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  • Zhang, Q.Shanghai University (author)

Mechanical property and reliability of bimodal nano-silver paste with Ag-coated SiC particles

  • Article/chapterEnglish2019

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  • 2019

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  • LIBRIS-ID:oai:research.chalmers.se:c749e160-eb18-4329-b170-f02f8d740705
  • https://research.chalmers.se/publication/510356URI
  • https://doi.org/10.1108/SSMT-05-2018-0014DOI

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  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • © 2019, Emerald Publishing Limited. Purpose: This study aims to develop a bimodal nano-silver paste with improved mechanical property and reliability. Silicon carbide (SiC) particles coated with Ag were introduced in nano-silver paste to improve bonding strength between SiC and Ag particles and enhance high-temperature stability of bimodal nano-silver paste. The effect of sintering parameters such as sintering temperature, sintering time and the proportion of SiC particles on mechanical property and reliability of sintered bimodal nano-silver structure were investigated. Design/methodology/approach: Sandwich structures consist of dummy chips and copper substrates with nickel and silver coating bonded by nano-silver paste were designed for shear testing. Shear strength testing was conducted to study the influence of SiC particles proportions on the mechanical property of sintered nano-silver joints. The reliability of the bimodal nano-silver paste was evaluated experimentally by means of shear test for samples subjected to thermal aging test at 150°C and humidity and temperature testing at 85°C and 85 per cent RH, respectively. Findings: Shear strength was enhanced obviously with the increase of sintering temperature and sintering time. The maximum shear strength was achieved for nano-silver paste sintered at 260°C for 10 min. There was a negative correlation between the proportion of SiC particles and shear strength. After thermal aging testing and humidity and temperature testing for 240 h, the shear strength decreased a little. High-temperature stability and high-hydrothermal stability were improved by the addition of SiC particles. Originality/value: Submicron-scale SiC particles coated with Ag were used as alternative materials to replace part of nano-silver particles to prepare bimodal nano-silver paste due to its high thermal conductivity and excellent mechanical property.

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Added entries (persons, corporate bodies, meetings, titles ...)

  • Zehri, Abdelhafid,1989Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)hafid (author)
  • Liu, JiawenShanghai University (author)
  • Ke, WeiShanghai University (author)
  • Huang, S.Shanghai University (author)
  • Gutierrez Latorre, Martí,1993Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)gmart (author)
  • Wang, Nan,1988Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)nwang (author)
  • Lu, XiuzhenShanghai University (author)
  • Zhou, ChengAerospace Science and Technology Corporation (author)
  • Xia, WeijuanAerospace Science and Technology Corporation (author)
  • Wu, YanpeiAerospace Science and Technology Corporation (author)
  • Ye, L.SHT Smart High-Tech AB (author)
  • Liu, Johan,1960Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)jliu (author)
  • Shanghai UniversityChalmers tekniska högskola (creator_code:org_t)

Related titles

  • In:Soldering and Surface Mount Technology31:4, s. 193-2021758-68360954-0911

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