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The purpose of this research indicates the experimental results of the Metal Inert Gas (MIG) welding process of butt joint between A5052 alloys and SS400 steel using ER4043 filler metal. The mechanical properties of the joints were investigate. The results of the analysis shows that the intermetallic compound layer appeared at interface between steel and welding seam with their width increasing from...
The wreckage of mechanical elements caused by the wear has been thought as an important problem for the mechanical engineers. Hence, it is necessary to improve the material properties of mechanical elements for the purpose of wear resistance. Moreover, low friction always plays an important role for saving energy. The technologies of materials science and surface engineering have been used widely...
This research proposes an economic and effective experimental design method of multiple characteristics to deal with the parameter design problem with many continuous parameters and levels. It uses TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) and ANN (Artificial Neural Network) to train the optimal function framework of parameter design. It combines SC (Soft Computing) of...
Implementation of Cu metallization for high-speed, fine geometry IC devices is progressing rapidly throughout the industry. Due to the metallurgical constraints associated with this material, it is necessary to provide for barrier and top metal layers suited to the interconnect technology of choice (i.e., flip chip or wire bond). In the case of products intended for wire bonding, the Cu is generally...
To overcome the limits encountered in P/Al solar cells on multicrystalline material, a cell structure with local rear contacts, called PERC cell (passivated emitter and rear contacts) is proposed. A solar cell process has been designed to implement the structure, with good results achieved in the first batches. An efficiency of 17% has been achieved on low resistivity multicrystalline silicon.
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