Berlanga-Labari Carlos, Catalán Leyre, Palacio José F, Pérez Gurutze, Astrain David
Institute for Advanced Materials and Mathematics (INAMAT2), Engineering Department, Public University of Navarre, Campus Arrosadía, 31006 Pamplona, Spain.
Institute of Smart Cities (ISC), Engineering Department, Public University of Navarre, Campus Arrosadía, 31006 Pamplona, Spain.
Materials (Basel). 2021 Dec 12;14(24):7657. doi: 10.3390/ma14247657.
Thermoelectric generators have emerged as an excellent solution for the energy supply of volcanic monitoring stations due to their compactness and continuous power generation. Nevertheless, in order to become a completely viable solution, it is necessary to ensure that their materials are able to resist in the acidic environment characteristic of volcanoes. Hence, the main objective of this work is to study the resistance to corrosion of six different metallic materials that are candidates for use in the heat exchangers. For this purpose, the metal probes have been buried for one year in the soil of the Teide volcano (Spain) and their corrosion behavior has been evaluated by using different techniques (OM, SEM, and XRD). The results have shown excessive corrosion damage to the copper, brass, and galvanized steel tubes. After evaluating the corrosion behavior and thermoelectric performance, AISI 304 and AISI 316 stainless steels are proposed for use as heat exchangers in thermoelectric devices in volcanic environments.
由于其紧凑性和持续发电能力，热电发电机已成为火山监测站能源供应的绝佳解决方案。然而，为了成为一个完全可行的解决方案，有必要确保其材料能够抵抗火山特有的酸性环境。因此，这项工作的主要目的是研究六种不同金属材料在热交换器中使用时的耐腐蚀性能。为此，将金属探针埋在西班牙泰德火山的土壤中一年，并使用不同技术（光学显微镜、扫描电子显微镜和X射线衍射）评估其腐蚀行为。结果表明，铜管、黄铜管和镀锌钢管受到了过度的腐蚀损坏。在评估了腐蚀行为和热电性能后，建议将AISI 304和AISI 316不锈钢用作火山环境中热电装置的热交换器。
