Keywords: Power electronics High temperature Shear Creep Nano-indentation Hardening a b s t r a c t An experimental investigation of two potential candidate materials for the diamond die attachment is presented in this framework. These efforts are motivated by the need of developing a power electronic packaging for the diamond chip. The performance of the designed packaging relies particularly ...

The in ̄uence of chloride ion concentration and pH on the corrosion and electrochemical behaviour of die-cast and ingot-cast AZ91D alloy have been studied with a focus on the stability of microconstituents in these environments. The experimental techniques used include immersion studies, potentiodynamic polarization, X-ray di€raction and optical and scanning electron microscopy. The corrosion ra...

Microstructure of Al-Si alloy castings depends most generally on melt preparation and on the cooling rate imposed by the thermal modulus of the component. In the case of Al-Si alloys, emphasis is put during melt preparation on refinement of pro-eutectic (Al) grains and on modification of the Al-Si eutectic. Thermal analysis has been used since long to check melt preparation before casting, i.e....

Eutectic Sn–Pb is historically the most important solder alloy, thus its reactions will serve as relevant references for Pb-free solder substitutes. Here, an investigation has been carried out to compare the dissolution kinetics of the Cu pad of the ball grid array (BGA) substrate with the molten conventional eutectic Sn–Pb solder having different volumes. BGA solder ball of 760 and 500 m of di...

The helium production rates in liquid metals (Pb-Li eutectic alloy, LLE and others) Blanket Breeders (BB) are nearly mol-to-mol linked to tritium intimately associated with the compulsory requirement of high self-sufficiency next fusion reactors. When is oversaturated solubility limit exceeded, atoms can nucleate form bubbles. presence bubbles within channels could have severe impact on diverse...

The present work describes the effect of the solidification processing and alloy chemistry on the chilling tendency index, CT, and the chill, w, of wedge-shaped castings made of cast iron. In this work, theoretical predictions were experimentally verified for the role of elements, such as C, Si, Mn, P and S, on the cast iron CT. In addition, inoculation and fading effects were considered in the...