비의류제품

potentiometric solid-state oxygen sensor using lanthanum fluoride operative at room temperature

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 460
a solid electrolyte oxygen sensor using an laf/sub 3/ single crystal was examined for detection of oxygen at room temperature the potential of the sensing electrode relative to that of the reference electrode varied almost logarithmically with the oxygen partial pressure. while newly fabricated elements showed a very slow response, their exposure to water vapour at 150 degrees c for 12 h followed by repetition of exposure to high and low p(o/sub 2/) reduced the 90 percent response time to about 2 min even at room temperature. both xps and infrared spectra suggested the formation of a partially hydroxylated surface with the pretreatment. it was also found that the same sensor could respond sensitively to oxygen dissolved in water
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