Enhancement of Oxidation Resistance in Titanium by Plasma Treatment for High Temperature Applications

Titanium metal has many uses in various industries and applications due to its unique and distinctive properties, making it an important and effective material in daily use in many fields. However, they cannot be used for high-temperature applications for a long time due to their poor oxidation resistance at high temperatures. This study used compression plasma flows (CPFs) treatment to enhance the oxidation resistance of pure titanium samples in high-temperature environment. X-ray diffraction (XRD) was used to characterize air-annealed pure titanium samples with and without CPFs treatment. Without CPFs treatment, the XRD spectra of the samples annealed at 700 °C for 10 minutes and above consist of additional diffraction lines of (110), (101), and (211), representing the rutile TiO2 phase, indicating the occurrence of oxidation. However, TiO2 phases were absent in the XRD spectra of the samples treated with CPFs and then annealed under similar conditions. This indicates the effectiveness of the treatment and its ability to prevent oxidation at high temperatures. Moreover, the XRD investigation showed insignificant changes in the crystal structure of the samples annealed after plasma treatment. Thus, titanium and its alloys with CPFs treatment show potential for high-temperature applications.