Study on Coated Zr-V-Cr Getter with Pore Gradient Structure for Hydrogen Masers
As the core component of satellite navigation, the hydrogen maser needs a high vacuum environment to maintain the stability of the frequency signal. The getter pump, composed of various non-evaporable getters, plays an important role in maintaining the high vacuum. In this paper, the Zr<sub>10...
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2022-09-01
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| author | Jiale Zhang Huihui Song Jinyu Fang Xueling Hou Shuiming Huang Jie Xiang Tao Lu Chao Zhou |
| author_facet | Jiale Zhang Huihui Song Jinyu Fang Xueling Hou Shuiming Huang Jie Xiang Tao Lu Chao Zhou |
| author_sort | Jiale Zhang |
| collection | DOAJ |
| description | As the core component of satellite navigation, the hydrogen maser needs a high vacuum environment to maintain the stability of the frequency signal. The getter pump, composed of various non-evaporable getters, plays an important role in maintaining the high vacuum. In this paper, the Zr<sub>100-x</sub>Cu<sub>x</sub> (x = 0, 2, 4, 6)/Zr<sub>56.97</sub>V<sub>35.85</sub>Cr<sub>7.18</sub> getter was studied and the contradiction between sorption performance and mechanical properties was solved. The Zr-V-Cr getter, a better candidate for getter pump, exists for problems which will destroy the high vacuum and affect the service life of the hydrogen maser. To solve the problem of dropping powder from Zr-V-Cr getter, Zr-Cu films were coated on the surface of Zr-V-Cr matrix to obtain the pore gradient structure. After vacuum sintering, the interface showed gradient structure and network change in pore structure from Zr-Cu film to Zr-V-Cr matrix. These characteristic structures made Zr-V-Cr getter have good absorption properties, which is better than a similar product of SAES company and mechanical properties. Because the Zr-Cu film on Zr-V-Cr matrix effectively prevented dropping powders from the matrix, (Zr-Cu)/(Zr-V-Cr) getter solved the problem of dropping powder. The self-developed new getter with pore gradient structure is of great significance for maintaining the high vacuum of hydrogen maser in the future. |
| first_indexed | 2024-03-10T01:34:37Z |
| format | Article |
| id | doaj.art-786b3c89b4904ff6bc85cbf337d3234f |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T01:34:37Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-786b3c89b4904ff6bc85cbf337d3234f2023-11-23T13:36:23ZengMDPI AGMaterials1996-19442022-09-011517614710.3390/ma15176147Study on Coated Zr-V-Cr Getter with Pore Gradient Structure for Hydrogen MasersJiale Zhang0Huihui Song1Jinyu Fang2Xueling Hou3Shuiming Huang4Jie Xiang5Tao Lu6Chao Zhou7School of Materials Science and Engineering, Shanghai University, Shanghai 200072, ChinaSchool of Materials Science and Engineering, Shanghai University, Shanghai 200072, ChinaSchool of Materials Science and Engineering, Shanghai University, Shanghai 200072, ChinaSchool of Materials Science and Engineering, Shanghai University, Shanghai 200072, ChinaShanghai Kingv Material Technology Co., Ltd., Shanghai 200000, ChinaSchool of Materials Science and Engineering, Shanghai University, Shanghai 200072, ChinaShanghai Kingv Material Technology Co., Ltd., Shanghai 200000, ChinaNational Key Laboratory of Science and Technology on Vacuum Technology and Physics, Lanzhou Institute of Physics, Shanghai 201204, ChinaAs the core component of satellite navigation, the hydrogen maser needs a high vacuum environment to maintain the stability of the frequency signal. The getter pump, composed of various non-evaporable getters, plays an important role in maintaining the high vacuum. In this paper, the Zr<sub>100-x</sub>Cu<sub>x</sub> (x = 0, 2, 4, 6)/Zr<sub>56.97</sub>V<sub>35.85</sub>Cr<sub>7.18</sub> getter was studied and the contradiction between sorption performance and mechanical properties was solved. The Zr-V-Cr getter, a better candidate for getter pump, exists for problems which will destroy the high vacuum and affect the service life of the hydrogen maser. To solve the problem of dropping powder from Zr-V-Cr getter, Zr-Cu films were coated on the surface of Zr-V-Cr matrix to obtain the pore gradient structure. After vacuum sintering, the interface showed gradient structure and network change in pore structure from Zr-Cu film to Zr-V-Cr matrix. These characteristic structures made Zr-V-Cr getter have good absorption properties, which is better than a similar product of SAES company and mechanical properties. Because the Zr-Cu film on Zr-V-Cr matrix effectively prevented dropping powders from the matrix, (Zr-Cu)/(Zr-V-Cr) getter solved the problem of dropping powder. The self-developed new getter with pore gradient structure is of great significance for maintaining the high vacuum of hydrogen maser in the future.https://www.mdpi.com/1996-1944/15/17/6147hydrogen maserZr-V-Cr getterpore gradient structurerandom vibration testthermal infrared detection |
| spellingShingle | Jiale Zhang Huihui Song Jinyu Fang Xueling Hou Shuiming Huang Jie Xiang Tao Lu Chao Zhou Study on Coated Zr-V-Cr Getter with Pore Gradient Structure for Hydrogen Masers Materials hydrogen maser Zr-V-Cr getter pore gradient structure random vibration test thermal infrared detection |
| title | Study on Coated Zr-V-Cr Getter with Pore Gradient Structure for Hydrogen Masers |
| title_full | Study on Coated Zr-V-Cr Getter with Pore Gradient Structure for Hydrogen Masers |
| title_fullStr | Study on Coated Zr-V-Cr Getter with Pore Gradient Structure for Hydrogen Masers |
| title_full_unstemmed | Study on Coated Zr-V-Cr Getter with Pore Gradient Structure for Hydrogen Masers |
| title_short | Study on Coated Zr-V-Cr Getter with Pore Gradient Structure for Hydrogen Masers |
| title_sort | study on coated zr v cr getter with pore gradient structure for hydrogen masers |
| topic | hydrogen maser Zr-V-Cr getter pore gradient structure random vibration test thermal infrared detection |
| url | https://www.mdpi.com/1996-1944/15/17/6147 |
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