Lee, DB Woo, JH Park, SW 2024-01-21T15:10:59Z 2024-01-21T15:10:59Z 2021-09-05 1999-08 0921-5093 https://pubs.kist.re.kr/handle/201004/142028 Two kinds of brazing alloys, Ag56.9Cu37.6Ti5.5 and Ag54.7Cu36.3Ti9.0, were brazed on Si3N4 substrate and their oxidation behavior was investigated at 400, 500 and 600 degrees C in air. Under the experimental conditions, Ag was not oxidized, whereas Cu and Ti were oxidized parabolically. The oxide scale formed on the brazing alloy consisted of a mixture of Cu2O and CuO, which grew by the outward diffusion of cations. Beneath this external scale, an Ag-enriched zone was formed due to the selective oxidation of Cu at the surface. Some isolated and small Ag particles were present at the oxide-gas interface. Also, the inward diffusion of oxygen led to the formation of internal oxides of TiO2 and Ti2O3. (C) 1999 Elsevier Science S.A. All rights reserved. English Elsevier BV Oxidation behavior of Ag-Cu-Ti brazing alloys Article 10.1016/S0921-5093(99)00125-2 1 Materials Science and Engineering: A, v.268, no.1-2, pp.202 - 207 Materials Science and Engineering: A 268 1-2 202 207 N scopus 000081149700025 2-s2.0-0032666626 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Science & Technology - Other Topics Materials Science Metallurgy & Metallurgical Engineering Article SILICON-NITRIDE FILLER METALS COPPER JOINTS oxidation brazing alloy silver copper titanium