| Autor: |
Kobayashi Y., Shirochi T., Yasuda Y., Morita T. |
| Jazyk: |
angličtina |
| Rok vydání: |
2013 |
| Předmět: |
|
| Zdroj: |
Journal of Mining and Metallurgy. Section B: Metallurgy, Vol 49, Iss 1, Pp 65-70 (2013) |
| Druh dokumentu: |
article |
| ISSN: |
1450-5339 |
| DOI: |
10.2298/JMMB120927025K |
| Popis: |
The present paper describes a metal-metal bonding technique using Cu nanoparticles containing Ag nanoparticles (Ag/Cu nanoparticles). The Ag/Cu nanoparticles with particle sizes of 30-85 nm and crystal sizes of 9.3 nm for Cu and 8.1 nm for Ag were produced by reducing 5.0x10-3 M Ag+ (AgClO4) and 5.0x10-3 M Cu2+ (Cu(NO3)2) simultaneously with 1.0 M hydrazine in aqueous solution containing 1.0 g/L poly(vinylpyrrolidone) as dispersing agent and 5Ч10-3 M citric acid as stabilizer at room temperature. Discs of metallic Cu or metallic Ag were successfully bonded under annealing at 400ºC and pressurizing at 1.2 MPa for 5 min in H2 gas with help of the Ag/Cu particles. The shear strengths required for separating the bonded discs were as large as 19.7 for the Cu discs and 16.0 MPa for the Ag discs. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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