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/m 2 )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- 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. MATERIAL HANDLING EQUIPMENT Carts, Baskets, Trays, Metal Fabricating and Welding, Light Machine Work, Castings, PVC Coating and Sandblasting. Let us be part of your team 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 POLLUTION CONTROL Recovery of Metals from Drag Out Destruction of Cyanide Conservation of Water NO Chemicals Added NO Sludge Generated BEWT SYSTEMS INC. PO Box 6932 St. Louis. MO 63006 PHONE: (636) 527-1022 FAX: (636) 527-8606 Circle 012 on reader Infonnatlon card 97

Magnetron sputtering system

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ZINC PIIOSPIIAft CONVIRS.ONCOATINGU.S. Patent 5,868,874. Feb. 9, 1999C.E. Rossio, assignor to PPGIndustries Inc., PittsburghA process for forming a zinc phosphate coating having a coatingweight of at least 150 mg/ft2

(1,612 mg/m2 )on an aluminumsubstrate comprising contactingwith a zinc phosphate conversioncoating bath, which contains 0.4to 2.5 gIL zinc; 5 to 26 gIL phosphate; 0.4 to 1.5 gIL of fluoride; 4to 400 mgIL ferrous ion; and 0.01to 2 gIL ammonium ion, whereinfluoride ion is provided from ammonium bifluoride, which alsoacts as a source of ammoniumions, and wherein the zinc phosphate coating is formed on the

aluminum substrate optionally inthe presence of an accelerator.

MAGNDIION SPUnmlING SVSTIMU.S. Patent 5,868,914. Feb. 9, 1999J.F.M. Landsbergen and J. Visser,assignors to ODME InternationalB. V., Veldhouen, NetherlandsA magnetron sputtering systemcomprising a chamber with a flatcathode plate; an anode centrallypositioned on the flat cathodeplate; an annular auxiliary electrode; a device for receiving a flatsubstrate to be coated with cathode plate material at a positionopposite and parallel to the cathode plate and present outside thechamber; and a magnetic devicefor generating an electron trap

over part of an intermediate areaof the sputtering surface of thecathode plate; whereby the magnetic device generates an asymmetric magnetic field.

IUCTIIODIPOSITION 01' ACHIIOMIUM COATING CONTAININGMUD INCLUSIONSU.S. Patent 5,868,917. Feb. 9, 1999P. Benaben, assignor to FloquetMonopole, Poissy, France

A process for providing a substrate with a protective coatingcomprising a chromium matrix inwhich solid particles are distributed, said process comprisingelectrodepositing from an aqueous solution comprising trivalentchromium obtained from a reduc-

DESIGN, MANUFACTURE & REPAIRPlating Equipment, Plating Racks, PaintRacks, PCB Racks, Anodizing Racks, TeflonTipped Thumb Screws, Anode Baskets,Anode Bags, Stainless Steel Baskets, Blackoxide Baskets, Lead and Carbon Anodes,Plating and Masking Tapes, Tanks, TankLiners, Barrels and Waste Water Treatment.

MATERIAL HANDLING EQUIPMENTCarts, Baskets, Trays, Metal Fabricating andWelding, Light Machine Work, Castings,PVC Coating and Sandblasting.

Let us be partofyourteamto a winningfinish.

5730 Paloma AvenueLos Angeles, Califomia 90011

Tel: (323) 234-0604Fax: (323) 234-2675

Circle 088 on reader Information card

November 1999

POLLUTION CONTROL

Recovery of Metals from Drag Out

Destruction of Cyanide

Conservation of Water

NO Chemicals Added

NO Sludge Generated