Behavior of the electroless composite films plated from a Ni-P bath with metallic dispersion of Zr and Nb powders
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), Vol. 136:4
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
NICKEL PHOSPHIDES
POWDER METALLURGY
NIOBIUM PHOSPHIDES
SUPERCONDUCTING COMPOSITES
PHASE STUDIES
ZIRCONIUM PHOSPHIDES
AMORPHOUS STATE
HEAT TREATMENTS
THIN FILMS
COMPOSITE MATERIALS
FILMS
MATERIALS
METALLURGY
NICKEL COMPOUNDS
NIOBIUM COMPOUNDS
PHOSPHIDES
PHOSPHORUS COMPOUNDS
PNICTIDES
REFRACTORY METAL COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
420201* - Engineering- Cryogenic Equipment & Devices
656100 - Condensed Matter Physics- Superconductivity
360602 - Other Materials- Structure & Phase Studies