Common borders. Common solutions. EUROPEAN UNION GOVERNMENT OF ROMANIA SERBIAN GOVERNMENT Structural Funds Romania – Republic of Serbia IPA Cross-border Cooperation Programme Promoting new ecologic filler alloys for soldering, based on the non-ferrous ore of the Romanian-Serbian cross-border area ECOSOLDER
Common borders. Common solutions. EUROPEAN UNION GOVERNMENT OF ROMANIA SERBIAN GOVERNMENT Structural Funds Romania – Republic of Serbia IPA Cross-border Cooperation Programme LOW MELTING ECOLOGICAL SOLDER ALLOYS BASED ON TIN AND INDIUM Dr A.Milosavljevic, Dr A.Kostov, Eng R.Todorovic Mining and Metallurgy Institute Bor SERBIA
Common borders. Common solutions. EUROPEAN UNION GOVERNMENT OF ROMANIA SERBIAN GOVERNMENT Structural Funds INTRODUCTION AND REQUIREMENTS FIND A SUBSTITUTE FOR COMMON SOLDERS LEAD-FREE CADMIUM FREE WEEE AND ROHS
Common borders. Common solutions. EUROPEAN UNION GOVERNMENT OF ROMANIA SERBIAN GOVERNMENT Structural Funds INTRODUCTION AND REQUIREMENTS 48Sn52In – the lowest melting point (118°C) 96.5Sn3.5Ag – high melting temperature Binary solder alloys do not satisfy some features, so alloys based on tin with addition of silver and indium may be the proper solution for replacement lead solders
Common borders. Common solutions. EUROPEAN UNION GOVERNMENT OF ROMANIA SERBIAN GOVERNMENT Structural Funds INITIAL DATA FOR Sn-In-Ag ALLOYS alloyXiat % SnInAgSnInAg L L L L L
Common borders. Common solutions. EUROPEAN UNION GOVERNMENT OF ROMANIA SERBIAN GOVERNMENT Structural Funds Sn-In-Ag ALLOYS METALOGRAPHY L1 Sn50In35Ag15 200x L2 Sn60In28Ag12 125x L3 Sn70In21Ag9 125x
Common borders. Common solutions. EUROPEAN UNION GOVERNMENT OF ROMANIA SERBIAN GOVERNMENT Structural Funds INVARIANT REACTIONS IN Ag-In-Sn SYSTEM ReactionTemperature, K Composition of liquid phase L+Ag 3 Sn↔(Sn)+ζ500Sn-1,9In-3,9Ag L+(Sn)↔γ+ζ482Sn-6,8In-3,3Ag L+ζ↔γ+Ag 2 In453Sn-25,5In-2,5Ag L+(In)↔β+Ag 2 In408Sn-84,6In-1,3Ag L+Ag 2 In↔β+AgIn 2 392Sn-61,1In-1,0Ag L↔β+γ+Ag 2 In387Sn-52,2In-0,9Ag
Common borders. Common solutions. EUROPEAN UNION GOVERNMENT OF ROMANIA SERBIAN GOVERNMENT Structural Funds VERTICAL PROJECTION FOR Sn-In-Ag SYSTEM A1-Ag10In18Sn72 B1-Ag10In30Sn60 C1-Ag10In45Sn45
Common borders. Common solutions. EUROPEAN UNION GOVERNMENT OF ROMANIA SERBIAN GOVERNMENT Structural Funds SUMMARY ECOLOGICAL SOLDER ALLOYS BASED ON TIN AND INDIUM ARE SUITABLE ADITION OF SILVER TO Sn-In BINARY ALLOY The most suitable are alloys with high percent of tin, and with low content of indium and silver
Common borders. Common solutions. EUROPEAN UNION GOVERNMENT OF ROMANIA SERBIAN GOVERNMENT Structural Funds Thank you for your attention!