carbon dioxide blasting
TRANSCRIPT
comprising iron, phosphorus, and zinc sources in amounts required for electrode- positing a zinc-iron-phosphorus alloy film having an iron content of 0.1 to 30% by weight, a phosphorus content of 0.001 to 1.5%, and a balance of zinc, and an auxil- iary agent for depositing phosphorus se- lected from the group consisting of alkyle- nepolyamines having 4 to 12 carbon atoms; reaction products of alkyleneamines having 4 to 12 carbon atoms with alkylene oxides having 2 to 3 carbon atoms; reaction prod- ucts of alkyleneamines each having 4 to 12 carbon atoms with epihalohydrins; alkano- lamines having 2 to 6 carbon atoms; ami- nopolycarboxylic acids having 6 to 14 car- bon atoms and salts thereof: and oxycarboxylic acids having 2 to 8 carbon atoms and salts thereof.
Copper Brightening Process U.S. Patent 5,630,950. May 20, 1997 A.R. CangelosL assignor to Enthone-OMI Inc., Warren, Mich.
An aqueous copper brightening bath comprising an acid and a peroxide in effec-
tive amounts in water to provide brighten- ing of a copper containing substrate: and a bath-soluble, peroxide-stable constituent effective for formation of a dissolution in- hibiting film upon brightening of the sub- strate thereby providing for substantially selfattenuating of the dissolution of the substrate after brightening of the substrate.
Paint Masking Assembly U.S. Patent 5,631,055. May 20, 1997 D.M. Vines et al., assignors to 3M Co., St. Paul Minn.
An assembly, for masking a first portion of a surface, which first portion of the surface has an inegular periphery, so that when masked, the first portion will remain unpainted while a second adjacent portion of the surface is l)ainted.
Bismuth Coating Protection for Copper U.S. Patent 5,631,091. May 20, 1997 A.M. Piano, assignor to Fry's Metals Inc., Providence, RI
A composition effective for immersion plating a coating of bismuth metal onto a copper containing surface comprising an acid-solubilized bismuth salt and an iodide.
Carbon Dioxide Blasting U.S. Patent 5,632,150. May27, 1997 G.W. Henzler, assignor to Liquid Carbonic Corp., Oak Brook, III.
A carbon dioxide pellet blast and carrier gas system.
Rotary Powder Applicator U.S. Patent 5,632,448. May 27, 1997 K.L. Alexander et aL, assignors to Ransburg Corp., Indianapolis
An apparatus for dispensing pulverulent coating material entrained in a stream of a bearing gas, the apparatus comprising a dispenser, a motor for rotating the dis- penser, the motor having an output shaft, the dispenser being mounted on the output shaft to be rotated thereby, the dispenser having a somewhat bell-shaped interior.
PLATING Servicing the Microelectronics,
Wireless/Microwave, Laser, Medical Industries; Defense/Commercial; Jobshop
Nickel: * Electrolytic Sulfamate QQ-N-290 * Electroless Phosphorous 8% Mi1-C-26074
Gold: * Type II Grade C & D Mi1-C-45204 * Type III Grade A Mi1-C-45204
Silver: * Electrolytic QQ-S-365c
Selective Plating; Rack and Barrel Plating; Custom
Plating, 950 Degree C Sintering, Turbowash, Brazing
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110 METAL F INISHING • F E B R U A R Y 1998