Study on Multi-Layering of Metal Micro-Reactor Using Diffusion Bonding

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        This paper reports a multilayered micro-reactor of thin metal plates for a higher heat transfer efficiency compared with glass or silicon plates. In addition, diffusion bonding is used to bond the plates, because it is possible to bond a lot of plates in one process. We chose stainless steal SUS316 as a material of the micro-reactor. It is suitable for micro-reactors for its high corrosion resistance. We investigated bonding strength of the test pieces and optimize the parameters of bonding condition. We measured tensile strength and the Charpy value. The result indicates that the higher bonding temperature provides higher bonding strength and less voids. On the other hand, the deformation of the micro-channels should be small. We prototyped a multilayered micro-reactor at 10MPa, 1100 degree Celsius. It has totally 20 layers for reaction and coolant. We demonstrated a exothermic reaction with acid, which is nitration of benzene, using the prototype. From the experiment, it is proved that the diffusion bonding improved the heat transfer efficiency of the micro-reactor. [This abstract is not included in the PDF]<br>

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  • 生産研究

    生産研究 64 (1), 83-86, 2012

    東京大学生産技術研究所

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