Etching solution for tin-nickel alloy and process for etching th

Details Etching solution for tin-nickel alloy and process for etching th Etching solution for tin-nickel alloy and process for etching th

1980-02-01

1981-08-11

Massie, Jerome W.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

75119, 156656, 156664, 252 791, 252 792, 252 794, C09K 1306, C23F 100

Patent

active

042832489

ABSTRACT:
An etching solution containing 0.1 mol/l or more phosphoric acid, 0.05 mol/l or more pyrophosphoric acid, 0.1 mol/l or more phosphorous acid, 0.1 mol/l or more of a mixture of phosphoric, pyrophosphoric and/or phosphorous acids, molten phosphoric acid, molten pyrophosphoric acid, molten phosphorous acid or a molten mixture of phosphoric, pyrophosphoric and/or phosphorous acids, for use in etching a tin-nickel alloy; and a process for etching the tin-nickel alloy with the etching solution.

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"Phosphoric Acids and Phosphates", Kirk-Othmer Encyclopedia of Chemical Technology, vol. 15., John Wiley & Sons, Inc., (1968), pp. 234, 241, 316.
Weast, ed., Handbook of Chemistry and Physics, The Chemical Rubber Co., Cleve., Ohio (1967), p. B-175.

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