Thermite and related processes have attracted considerable attentions as highly useful technologies for material and energy supplies in extreme environments such as geothermal and disaster-stricken areas as well as in space exploration. As part of the development of casing pipes used in geothermal power plants started from the 1970s, long ceramic-lined pipes have been obtained via thermite reaction under effective centrifugal force without any additional heat treatment [Centrifugal-Thermite (C-T) process]. The potentials of the ceramic-lined pipes in deeper geothermal utilizations are revalidated in details by reviewing the results obtained through the erosion-corrosion tests carried out under the conditions of high velocities (up to 100 m/s) and various acidities (from pH 2.0 to pH 4.0) of two-phase flows provided by the geothermal field test apparatus at the Onikobe geothermal power plant in Japan. By reducing the FeO content of the ceramic layer processed under proper additives and reactant amounts, the tested ceramic-lined pipes were significantly improved compared to highly corrosion-resistant stainless steels. The technological advantages obtained through the development of the C-T process can show a useful model to promote thermite-related technologies onward.

中文翻译：

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在极端地热环境中使用的与铝热剂相关的技术

作为在极端环境（例如地热和灾区）以及太空探索中用于物质和能源供应的高效技术，铝热剂和相关工艺引起了广泛的关注。从1970年代开始，作为用于地热发电厂的套管的开发的一部分，通过在有效离心力下进行铝热反应而无需任何额外的热处理[Centrifugal-Thermite（CT）工艺]即可获得长衬里陶瓷管。通过回顾在高速（最高100 m / s）和各种酸度（pH 2.0以上）条件下进行的腐蚀-腐蚀试验所获得的结果，详细地验证了深层地热利用中的陶瓷衬管的潜力。达到pH 4。0）由日本Onikobe地热发电厂的地热场测试设备提供的两相流。通过降低在适当的添加剂和反应物用量下加工的陶瓷层的FeO含量，与高度耐腐蚀的不锈钢相比，可以显着改善所测试的陶瓷衬里管道。通过CT工艺的发展获得的技术优势可以显示出一个有用的模型，以进一步推动与铝热剂相关的技术。