Seebeck Coefficient of Thermocouples from Nickel-Coated Carbon Fibers: Theory and Experiment
AbstractThermocouples made of etched and non-etched nickel-coated carbon yarn (NiCCY) were investigated. Theoretic Seebeck coefficients were compared to experimental results from measurements of generated electric voltage by these thermocouples. The etching process for making thermocouples was performed by immersion of NiCCY in the solution containing a mixture of hydrochloric acid (HCl) (37% of concentration), and hydrogen peroxide (H2O2) in three different concentrations—3%, 6%, and 10%. Thirty minutes of etching to remove Ni from NiCCY was followed by washing and drying. Next, the ability to generate electrical voltage by the thermocouples (being a junction of the etched and the non-etched NiCCY) was measured in different ranges of temperatures, both a cold junction (291.15–293.15 K) and a hot junction (293.15–325.15 K). A formula predicting the Seebeck coefficient of this thermocouple was elaborated, taking into consideration resistance values of the tested samples. It was proven that there is a good agreement between the theoretical and experimental data, especially for the yarns etched with 6% and 10% peroxide (both were mixed with HCl). The electrical resistance of non-fully etched nickel remaining on the carbon fiber surface ( ) can have a significant effect on the thermocouples’ characteristics. View Full-Text
Share & Cite This Article
Hardianto, H.; De Mey, G.; Ciesielska-Wrόbel, I.; Hertleer, C.; Van Langenhove, L. Seebeck Coefficient of Thermocouples from Nickel-Coated Carbon Fibers: Theory and Experiment. Materials 2018, 11, 922.
Hardianto H, De Mey G, Ciesielska-Wrόbel I, Hertleer C, Van Langenhove L. Seebeck Coefficient of Thermocouples from Nickel-Coated Carbon Fibers: Theory and Experiment. Materials. 2018; 11(6):922.Chicago/Turabian Style
Hardianto, Hardianto; De Mey, Gilbert; Ciesielska-Wrόbel, Izabela; Hertleer, Carla; Van Langenhove, Lieva. 2018. "Seebeck Coefficient of Thermocouples from Nickel-Coated Carbon Fibers: Theory and Experiment." Materials 11, no. 6: 922.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.