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The Al oxidation layer in the manufactures of direct aluminum bonded Al2O3 substrates (DAB) has been a long-term trouble for industries. In this work we propose a new method for fabricating the DAB substrates with no requirement of high vacuum or active O2-getters. The new method comprises two stages: (i) Cu-film is bonded onto Al2O3 ceramic surface via DBC method; (ii) Al foil is joined to the DBC...
Magnesium–magnesium bimetal composites were prepared by insert molding method in this study. To achieve good metallurgical bonding between AZ31 insert and AZ91 matrix, different fabrication process parameters such as volume ratio (V91:V31=1:1 or 2:1) and insert temperature (650°C, 675°C, 700°C), were tested. It was shown that high-quality metallurgical interface bonding could be achieved when the...
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