invention is a system and method for local and/or remote installing, uninstalling, or upgrading components of a data storage management system, and may include an ability to control the installation from a central location in accordance with rules and protocol for order and number of components.
摘要:
A copper electroplating process using alkoxylated dimercaptan ethers as an additive. The additives prevent dendritic formations which short out electrodes. Also provided is a method for polarizing the electrodes, allowing for current reduction and cost savings.
摘要:
An aqueous bath suitable for electrodepositing zinc and alloys of zinc including zinc-nickel, zinc-cobalt, zinc-nickel-cobalt, zinc-iron, zinc-iron-nickel, zinc-iron-cobalt, and zinc-nickel-cobalt-iron containing a brightening amount of an AABB-type polyamide brightener in an amount effective to produce an electrodeposit of the desired brightness. The invention further contemplates the process of electrodepositing zinc and zinc alloys of the foregoing types on a conductive substrate employing the aqueous electrolyte.
摘要:
A zinc/iron alloy electroplating bath comprising a conductive aqueous solution containing zinc ions, iron ions, and a brightening additive which is a derivative of B-aminopropionic acid or a polymer thereof. A semi-bright to bright zinc/iron alloy deposit can be electrodeposited from the bath onto a substrate.
摘要:
An acid zinc alloy electroplating bath such as a zinc-nickel and/or cobalt bath and process employing said bath which contains an effective amount of a brightening agent selected from a bath soluble polyacrylamide polymer, N-substituted polyacrylamide derivative, and copolymers thereof. The zinc alloy electroplating is economical and versatile in use and produces a ductile, corrosion resistant plating deposit having a semi-bright to bright appearance.