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Titolo:
METALLURGICAL REACTIONS CONTROLLING THE BRAZING OF AL2O3 WITH AG-CU-TI FILLER ALLOYS
Autore:
PAULASTO M; KIVILAHTI J;
Indirizzi:
MOTOROLA GMBH D-81829 MUNICH GERMANY HELSINKI UNIV TECHNOL,DEPT MAT SCI & ENGN FIN-02150 ESPOO FINLAND
Titolo Testata:
Journal of materials research
fascicolo: 2, volume: 13, anno: 1998,
pagine: 343 - 352
SICI:
0884-2914(1998)13:2<343:MRCTBO>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
THERMODYNAMIC EVALUATION; REACTION-PRODUCTS; SOLUTION MODEL; LIQUID-METALS; SYSTEM; TITANIUM; PHASES; INTERFACE; BEHAVIOR; ALUMINA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
29
Recensione:
Indirizzi per estratti:
Citazione:
M. Paulasto e J. Kivilahti, "METALLURGICAL REACTIONS CONTROLLING THE BRAZING OF AL2O3 WITH AG-CU-TI FILLER ALLOYS", Journal of materials research, 13(2), 1998, pp. 343-352

Abstract

Metallurgical reactions controlling the Ti activation in brazing of Al2O3 have been studied by means of microstructural and thermodynamic analysis. The reactions of titanium with oxygen and copper are shown tobe decisive in active brazing. The miscibility gap in the Ag-Cu-Ti system divides the liquid braze into Ag-rich (L1) and TiCu-rich (L2) liquids. The liquid L2 reacts with alumina forming the mixed oxide (Ti, Al)(4)Cu2O. Besides with alumina, Ti reacts with oxygen that the filleralloys usually contain and forms a brittle ribbon composed of TixO and Ti-Cu-O phases in the braze, The formation of Ti oxides next to the alumina is possible only in the filler alloys of highest Ag content.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/11/20 alle ore 18:36:34