Electrodeposition of amorphous Ni-Cr-P alloys

Conference · Thu Dec 31 23:00:00 EST 1987

OSTI ID:5134552

Guilinger, T R; Voytko, J E

We developed a plating bath to deposit adherent, pore-free, amorphous Ni-Cr-P alloys which exhibit excellent corrosion resistance. The bath consists of the chlorides of chromium and nickel with hypophosphite ion or a mixture of phosphorous and phosphoric acids as the phosphorus source. We used citrate ion as complexing agent to shift the Ni deposition potential to more cathodic values so that Ni and Cr codeposition could occur. Potentiodynamic corrosion testing of amorphous deposits with at least 10 at% Cr showed corrosion resistance in pitting acid chloride environments superior to such engineering alloys as 304 stainless steel and Hastelloy C-276. 12 refs., 2 tabs.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5134552
• Report Number(s): SAND-87-2573C; CONF-880684-1; ON: DE88006868
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
ALLOYS
AMORPHOUS STATE
CARBOXYLIC ACID SALTS
CHLORIDES
CHLORINE COMPOUNDS
CHROMIUM ALLOYS
CHROMIUM CHLORIDES
CHROMIUM COMPOUNDS
CITRATES
CORROSION RESISTANCE
DEPOSITION
DISPERSIONS
ELECTRODEPOSITION
ELECTROLYSIS
HALIDES
HALOGEN COMPOUNDS
LYSIS
MIXTURES
NICKEL ALLOYS
NICKEL BASE ALLOYS
NICKEL CHLORIDES
NICKEL COMPOUNDS
PHOSPHORUS ADDITIONS
PROCESS SOLUTIONS
SOLUTIONS
SURFACE COATING
TRANSITION ELEMENT COMPOUNDS