Agglomeration behavior of solid nickel on polycrystalline barium titanate

Journal Article · Thu Nov 01 00:00:00 EDT 2007 · Materials Letters

DOI:https://doi.org/10.1016/j.matlet.2007.03.088· OSTI ID:920968

Weil, K Scott; Mast, Eric S; Sprenkle, Vince

This letter describes the phenomenon that takes place between nickel/barium titanate couples when heated under conditions employed in multilayer ceramic capacitor manufacturing practice: a 4hr, 1300°C isothermal anneal in 1% H₂ – 99% N₂. Dense, sputtered nickel films were observed to dewet the titanate and agglomerate into discrete or interconnected islands via a solid-state process. Up to a critical film thickness value of ~1.4 μm, the degree of agglomeration was found to display an exponential dependence on the thickness of the original nickel film.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 920968
• Report Number(s): PNNL-SA-57240; AA1510100; TRN: US200805%%173
• Journal Information: Materials Letters, Vol. 61, Issue 28; ISSN 0167-577X
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
NICKEL
AGGLOMERATION
BARIUM OXIDES
TITANIUM OXIDES
CAPACITORS
CERAMICS
MANUFACTURING
barium titanate
multi-layer capacitor
nickel agglomeration