Development of a ceramic powder for use in multilayer capacitors with nickel electrodes

Conference · Wed Dec 31 04:00:00 EST 1997

OSTI ID:567924

Chu, M; Bultitude, J; Rae, A ^[1]; Thompson, I ^[2]

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1. TAM Ceramics, Inc., Niagara Falls, NY (United States)
2. Cookson Technology Center, Oxford (United Kingdom)

The high price of Pd has spurred an increase in activity in base metal usage in MLC capacitors. These have distinct advantages in high layer count, high value parts where high Pd internal electrode systems become uneconomic. Base metal (Nickel) compatible dielectric compositions have been in use for some years. Nickel has achieved predominance of late with the development of X7R materials and the opportunity for high layer count Ni base metal MLCCs to compete with Tantalum capacitors. Concerns about Nickel base metal systems have included MLCC reliability, the sheer difficulty of producing reliable parts, and the high capital costs of base metal furnaces using reducing atmospheres. The systems approach used by TAM and TAM`s partners encompasses equipment, gas atmosphere, binder and electrode as well as ceramic dielectric, as the interactions during the firing cycle, although complex, are easily controlled if the system is considered as a whole. This paper describes the combination of a number of novel technologies which will allow an increase in reliability, ease of processing and a novel approach to firing which will dramatically reduce production costs for X7R MLCCs.

• OSTI ID: 567924
• Report Number(s): CONF-9604124--
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CAPACITORS
CERAMICS
COMMERCIALIZATION
DIELECTRIC PROPERTIES
ELECTRODES
MANUFACTURING
NICKEL
PROCESSING
RELIABILITY
SINTERING