Abstract: Method for plating an electroless nickel phosphorus containing alloy deposit on a substrate where the deposit has a high weight percent of phosphorus above 8 or 10 weigh percent and is plated at high deposition rates above 10 and up to 25 micrometers per hour and where the plating deposition is conducted in the presence of a nickel chelating agent having a stability constant, log K.sub.a, above 3 such as citric acid and at a pH of from about 5.0 to about 8.0.

Abstract: Method for producing electroless nickel or cobalt polymetallic polyalloys having high hardness as plated and containing phosphorus, a primary metal selected from the group consisting of nickel and cobalt and at least one secondary metal selected from the group consisting of copper, molybdenum, tin, and tungsten, which alloys are prepared in baths employing a hypophosphite reducing agent and operated at a particular alkaline pH range and in the presence of a fluoborate anion. The polyalloys "as-deposited" do not require age or heat treatments to produce hardness having Vickers Harness Number values above about 800 (VHN.sub.100).

Abstract: Electroless nickel baths for producing high hardness nickel alloys "as-deposited" containing phosphorus which are produced using baths employing hypophosphite reducing agents at a particular pH range advantageously above 6 and in the presence of a fluoborate anion. The nickel phosphorus alloys "as-deposited" do not require age or heat treatments to produce high hardness with Vickers Harness Number values above about 700 and generally above about 800 to 900 (VHN.sub.100) and have phosphorus contents below about 4 weight percent and a crystalline nature with crystallite diameters in excess of 60 Angstroms.

Abstract: Polyalloy catalytic coating formulations are used for preparing a metallic substrate surface to enhance subsequent plating thereover of nickel, cobalt or polyalloys including nickel or cobalt. At the same time, these catalytic formulations can be rinsed subsequent to their application onto the substrate and prior to the electroless deposition thereover. Improved products such as printed wiring boards may be made with these catalytic formulations. Such boards are prepared by depositing metal and forming circuitry patterns by using resists, etching techniques and the like which typically leave copper specks on the non-conductive board.

Abstract: Electroless, polymetallic nickel alloys containing an element of boron or phosphorus and one or more metals selected from tin, tungsten, molybdenum or copper which have unique properties and are produced as a plated deposit in an electroless nickel plating bath containing an ester complex of a polyhydric acid or alcohol such as the diboron ester of glucoheptonic acid.

Abstract: Polyalloy catalytic coating formulations are used for preparing a metallic substrate surface to enhance subsequent plating thereover of nickel, cobalt or polyalloys including nickel or cobalt. At the same time, these catalytic formulations can be rinsed subsequent to their application onto the substrate and prior to the electroless deposition thereover. Improved products such as printed wiring boards may be made with these catalytic formulations. Such boards are prepared by depositing metal and forming circuitry patterns by using resists, etching techniques and the like which typically leave copper specks on the non-conductive board.

Abstract: Electroless, polymetallic nickel alloys containing an element of boron or phosphorus and one or more metals selected from tin, tungsten, molybdenum or copper which have unique properties and are produced as a plated deposit in an electroless nickel plating bath containing an ester complex of polyhydric acid or alcohol such as the diboron ester of glucoheptonic acid.

Abstract: Transition metals form a plated deposit in an electroless transition metal plating bath containing an organophosphorus complexing agent selected from the class of compounds having the general formulas: ##STR1## wherein R.sub.1 is alkyl having from 1 to 5 carbon atoms, alkali metal and ammonium salts of said compounds, and ##STR2## wherein R.sub.2 is ##STR3## R.sub.3 is selected from the class consisting of R.sub.2 and --CH.sub.2 CH.sub.2 OH, and R.sub.4 is selected from the group consistiong of R.sub.2, --CH.sub.2 CH.sub.2 OH, and ##STR4## wherein each M is independently selected from the group consisting of H, NH, and alkali metal, and "n" is an integer from 1 to 6 inclusive. These baths have unique properties, including the ability to be formulated to have selected operating pH values within a wide pH range and the ability to operate effectively at the selected pH value.