Roles of palladium particles in enhancing the electrochemical migration resistance of sintered nano-silver paste as a bonding material

Di Wang, Yun Hui Mei, Haining Xie, Kun Zhang, Kim Shyong Siow, Xin Li, Guo Quan Lu

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The inhibition effect and mechanism of adding palladium particles to nano-silver paste on the migration of silver in high temperature is reported. The electrochemical migration (ECM) tests showed that silver migration was significantly delayed by the addition of palladium. The roles of different compositions, e.g., PdO, in enhancing the ECM resistance of silver were studied experimentally. We found Ag-Pd alloy < PdO < PdO (the oxidation process of palladium). The oxidation of palladium to palladium (II) oxides (PdO) suppressed the silver oxides to delay the onset of silver dendrites formation resulting in longer failure lifetime than the pure PdO, Ag-Pd alloy or a simple combination of the two.

Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalMaterials Letters
Volume206
DOIs
Publication statusPublished - 1 Nov 2017

Fingerprint

Adhesive pastes
Palladium
Ointments
Silver
palladium
silver
Silver oxides
silver oxides
Oxidation
oxidation
dendrites
Oxides
life (durability)
oxides
Chemical analysis
Temperature

Keywords

  • Electrochemical migration
  • Electronic packaging
  • Nanoparticles
  • Sintering

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Roles of palladium particles in enhancing the electrochemical migration resistance of sintered nano-silver paste as a bonding material. / Wang, Di; Mei, Yun Hui; Xie, Haining; Zhang, Kun; Siow, Kim Shyong; Li, Xin; Lu, Guo Quan.

In: Materials Letters, Vol. 206, 01.11.2017, p. 1-4.

Research output: Contribution to journalArticle

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AU - Li, Xin

AU - Lu, Guo Quan

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