Behavior of the electroless composite films plated from a Ni-P bath with metallic dispersion of Zr and Nb powders

Journal Article · Sat Apr 01 04:00:00 EST 1989 · J. Electrochem. Soc.; (United States)

DOI:https://doi.org/10.1149/1.2096797· OSTI ID:5760389

Osaka, T; Koiwa, I; Usuda, M; Arai, K; Saito, I

An electroless Ni-Zr-P composite film and a Ni-Nb-P composite film were plated and their heat-treating behaviors were investigated. The addition of 20g dm/sup -3/ of metallic powder resulted in a composite film that contained 21.2 weight percent (w/o) of Zr. (13.8 atom percent (a/o)), or 4.8 w/o of Nb. (2.9 a/o), respectively. Both metallic powders were dispersed uniformly throughout the film. The metallic Ni formed by the crystallization on the Ni-P matrix diffused into the metallic powders, and the amorphous Ni-Zr and Ni-Nb phases were formed by heat-treatment at 500/sup 0/ or 300/sup 0/C. Some parts of the amorphous Ni-Zr phases and the metallic Ni phases combined to form intermetallic compounds by heat-treatment at 600/sup 0/C. The nickel-rich parts of the amorphous Ni-Nb phase were converted into a metastable Ni-Nb phase (zeta phase) or a Ni-Nb solid solution by heat-treatment at 700/sup 0/C. The longer heating time at 400/sup 0/C increased the amount of the Ni-Zr amorphous phase: however, it decreased the reactivity of the amorphous Ni-Zr phase. The same heat-treatment of 400/sup 0/C did not give the considerable change on the amorphous Ni-Nb phase.

• Research Organization: Waseda Univ., Tokyo (Japan). School of Science and Engineering
• OSTI ID: 5760389
• Journal Information: J. Electrochem. Soc.; (United States), Journal Name: J. Electrochem. Soc.; (United States) Vol. 136:4; ISSN JESOA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602 -- Other Materials-- Structure & Phase Studies
420201* -- Engineering-- Cryogenic Equipment & Devices
656100 -- Condensed Matter Physics-- Superconductivity
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMORPHOUS STATE
COMPOSITE MATERIALS
FILMS
HEAT TREATMENTS
MATERIALS
METALLURGY
NICKEL COMPOUNDS
NICKEL PHOSPHIDES
NIOBIUM COMPOUNDS
NIOBIUM PHOSPHIDES
PHASE STUDIES
PHOSPHIDES
PHOSPHORUS COMPOUNDS
PNICTIDES
POWDER METALLURGY
REFRACTORY METAL COMPOUNDS
SUPERCONDUCTING COMPOSITES
THIN FILMS
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
ZIRCONIUM PHOSPHIDES