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Zinc phosphate conversion coating
ZINC PIIOSPIIAft CONVIRS.ON COATING
U.S. Patent 5,868,874. Feb. 9, 1999 C.E. Rossio, assignor to PPG Industries Inc., Pittsburgh
A process for forming a zinc phosphate coating having a coating weight of at least 150 mg/ft 2 (1,612 mg/m2 )on an aluminum substrate comprising contacting with a zinc phosphate conversion coating bath, which contains 0.4 to 2.5 gIL zinc; 5 to 26 gIL phosphate; 0.4 to 1.5 gIL of fluoride; 4 to 400 mgIL ferrous ion; and 0.01 to 2 gIL ammonium ion, wherein fluoride ion is provided from ammonium bifluoride, which also acts as a source of ammonium ions, and wherein the zinc phosphate coating is formed on the
aluminum substrate optionally in the presence of an accelerator. MAGNDIION SPUnmlING SVSTIM
U.S. Patent 5,868,914. Feb. 9, 1999 J.F.M. Landsbergen and J. Visser, assignors to ODME International B. V., Veldhouen, Netherlands
A magnetron sputtering system comprising a chamber with a flat cathode plate; an anode centrally positioned on the flat cathode plate; an annular auxiliary electrode; a device for receiving a flat substrate to be coated with cathode plate material at a position opposite and parallel to the cathode plate and present outside the chamber; and a magnetic device for generating an electron trap
over part of an intermediate area of the sputtering surface of the cathode plate; whereby the magnetic device generates an asymmetric magnetic field. IUCTIIODIPOSITION 01' A CHIIOMIUM COATING CONTAINING MUD INCLUSIONS
U.S. Patent 5,868,917. Feb. 9, 1999 P. Benaben, assignor to Floquet Monopole, Poissy, France
A process for providing a substrate with a protective coating comprising a chromium matrix in which solid particles are distributed, said process comprising electrodepositing from an aqueous solution comprising trivalent chromium obtained from a reduc-
POLLUTION CONTROL DESIGN, MANUFACTURE & REPAIR
Plating Equipment, Plating Racks, Paint Racks, PCB Racks, Anodizing Racks, Teflon Tipped Thumb Screws, Anode Baskets, Anode Bags, Stainless Steel Baskets, Black oxide Baskets, Lead and Carbon Anodes, Plating and Masking Tapes, Tanks, Tank Liners, Barrels and Waste Water Treatment.
Recovery of Metals from Drag Out Destruction of Cyanide Conservation of Water NO Chemicals Added
MATERIAL HANDLING EQUIPMENT
NO Sludge Generated
Let us be part ofyour team
BEWT SYSTEMS INC.
Carts, Baskets, Trays, Metal Fabricating and Welding, Light Machine Work, Castings, PVC Coating and Sandblasting. to a winningfinish. 5730 Paloma Avenue
Los Angeles, Califomia 90011
Tel: (323) 234-0604 Fax: (323) 234-2675
Circle 088 on reader Information card November 1999
PO Box 6932 St. Louis. MO 63006
PHONE: (636) 527-1022 FAX: (636) 527-8606 Circle 012 on reader Infonnatlon card
97
U.S. Patent 5,868,874. Feb. 9, 1999 C.E. Rossio, assignor to PPG Industries Inc., Pittsburgh
A process for forming a zinc phosphate coating having a coating weight of at least 150 mg/ft 2 (1,612 mg/m2 )on an aluminum substrate comprising contacting with a zinc phosphate conversion coating bath, which contains 0.4 to 2.5 gIL zinc; 5 to 26 gIL phosphate; 0.4 to 1.5 gIL of fluoride; 4 to 400 mgIL ferrous ion; and 0.01 to 2 gIL ammonium ion, wherein fluoride ion is provided from ammonium bifluoride, which also acts as a source of ammonium ions, and wherein the zinc phosphate coating is formed on the
aluminum substrate optionally in the presence of an accelerator. MAGNDIION SPUnmlING SVSTIM
U.S. Patent 5,868,914. Feb. 9, 1999 J.F.M. Landsbergen and J. Visser, assignors to ODME International B. V., Veldhouen, Netherlands
A magnetron sputtering system comprising a chamber with a flat cathode plate; an anode centrally positioned on the flat cathode plate; an annular auxiliary electrode; a device for receiving a flat substrate to be coated with cathode plate material at a position opposite and parallel to the cathode plate and present outside the chamber; and a magnetic device for generating an electron trap
over part of an intermediate area of the sputtering surface of the cathode plate; whereby the magnetic device generates an asymmetric magnetic field. IUCTIIODIPOSITION 01' A CHIIOMIUM COATING CONTAINING MUD INCLUSIONS
U.S. Patent 5,868,917. Feb. 9, 1999 P. Benaben, assignor to Floquet Monopole, Poissy, France
A process for providing a substrate with a protective coating comprising a chromium matrix in which solid particles are distributed, said process comprising electrodepositing from an aqueous solution comprising trivalent chromium obtained from a reduc-
POLLUTION CONTROL DESIGN, MANUFACTURE & REPAIR
Plating Equipment, Plating Racks, Paint Racks, PCB Racks, Anodizing Racks, Teflon Tipped Thumb Screws, Anode Baskets, Anode Bags, Stainless Steel Baskets, Black oxide Baskets, Lead and Carbon Anodes, Plating and Masking Tapes, Tanks, Tank Liners, Barrels and Waste Water Treatment.
Recovery of Metals from Drag Out Destruction of Cyanide Conservation of Water NO Chemicals Added
MATERIAL HANDLING EQUIPMENT
NO Sludge Generated
Let us be part ofyour team
BEWT SYSTEMS INC.
Carts, Baskets, Trays, Metal Fabricating and Welding, Light Machine Work, Castings, PVC Coating and Sandblasting. to a winningfinish. 5730 Paloma Avenue
Los Angeles, Califomia 90011
Tel: (323) 234-0604 Fax: (323) 234-2675
Circle 088 on reader Information card November 1999
PO Box 6932 St. Louis. MO 63006
PHONE: (636) 527-1022 FAX: (636) 527-8606 Circle 012 on reader Infonnatlon card
97