Investigation of the Oxidation Behavior of Cr<sub>20</sub>Mn<sub>17</sub>Fe<sub>18</sub>Ta<sub>23</sub>W<sub>22</sub> and Microdefects Evolution Induced by Hydrogen Ions before and after Oxidation
The oxidation behavior of body-centered cubic (bcc) structure Cr<sub>20</sub>Mn<sub>17</sub>Fe<sub>18</sub>Ta<sub>23</sub>W<sub>22</sub> refractory high-entropy alloy (RHEA) and the microdefects induced by hydrogen ions before and after oxi...
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| author | Bao-Zhen Wu Te Zhu Xing-Zhong Cao Zhao-Ming Yang Kun Zhang Fu-Jun Gou Yuan Wang |
| author_facet | Bao-Zhen Wu Te Zhu Xing-Zhong Cao Zhao-Ming Yang Kun Zhang Fu-Jun Gou Yuan Wang |
| author_sort | Bao-Zhen Wu |
| collection | DOAJ |
| description | The oxidation behavior of body-centered cubic (bcc) structure Cr<sub>20</sub>Mn<sub>17</sub>Fe<sub>18</sub>Ta<sub>23</sub>W<sub>22</sub> refractory high-entropy alloy (RHEA) and the microdefects induced by hydrogen ions before and after oxidation were investigated. The results revealed that compared with oxidizing Cr<sub>20</sub>Mn<sub>17</sub>Fe<sub>18</sub>Ta<sub>23</sub>W<sub>22</sub> at 800 °C (6.7 °C/min) for 4 h (ST3, Ar:O<sub>2</sub> = 3:1), the heating procedure of oxidizing Cr<sub>20</sub>Mn<sub>17</sub>Fe<sub>18</sub>Ta<sub>23</sub>W<sub>22</sub> at 300 °C (6 °C/min) for 2 h and then increased to 800 °C (5 °C/min) for 4 h is more conducive to the production of oxides without spalling on the surface, i.e., HT1 (Ar:O<sub>2</sub> = 1:1), HT2 (Ar:O<sub>2</sub> = 2:1) and HT3 (Ar:O<sub>2</sub> = 3:1) samples. The oxidation of Cr<sub>20</sub>Mn<sub>17</sub>Fe<sub>18</sub>Ta<sub>23</sub>W<sub>22</sub> RHEA is mainly controlled by the diffusion of cations instead of affinities with O. Additionally, HT1 and HT3 samples irradiated with a fluence of 3.9 × 10<sup>22</sup> cm<sup>−2</sup> hydrogen ions (60 eV) were found to have a better hydrogen irradiation resistance than Cr<sub>20</sub>Mn<sub>17</sub>Fe<sub>18</sub>Ta<sub>23</sub>W<sub>22</sub> RHEA. The microdefects in irradiated Cr<sub>20</sub>Mn<sub>17</sub>Fe<sub>18</sub>Ta<sub>23</sub>W<sub>22</sub> mainly existed as hydrogen bubbles, hydrogen-vacancy (H-V) complexes and vacancy/vacancy clusters. The microdefects in irradiated HT3 were mainly vacancies and H-V complexes, while the microdefects in irradiated HT1 mainly existed as vacancies and vacancy clusters, as large amounts of hydrogen were consumed to react with oxides on the HT1 surface. The oxides on the surface of the HT3 sample were more stable than those on HT1 under hydrogen irradiation. |
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| spelling | doaj.art-67c64aa0a9ef492daeb660bea90bb2282023-11-23T23:20:30ZengMDPI AGMaterials1996-19442022-03-01155189510.3390/ma15051895Investigation of the Oxidation Behavior of Cr<sub>20</sub>Mn<sub>17</sub>Fe<sub>18</sub>Ta<sub>23</sub>W<sub>22</sub> and Microdefects Evolution Induced by Hydrogen Ions before and after OxidationBao-Zhen Wu0Te Zhu1Xing-Zhong Cao2Zhao-Ming Yang3Kun Zhang4Fu-Jun Gou5Yuan Wang6Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, ChinaMulti-Disciplinary Research Center, Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing 100049, ChinaMulti-Disciplinary Research Center, Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing 100049, ChinaKey Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, ChinaKey Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, ChinaKey Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, ChinaKey Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, ChinaThe oxidation behavior of body-centered cubic (bcc) structure Cr<sub>20</sub>Mn<sub>17</sub>Fe<sub>18</sub>Ta<sub>23</sub>W<sub>22</sub> refractory high-entropy alloy (RHEA) and the microdefects induced by hydrogen ions before and after oxidation were investigated. The results revealed that compared with oxidizing Cr<sub>20</sub>Mn<sub>17</sub>Fe<sub>18</sub>Ta<sub>23</sub>W<sub>22</sub> at 800 °C (6.7 °C/min) for 4 h (ST3, Ar:O<sub>2</sub> = 3:1), the heating procedure of oxidizing Cr<sub>20</sub>Mn<sub>17</sub>Fe<sub>18</sub>Ta<sub>23</sub>W<sub>22</sub> at 300 °C (6 °C/min) for 2 h and then increased to 800 °C (5 °C/min) for 4 h is more conducive to the production of oxides without spalling on the surface, i.e., HT1 (Ar:O<sub>2</sub> = 1:1), HT2 (Ar:O<sub>2</sub> = 2:1) and HT3 (Ar:O<sub>2</sub> = 3:1) samples. The oxidation of Cr<sub>20</sub>Mn<sub>17</sub>Fe<sub>18</sub>Ta<sub>23</sub>W<sub>22</sub> RHEA is mainly controlled by the diffusion of cations instead of affinities with O. Additionally, HT1 and HT3 samples irradiated with a fluence of 3.9 × 10<sup>22</sup> cm<sup>−2</sup> hydrogen ions (60 eV) were found to have a better hydrogen irradiation resistance than Cr<sub>20</sub>Mn<sub>17</sub>Fe<sub>18</sub>Ta<sub>23</sub>W<sub>22</sub> RHEA. The microdefects in irradiated Cr<sub>20</sub>Mn<sub>17</sub>Fe<sub>18</sub>Ta<sub>23</sub>W<sub>22</sub> mainly existed as hydrogen bubbles, hydrogen-vacancy (H-V) complexes and vacancy/vacancy clusters. The microdefects in irradiated HT3 were mainly vacancies and H-V complexes, while the microdefects in irradiated HT1 mainly existed as vacancies and vacancy clusters, as large amounts of hydrogen were consumed to react with oxides on the HT1 surface. The oxides on the surface of the HT3 sample were more stable than those on HT1 under hydrogen irradiation.https://www.mdpi.com/1996-1944/15/5/1895Cr<sub>20</sub>Mn<sub>17</sub>Fe<sub>18</sub>Ta<sub>23</sub>W<sub>22</sub> refractory high-entropy alloy (RHEA)oxidizeddefectshydrogen ions irradiation |
| spellingShingle | Bao-Zhen Wu Te Zhu Xing-Zhong Cao Zhao-Ming Yang Kun Zhang Fu-Jun Gou Yuan Wang Investigation of the Oxidation Behavior of Cr<sub>20</sub>Mn<sub>17</sub>Fe<sub>18</sub>Ta<sub>23</sub>W<sub>22</sub> and Microdefects Evolution Induced by Hydrogen Ions before and after Oxidation Materials Cr<sub>20</sub>Mn<sub>17</sub>Fe<sub>18</sub>Ta<sub>23</sub>W<sub>22</sub> refractory high-entropy alloy (RHEA) oxidized defects hydrogen ions irradiation |
| title | Investigation of the Oxidation Behavior of Cr<sub>20</sub>Mn<sub>17</sub>Fe<sub>18</sub>Ta<sub>23</sub>W<sub>22</sub> and Microdefects Evolution Induced by Hydrogen Ions before and after Oxidation |
| title_full | Investigation of the Oxidation Behavior of Cr<sub>20</sub>Mn<sub>17</sub>Fe<sub>18</sub>Ta<sub>23</sub>W<sub>22</sub> and Microdefects Evolution Induced by Hydrogen Ions before and after Oxidation |
| title_fullStr | Investigation of the Oxidation Behavior of Cr<sub>20</sub>Mn<sub>17</sub>Fe<sub>18</sub>Ta<sub>23</sub>W<sub>22</sub> and Microdefects Evolution Induced by Hydrogen Ions before and after Oxidation |
| title_full_unstemmed | Investigation of the Oxidation Behavior of Cr<sub>20</sub>Mn<sub>17</sub>Fe<sub>18</sub>Ta<sub>23</sub>W<sub>22</sub> and Microdefects Evolution Induced by Hydrogen Ions before and after Oxidation |
| title_short | Investigation of the Oxidation Behavior of Cr<sub>20</sub>Mn<sub>17</sub>Fe<sub>18</sub>Ta<sub>23</sub>W<sub>22</sub> and Microdefects Evolution Induced by Hydrogen Ions before and after Oxidation |
| title_sort | investigation of the oxidation behavior of cr sub 20 sub mn sub 17 sub fe sub 18 sub ta sub 23 sub w sub 22 sub and microdefects evolution induced by hydrogen ions before and after oxidation |
| topic | Cr<sub>20</sub>Mn<sub>17</sub>Fe<sub>18</sub>Ta<sub>23</sub>W<sub>22</sub> refractory high-entropy alloy (RHEA) oxidized defects hydrogen ions irradiation |
| url | https://www.mdpi.com/1996-1944/15/5/1895 |
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