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Title of Journal: Microsyst Technol

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Abbravation: Microsystem Technologies

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Springer-Verlag

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1432-1858

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Effect of physical vapor deposition metallic thin

Authors: Lei Xie Monika LeesterSchädel Gerhard Ziegmann Stephanus Büttgenbach
Publish Date: 2010/04/06
Volume: 16, Issue: 6, Pages: 1009-1013
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Abstract

Micro injection molded polymeric parts coated with functional thin films/layers show off the promising applications in microsystems area But the unfavorable and unavoidable defect of weld line in micro injection molding part leads to detrimental mechanical and surface properties The possibility of the functional thin film for enhancing micro injection molded weld lines was investigated Two typical coating materials aluminum and titanium with various film thicknesses 400 600 800 nm were deposited on one side of the micro injection molded weld line tensile sample via physical vapor deposition PVD method The coated micro weld line samples were characterized by tensile tests The results show that PVD films of aluminum and titanium can reinforce the strength and stiffness of micro injection molded weld line even at thin thickness levels But when the film thickness is increasing the weaker adhesion between metallic films and polymers decreased the PVD films’ enhancing performance for micro weld line mechanical properties due to the degradation of polymers related to longer time exposure under high temperatureThe authors would like to thank DFG Deutsche Forschungsgemeinschaft for the financial support of the investigation And the thanks definitely should be extended to Dr Christian Ruether and Prof Detlef Kip in Institute of Energy Research and Physical Technologies Optical Technologies TU Clausthal for their helpful works on PVD coating preparation

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