- Email: [email protected]
Electroless tin and tin-lead bath
produce an increasing voltage differential up to about 180 V to result in a substantially continuous first layer at the surface of the article, which layer comprises a fluoride, an oxide, an oxofluoride or a mixture thereof, to form a pretreated article; placing the pretreated article into a second aqueous electrolytic solution having a pH of at least 11 and containing 2-15 g/L of an aqueous soluble hydroxide, 2-14 g/L of an aqueous soluble fluoride source, and 5-40 g/L of an alkali metal silicate; establishing a current density of about 5-100 mA/cm* to create a voltage differential of at least 150 V in the electrolytic solution under conditions producing a spark discharge; wherein a silicon oxide-containing coating is formed on the article.
Metallization Process U.S.Pafent 5,264,107.Nov.23, 1993
Bell R.S.Bentsonet al., assignors to AT&T Laboratories, Murray Hi//, NJ.
Cl XPertfor Windowsm with Interface Designerallowsyou to choosefroma menuofuserintekcesorcseateyourown!
A pseudo-electroless, followed by electroless metallization of nickel on metallic wires, as for semiconductor chip-to-chip interconnections.
Cl Pointandshootpositioning withvisual cascade givesyouinstantmeasuxment area scaling forrapidsample placement.
Nickel Plating Bath Additive
U.S. Patent 6264,112.Nov.23, 1993 W Dahms,assignor to Afotech Deutschland G&H, Berlin
CI lklusive placeand shootmodewith multi-planaroptical systemprovides measurements in recessedareasor in any locationonbigparts! I-
-B
Acidic nickel baths containing sulfoethyl)-pyridiniumbetaine.
Electroless Tin and Tin-Lead Bath
UPATechnology
We Make The Process More Productive sm Terminal Drive,Plainview, NewYork11803 ForImmediateInformationCall l-800-645-7566 or 516-349-8300 Circle 074
on
reader information card
Evaporator Boat U.S.Patent 5,261,964. Nov. j6, 1993
H. Grimm, assignorto @&o/d AG, Hanau, Germany
An evaporator boat for evaporating material in an apparatus for coating a substrate in a vacuum coating chamber.
Acid Recycling System U.S.Patenf5,264,123. Nov. 23, 1993 DE. Bailey,Palmer,Mass. A system for removing acid from a metal-rich acid stream by diffusion dialysis, in which the acid stream is contacted with a water stream through an ion exchange membrane, in a series, countercurrent flow contactor; the contactor is formed of a stack of layers of ion exchange membrane and impervious separators with
86
l-(2-
flow-control apertures; and the stack includes switch-back spacers, which cause the flow :o switch direction, without external plumbing.
Two-Step Anodic Coating for Magnesium Alloys U.S.Patenf5,264,113.Nov.23, 1993 DE. Bartaket a/., assignorslo TechnologyAppkca-
U.S. Patent 5,266,103.Nov.36, 1993 H. Uchidaet al., assignorsto C. Uyemurad Co. Ltd., Osaka
A tin or tin-lead alloy electroless plating bath comprising a soluble metal salt component selected from the group consisting of a stannous salt and a mixture of a stannous salt and a lead salt, an acid, thiourea or a thiourea derivative, a hypophosphorous acid or a hypophosphite, a nonionic surfactant, and a member selected from the group consisting of a cationic surfactant, a heterocyclic compound having a nitrogen atom in the ring and a derivative thereof, and a mixture thereof.
Vacuum Coating Apparatus
tions Grow Inc., Grand Forks, N.D.
U.S.Pafent5,266,117.Nov.36, 1993 S. Beisswengeret al., assignorsto LeyboldAG,
A process for forming an improved corrosion-resistant coating on a magnesium-containing article, which comprises placing the article into a first, silicate-free, aqueous electrolytic solution having a pH of at least 11 and containing 3-10 g/L_of an aqueous soluble hydroxide, and S-30 g/L of an aqueous soluble fluoride; establishing a current density of lO-200 mA/cm*, to
An apparatus for coating a substrate with evaporated material, comprising a vacuum chamber having means therein for transferring a substrate from a loading station to a coating station, an evaporation nozzle located above the coating station, and wire supply means for continuously supplying the material in wire form for evaporation.
Hanau, Germany
METAL FINISHING
??
JANUARY
1995
Metallization Process U.S.Pafent 5,264,107.Nov.23, 1993
Bell R.S.Bentsonet al., assignors to AT&T Laboratories, Murray Hi//, NJ.
Cl XPertfor Windowsm with Interface Designerallowsyou to choosefroma menuofuserintekcesorcseateyourown!
A pseudo-electroless, followed by electroless metallization of nickel on metallic wires, as for semiconductor chip-to-chip interconnections.
Cl Pointandshootpositioning withvisual cascade givesyouinstantmeasuxment area scaling forrapidsample placement.
Nickel Plating Bath Additive
U.S. Patent 6264,112.Nov.23, 1993 W Dahms,assignor to Afotech Deutschland G&H, Berlin
CI lklusive placeand shootmodewith multi-planaroptical systemprovides measurements in recessedareasor in any locationonbigparts! I-
-B
Acidic nickel baths containing sulfoethyl)-pyridiniumbetaine.
Electroless Tin and Tin-Lead Bath
UPATechnology
We Make The Process More Productive sm Terminal Drive,Plainview, NewYork11803 ForImmediateInformationCall l-800-645-7566 or 516-349-8300 Circle 074
on
reader information card
Evaporator Boat U.S.Patent 5,261,964. Nov. j6, 1993
H. Grimm, assignorto @&o/d AG, Hanau, Germany
An evaporator boat for evaporating material in an apparatus for coating a substrate in a vacuum coating chamber.
Acid Recycling System U.S.Patenf5,264,123. Nov. 23, 1993 DE. Bailey,Palmer,Mass. A system for removing acid from a metal-rich acid stream by diffusion dialysis, in which the acid stream is contacted with a water stream through an ion exchange membrane, in a series, countercurrent flow contactor; the contactor is formed of a stack of layers of ion exchange membrane and impervious separators with
86
l-(2-
flow-control apertures; and the stack includes switch-back spacers, which cause the flow :o switch direction, without external plumbing.
Two-Step Anodic Coating for Magnesium Alloys U.S.Patenf5,264,113.Nov.23, 1993 DE. Bartaket a/., assignorslo TechnologyAppkca-
U.S. Patent 5,266,103.Nov.36, 1993 H. Uchidaet al., assignorsto C. Uyemurad Co. Ltd., Osaka
A tin or tin-lead alloy electroless plating bath comprising a soluble metal salt component selected from the group consisting of a stannous salt and a mixture of a stannous salt and a lead salt, an acid, thiourea or a thiourea derivative, a hypophosphorous acid or a hypophosphite, a nonionic surfactant, and a member selected from the group consisting of a cationic surfactant, a heterocyclic compound having a nitrogen atom in the ring and a derivative thereof, and a mixture thereof.
Vacuum Coating Apparatus
tions Grow Inc., Grand Forks, N.D.
U.S.Pafent5,266,117.Nov.36, 1993 S. Beisswengeret al., assignorsto LeyboldAG,
A process for forming an improved corrosion-resistant coating on a magnesium-containing article, which comprises placing the article into a first, silicate-free, aqueous electrolytic solution having a pH of at least 11 and containing 3-10 g/L_of an aqueous soluble hydroxide, and S-30 g/L of an aqueous soluble fluoride; establishing a current density of lO-200 mA/cm*, to
An apparatus for coating a substrate with evaporated material, comprising a vacuum chamber having means therein for transferring a substrate from a loading station to a coating station, an evaporation nozzle located above the coating station, and wire supply means for continuously supplying the material in wire form for evaporation.
Hanau, Germany
METAL FINISHING
??
JANUARY
1995