Characteristics of Die-Attach Method by Sinter Bonding Using Ag-40Cu Mechanically Alloyed Particles

• Autorzy: Choi Woo Lim , Lee Jong-Hyun

Identyfikatory

DOI

10.24425/amm.2019.127568

• Języki publikacji: EN

Abstrakty

EN

Ag and Cu powders were mechanically alloyed using high-energy planetary milling to evaluate the sinter-bonding characteristics of a die-attach paste containing particles of these two representative conductive metals mixed at atomic scale. This resulted in the formation of completely alloyed Ag-40Cu particles of 9.5 μm average size after 3 h. The alloyed particles exhibited antioxidation properties during heating to 225°C in air; the combination of high pressure and long bonding time at 225°C enhanced the shear strength of the chip bonded using the particles. Consequently, the chips sinter-bonded at 225°C and 10 MPa for 10 min exhibited a sufficient strength of 15.3 MPa. However, an increase in bonding temperature to 250°C was detrimental to the strength, due to excessive oxidation of the alloyed particles. The mechanically alloyed phase in the particle began to decompose into nanoscale Ag and Cu phases above a bonding temperature of 225°C during heating.

Słowa kluczowe

EN

mechanical alloying; Ag-Cu; die-attach; sinter bonding; shear strength

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2019
• Tom: Vol. 64, iss. 2
• Strony: 507--512
• Opis fizyczny: Bibliogr. 16 poz., fot., rys.

Twórcy

autor

Choi Woo Lim

• Department of Materials Science and Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea

autor

Lee Jong-Hyun

• Department of Materials Science and Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea

Bibliografia

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Uwagi

EN

1. This work was supported by the Materials & Components Technology Development Program (10080187) funded by the Ministry of Trade, Industry & Energy (MI, Korea). The authors also thank Korean Basic Science Institute (KBSI) Busan center for TG analysis.

PL

2. Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).