Alkanolamines as activators in no-clean flux systems: investigation of humidity robustness and solderability
| Autor: | Feng Li, Morten Stendahl Jellesen, Kamila Piotrowska, Rajan Ambat |
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| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Thermogravimetric analysis Diethanolamine Absorption of water Materials science Triisopropanolamine Solderability Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Dielectric spectroscopy chemistry.chemical_compound chemistry Chemical engineering Soldering 0103 physical sciences Alkanolamine Electrical and Electronic Engineering |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 32:4961-4981 |
| ISSN: | 1573-482X 0957-4522 |
| DOI: | 10.1007/s10854-020-05235-0 |
| Popis: | This paper systematically investigates the humidity robustness and solderability of five alkanolamines used as activators in flux systems, and their effect was assessed along with the influence of soldering temperature. Electrochemical impedance spectroscopy and chronoamperometry techniques were used to obtain a better understanding of water adsorption, absorption, and protonation tendencies of alkanolamine candidates. Potentiodynamic polarization, hot plate spreading test, and wetting balance test were adapted for the etching ability and solderability evaluation. Thermal degradation of alkanolamine compounds was analyzed using thermogravimetric analysis (TGA) and Fourier-transform infrared spectroscopy (FT-IR). The combined results indicate a strong water absorption and protonation of diethanolamine (DEA), triethanolamine (TEA), and triisopropanolamine (TIPA), rendering them not reliable and not feasible as activators. Poor solderability of alkanolamine-based fluxes was inferred based on their thermal degradation behavior and poor oxide removal ability under the soldering conditions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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