Advances in Materials Science and Engineering · 2014 · 15 citations · 19 references
EngineeringMaterials EngineeringMaterials ScienceCeramicsJoiningMetallurgyCeramic BondingDiffusion BondingJoining Of Dissimilar MaterialsJoining ProcessesMetalsSilicon MaterialsBond Formation MechanismsBonding MechanismsHigh-temperature JoiningIntermetallic FormationShear Strength AnalysisSiliconSolderingWetting
This paper deals with soldering high-purity brittle, nonmetallic materials such as SiO 2 , Si, and C (graphite). However, these materials exert poor wettability when using tin solder. Therefore, to reduce the wetting angle, an Sn solder alloyed with active Ti element was used. At a soldering temperature of 860°C and 15 min soldering time, the wetting angle on SiO 2 ceramics was 30°, on silicon 42°, and on graphite 52°. All these wetting angles are below 90° and are acceptable for soldering. It has been shown that the bond in all joined materials (SiO 2 , Si, and C) was of a diffusion character. New intermetallic products were formed on the boundary with nonmetal, thus allowing bond formation. The shear strength of SiO 2 ceramics attained an average value of 17 MPa.
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