Study on Vacuum Materials Outgassing Rate Using the Method of Switching Between Two Pumping Paths

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• 作者：Yan Feng (1)
  Meng Dong (1)
  Detian Li (1)
  Xiaobin Wu (2)
  Yongjun Cheng (1)
  Lan Zhao (1)
  Yongjun Wang (1)
  
• 关键词：Vacuum ; Outgassing rate ; SPP method ; 7075 aluminum alloy ; Measurement apparatus
• 刊名：Mapan
• 出版年：2014
• 出版时间：December 2014
• 年：2014
• 卷：29
• 期：4
• 页码：229-234
• 全文大小：235 KB
• 参考文献：1. K. Fayazbakhsh and A. Abedian, Materials selection for applications in space environment considering outgassing phenomenon, Adv. Space Res., 45 (2010) 741鈥?49. CrossRef
  2. M. Succi, R. Canino, B. Ferrario, Atomic absorption evaporation flow rate measurements of alkali metal dispensers, Vacuum, 35 (1985) 579. CrossRef
  3. Y. Ishikawa and V. Nemani膷, An overview of methods to suppress hydrogen outgassing rate from austenitic stainless steel with reference to UHV and EXV, Vacuum, 69 (2003) 501鈥?12. CrossRef
  4. X.T. Yang, J.H. Zhang, H.M. Wu et al, The ultra-high vacuum system of HIRFL-CSR, Vacuum, 68 (2003) 11鈥?8.
  5. D. Li, M. Guo, Y. Cheng, Y. Feng and D. Zhang, Vacuum-calibration apparatus with pressure down to 10-10 Pa, J. Vac. Sci. Technol., A 28 (2010) 1100鈥?104.
  6. G. Lewin, Fundament of vacuum science and technology, Mcgraw-hill Book Company, New York, (1965).
  7. Y. Yang, K. Saitoh and S. Tsukahara, An improved throughput method for the measurement of outgassing rates of materials, Vacuum, 46 (1995) 1371鈥?376. CrossRef
  8. S. Ichimura, K. Kokubun, M. Hirata, S. Tsukahara, K. Saito, Y. Ikeda, Measurement of outgassing characteristics from a vacuum chamber fabricated for pressure calibration in UHV/XHV region, Vacuum, 53 (1999) 291鈥?94. CrossRef
  9. C. Edelmann and I. Kunz, Remarks concerning the interpretation of longterm outgassing-rate measurements with the help of the rise of pressure method by the theory of Malev, Vacuum, 46 (1995) 159鈥?63. CrossRef
  10. J.R.J. Benneett, S. Hughes, R.J. Elsey, T.P. Parry, Outgassing from stainless steel and the effects of the gauges, Vacuum, 73 (2004) 149鈥?53. CrossRef
  11. M. Moraw, H. Prasol, An interpretation of outgassing characteristics of metals, Vacuum, 47 (1996) 1431鈥?436. CrossRef
  12. G. Aiello, A. Meier, T. Scherer, S. Schreck, P. Spaeh, D. Strauss, A.Vaccaro, Outgassing measurements for the ITER EC H&CD upper launcher, Fusion Eng. Des., 86 (2011) 2474鈥?477. CrossRef
  
• 作者单位：Yan Feng (1)
  Meng Dong (1)
  Detian Li (1)
  Xiaobin Wu (2)
  Yongjun Cheng (1)
  Lan Zhao (1)
  Yongjun Wang (1)
  
  1. Lanzhou Institute of Physics, Lanzhou, 730000, China
  2. Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing, 100094, China
  
• ISSN：0974-9853

文摘

A new measurement apparatus for vacuum materials outgassing rate was developed, which is mainly composed of three systems, including ultra-high vacuum system, high vacuum system, switching between two pumping paths (SPP) measurement system. The test principle of the modified SPP method is described in details, and the newly-developed technique has two main advantages over the conventional one. Firstly, the errors due to the use of two gauges with different physical properties are avoided by using only one gauge during data processing. Secondly, the outgassing rate of sample chamber, the test chamber and the outgassing or pumping effect of the gauge head can be eliminated enormously. Based on the SPP method, this paper gives the details of the experiments and the results on specific outgassing rate of the 7075 aluminum alloy sample in different conditions, namely, at different times and at different temperatures generated by infrared light irradiation heating.