Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/64828

TitleFabrication, characterization and implementation of thermo resistive TiCu(N,O) thin films in a polymer injection mold
Author(s)Oliveira, Eva
Silva, João Paulo
Laranjeira, Jorge
Macedo, Francisco
Lanceros-Méndez, S.
Vaz, F.
Ferreira, Armando
Keywordsinjection mold
sensors
temperature coefficient of resistance
thermal properties
Issue date20-Mar-2020
PublisherMultidisciplinary Digital Publishing Institute
JournalMaterials
CitationOliveira, E.; Silva, J.P.; Laranjeira, J.; Macedo, F.; Lanceros-Mendez, S.; Vaz, F.; Ferreira, A. Fabrication, Characterization and Implementation of Thermo Resistive TiCu(N,O) Thin Films in a Polymer Injection Mold. Materials 2020, 13, 1423.
Abstract(s)This paper presents the development of metallic thermoresistive thin film, providing an innovative solution to dynamically control the temperature during the injection molding process of polymeric parts. The general idea was to tailor the signal response of the nitrogen- and oxygen-doped titanium-copper thin film (TiCu(N,O))-based transducers, in order to optimize their use in temperature sensor devices. The results reveal that the nitrogen or oxygen doping level has an evident effect on the thermoresistive response of TiCu(N,O) films. The temperature coefficient of resistance values reached 2.29 × 10<sup>−2</sup> °C<sup>−1</sup>, which was almost six times higher than the traditional platinum-based sensors. In order to demonstrate the sensing capabilities of thin films, a proof-of-concept experiment was carried out, integrating the developed TiCu(N,O) films with the best response in an injection steel mold, connected to a data acquisition system. These novel sensor inserts proved to be sensitive to the temperature evolution during the injection process, directly in contact with the polymer melt in the mold, demonstrating their possible use in real operation devices where temperature profiles are a major parameter, such as the injection molding process of polymeric parts.
TypeArticle
URIhttp://hdl.handle.net/1822/64828
DOI10.3390/ma13061423
e-ISSN1996-1944
Publisher versionhttps://www.mdpi.com/1996-1944/13/6/1423
Peer-Reviewedyes
AccessOpen access
Appears in Collections:FUNCTIONAL AND SMART MATERIALS AND SURFACES FOR ADVANCED APPLICATIONS (2018 - ...)

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