US2013153430A1PendingUtilityA1

Electrodeposition baths, systems and methods

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Assignee: LUND ALAN CPriority: Nov 7, 2008Filed: Sep 14, 2012Published: Jun 20, 2013
Est. expiryNov 7, 2028(~2.3 yrs left)· nominal 20-yr term from priority
Inventors:Alan C. LundNazila DadvandJohn CahalenDaniel J. Montville
C25D 21/12G01N 31/22C25D 3/56C25D 3/562Y10T436/203332Y10T436/216
63
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Claims

Abstract

Electrodeposition baths, systems and methods are provided. In some embodiments, the baths, systems and methods are used to deposit metal alloy coatings.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 - 20 . (canceled) 
     
     
         21 . An electrodeposition method comprising:
 removing a sample from an electrodeposition bath comprising a tungsten and/or molybdenum ionic species, an ionic species of a second metal, and a brightening agent comprising a betaine compound, the betaine compound comprises a positively charged cationic functional group and a negatively charged anionic functional group;   analyzing the sample; and   electrodepositing a coating on an article in the electroplating bath, wherein the coating comprises tungsten and/or molybdenum, and the second metal.   
     
     
         22 . The method of  claim 21 , wherein the second metal is nickel. 
     
     
         23 . The method of  claim 21 , wherein the anionic functional group comprises a sulfate group. 
     
     
         24 . The method of  claim 21 , wherein the anionic functional group comprises a sulfonic group. 
     
     
         25 . The method of  claim 21 , wherein the anionic functional group comprises a carboxylic group. 
     
     
         26 . The method of  claim 21 , wherein the cationic functional group comprises an ammonium group. 
     
     
         27 . The method of  claim 21 , wherein the cationic functional group comprises a phosphonium group. 
     
     
         28 . The method of  claim 21 , wherein the cationic functional group comprises a pyridinium group. 
     
     
         29 . The method of  claim 21 , wherein analyzing the sample comprises determining the concentration of the brightening agent. 
     
     
         30 . The method of  claim 21 ,wherein the bath comprises a wetting agent. 
     
     
         31 . The method of  claim 30 , wherein the analyzing the sample comprises determining the concentration of the wetting agent. 
     
     
         32 . The method of  claim 31 , wherein the wetting agent is sulfopropylated polyalkoxy napthol compound. 
     
     
         33 . The method of  claim 21 , wherein the coating comprises a tungsten alloy. 
     
     
         34 . The method of  claim 33 , wherein the coating comprises a nickel-tungsten alloy. 
     
     
         35 . The method of  claim 21 , wherein the coating is electrodeposited using DC plating. 
     
     
         36 . The method of  claim 21 , wherein the coating is electrodeposited using reverse pulse plating.

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