Liquid infiltrated powder interlayer bonding: a process for large gap joining

摘要: AbstractThe liquid infiltrated powder interlayer bonding (LIPIB) process is proposed to make large gap, transient phase joints. Some basic aspects of the LIPIB are discussed. In process, a joint with high mechanical properties requires low volume fraction porosity in and concentrations melting point depressants joint. To achieve fully gap joint, it essential maintain an open pore structure at initial stage infiltration, while allowing complete elimination pores behind infiltration front. Approximate analytical solutions applied describe dissolution capillaries isothermal diffusional solidification during infiltration. Calculations based on Cu–Ag binary system show that kinetics strongly affected by geometry capillaries. When effective capillary size smaller than critical radius certain temperature, iso...