A comparison between complete and incomplete cellular precipitations. (15th March 2018)

• Record Type: Journal Article
• Authors: Tu, K.N.; Gusak, A.M.
• Is Part Of: Scripta materialia. Number 146(2018)
• Page Start: 133
• Page End: 135
• Publication Date: 2018-03-15
• Subjects: Cellular precipitation -- Lamellar structure -- Moving cell boundary -- Porous Cu3Sn; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2017.11.036
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Classical cellular precipitation is an incomplete reaction, meaning not all the supersaturated solutes can be precipitated out. Consequently, the kinetic parameters such as lamellar spacing and growth velocity cannot be defined. Recently, in 3-Dimension Integrated Circuits (3D IC) microbump technology, the porous Cu3 Sn formation is a complete cellular precipitation; the kinetic parameters can be defined. This is rare and unique in phase transformations. In this letter, kinetic models of both precipitations are analyzed for a deeper understanding. Graphical abstract: Schematic diagram of cellular precipitation of porous Cu3 Sn from Cu6 Sn5 . Image 1