Alumina/NiCu Laminate under Thermal Shock up to 1000°C: I, Experimental

Research output: Contribution to journalArticlepeer-review

Abstract

The mechanical behavior of an alumina/NiCu laminate under thermal shock loading was investigated. The maximum thermal shock temperature was 1000°C. The laminate architecture was the cause of a basic change in the cracking mechanisms, manifested in a dramatic increase in the mechanical residual strength over that of monolithic alumina. The laminated system was constructed by alternating alumina layers coated with copper films with nickel interlayers and joining them by a combination of liquid-state (brazing) and solid-state (diffusion) bonding. The material system was tested by water quenching square-shaped laminated specimens initially at temperatures of up to 1000°C. Three-point bending tests revealed the mechanical strength before and after thermal shock, and SEM analysis described the damage mechanisms and the extent of debonding at the alumina/NiCu interfaces.

Original languageEnglish
Pages (from-to)2819-2826
Number of pages8
JournalJournal of the American Ceramic Society
Volume84
Issue number3-12
DOIs
StatePublished - Dec 2001
Externally publishedYes

Fingerprint

Dive into the research topics of 'Alumina/NiCu Laminate under Thermal Shock up to 1000°C: I, Experimental'. Together they form a unique fingerprint.

Cite this