Wszystkie pola: solder alloys - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Investigation of the Wetting Properties of Ternary Lead-Free Solder Alloys on Copper Substrate
Autorzy:: Omaç, F.
Ozyurek, D.
Erer, M.
Powiązania:: https://bibliotekanauki.pl/articles/1033343.pdf
Data publikacji:: 2017-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 81.05.Bx
Opis:: In the present study, wetting behaviors of Sn-9Zn-xAl ternary lead-free solder alloys produced by the addition of Al in various amounts binary Sn-9Zn eutectic lead-free solder alloy (wt%) were investigated. Contact angles of alloys were measured by using of the sessile drop method. Microstructures, inter-metallic phases, and melting temperatures of alloys were characterized by optic microscope and scanning electron microscope and energy dispersive X-ray spectroscopy, X-ray diffraction, and differential scanning calorimeter, and effects of the amount of Al on microstructure were investigated. As a result, the studies show that Al-rich areas were found on microstructure of Sn-9Zn-xAl alloys. The lowest melting temperature for Sn-9Zn-0.5Al and Sn-9Zn-0.7Al alloys was determined as 200.9°C. It was determined that wetting capability of Sn-9Zn-xAl alloys failed because of oxidation.
Źródło:: Acta Physica Polonica A; 2017, 131, 1; 165-167
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Kinetics of Corrosion Process in H2SO4 and HNO3 Aqueous Solutions of Lead Free Sn-Ag-Cu Solder Alloys
Autorzy:: Guśpiel, J.
Wierzbicka-Miernik, A.
Reczyński, W.
Powiązania:: https://bibliotekanauki.pl/articles/352914.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: electronic materials
polarization
acid corrosion
Opis:: This paper presents the results of the corrosion resistance of Sn-Ag-Cu alloys in air-saturated aqueous solutions containing NO₃^-, SO₄^2- ions, whose concentration was equivalent to their contents in acid rains and in concentrations 10 - 100 times higher. The Ag, Cu and Sn concentrations in the corrosive media were determined using the Atomic Absorption Spectrometry. The specific dissolution rate and corrosion current were derived using the a rotating disc technique. The corrosion rate of Sn- Ag-Cu alloys depends on pH of the examined solutions and on the concentration of oxygen near the phase boundary. In the whole range of concentrations of the applied H₂SO₄ + HNO₃ mixtures of acids, the pure Sn was more corrosion resistant than eutectic alloy as well as the near eutectic one, following the sequence: Sn>Sn3.66Ag0.91Cu>3.8Ag0.7Cu.
Źródło:: Archives of Metallurgy and Materials; 2016, 61, 2A; 559-568
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

Artykuł

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