• 한국수소및신에너지학회논문집
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• 제15권3호
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• pp.220-227
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• 2004

The purpose of this paper is, based on the theoretical background of the principle of gas purification and absorption, and the absorbing ability of metals, to syudy the efficiency of gas purification of inorganic gases using Zr alloys, so as to contribute to the IT industry. To produce and distribute gas with high purity and ultra-high purity, different types of gas purifier are currently being used: distillation type, getter type, catalyst type, absorption at low-temperature type, and membrane separation equipment. From the different purification methods mentioned above, the getter type gas purifier is capable of not only high performance and capacity but also P.O.U(Point Of Use) method. The key of the getter type gas purifier is its efficiency of gas purification, which is the subject chosen for this study.

• 한국재료학회:학술대회논문집
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• 한국재료학회 1999년도 춘계학술발표강연 및 눈문개요집
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• pp.48-48
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• 1999

• 한국재료학회지
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• 제24권11호
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• pp.573-577
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• 2014

The existing metal getters are invariably covered with thin oxide layers in air and the native oxide layer must be dissolved into the getter materials for activation. However, high temperature is needed for the activation, which leads to unavoidable deleterious effects on the devices. Therefore, to improve the device efficiency and gas-adsorption properties of the device, it is essential to synthesize the getter with a method that does not require a thermal activation temperature. In this study, getter material was synthesized using palladium oxide (PdOx) which can adsorb $H_2$ gas. To enhance the efficiency of the hydrogen and moisture absorption, a porous layer with a large specific area was fabricated by an etching process and used as supporting substrates. It was confirmed that the moisture-absorption performance of the $SiO_2/Si$ was characterized by water vapor volume with relative humidity. The gas-adsorption properties occurred in the absence of the activation process.

• 한국진공학회지
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• 제13권2호
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• pp.47-53
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• 2004

국내 진공기술 기반을 구축하는 국가사업의 일환으로 게터펌프 성능평가장치를 개발하고 있다. 본격적으로 장치를 구성하기 전에 평가절차의 개발, 장치 설계요건 및 사양을 확정하기 위해 예비실험장치를 만들었다. 이 장치를 이용하여 밀봉형 기기에 들어가는 비교적 활성화 온도가 낮은 게터 소자들의 특성평가 절차를 만들고 이를 적용하여 수소, 일산화탄소, 질소 등에 대해 배기속도와 배기용량을 측정해 보았다. 주로 고순도 기체 공급장치용으로 국내에서 개발된 게터 소자와 램프용으로 널리 쓰이는 외국제품의 배기성능을 비교해 보았다.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2012년도 제43회 하계 정기 학술대회 초록집
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• pp.261-261
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• 2012

This paper presents the understandings carried out for the installation of the hydrogen reservoir of the multi-gap pseudospark switch under developing for the accelerator applications. As a cold cold cathode switch, the pseudospark switch could replace the thyratron switch which has hot cathode and being used well currently in the high power field such as laser and accelerator applications. Especially in the klystron modulator, the key component is a switch which mostly defines the jitter and the instability of the modulator system. To get the less jitter and the instability, we need to find proper range of the pressure for the gas discharge inside gas switch. This could be achieved by the understanding of the characteristic of the nonevaporable getter (NEG) which is used as a hydrogen reservoir for the switch. Therefore we verified the characteristics of the NEG (St 172, Saes) and its installation in the switch. Finally we controlled the getter to find best pressure point for the pseudospark switch.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2002년도 International Meeting on Information Display
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• pp.1051-1052
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• 2002

Vacuum surroundings in Cathode Ray Tubes (CRT) are very important factor for CRT lifetime, especially cathode & getter's. A getter is a very good vacuum pump; unfortunately, it cannot absorb an inert gas and hydrocarbons. There are only argon and helium in CRT after $1^{st}$ emission test because other active gases are absorbed by getter and methane is decomposed during CRT working. It is also very important to know exactly where and when methane is decomposed during the CRT manufacturing process, because methane is known to be harmful to cathode when its amount is high, and getter can't absorb the methane.

• 한국분말재료학회지
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• 제14권1호
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• pp.63-69
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• 2007

The present study was focused on the synthesis of a zirconium-based alloyed nanopowder by the plasma arc discharge process. The chemical composition, phase structure, particle size and hydrogen sorption property of the synthesized powders under various synthesis conditions were analyzed using XRF, XRD, SEM, XPS and the ASTM-F798 method. The chemical composition of the synthesized Zr-V-Fe-based powders approached that of the raw material with an increasing hydrogen fraction in the powder synthesis atmosphere. The synthesized $Zr_{55}V_{29}Fe_{16}$ powder consist of a mixed phase structure of the $Zr,\;ZrH_2,\;FeV\;and\;Zr(V_{1-x}Fe_{x})_2$ phases. This powder has an average particle size of about 20 nm. The synthesized $Zr_{55}V_{29}Fe_{16}$ nanopowder showed getter characteristics, even though it had a lower hydrogen sorption speed than the $Zr_{57}\;V{36}\;Fe_7$ getter powder. However, the synthesized Zr nanopowder with an average particle size of 20 nm showed higher hydrogen sorption speed than the $Zr_{57}\;V{36}\;Fe_7$ getter powder.

• 한국수소및신에너지학회논문집
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• 제16권3호
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• pp.290-295
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• 2005

For the application of fuel cell, the content and concentration of impurities in hydrogen stream must be classified. The purpose of this study is to provide analysis tool for the determination of impurities in hydrogen with ultra high purity. To produce UHT hydrogen, we purified hydrogen gas by both getter-based catridge and liquid-nitrogen soaked catridge. We compare two methods and propose new method to know about what is in hydrogen stream.

• 한국진공학회지
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• 제14권1호
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• pp.1-6
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• 2005

비증발형 게터용 금속이나 합금의 표면은 대기중에서 얇은 산화층등으로 덮여있다. 이들이 제품 내에서 게터역할을 하기 위해서는 진공이나 불활성 분위 내에서 가열하여 표면 산화층을 제거하는 활성화공정이 필요하며 활성화온도는 장착 제품을 결정하는 중요한 인자가 된다. 게터의 기본적인 특성은 활성화 및 각종가스에 대한 흡수능으로 대별할 수 있다. 이중 게터의 흡수능에 대해서는 ASTM등에서 규정하고 있으나 활성화온도에 대해서는 아직 표준적인 방법이 제시되어 있지 못하다. 본 연구에서는 온도에 따른 도달압력 측정에 의해 게터의 활성화온도를 결정하는 비교적 간단한 방법을 제시하였다. 본 방법으로 측정한 TiZrV 합금의 활성화온도가 100℃～200℃ 범위에 있다.

• 한국방사성폐기물학회:학술대회논문집
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• 한국방사성폐기물학회 2003년도 가을 학술논문집
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• pp.117-123
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• 2003

지난 논문에 이어서 삼중수소 취급시설의 일부인 삼중수소 주입계통과 재생계통을 소개하였다. 두 계통은 모두 삼중수소의 유출이 가능한 계통들로서 GB안에 설치되어야 하는 계통들이다. 삼중수소 주입계통은 삼중수소 취급시설을 사용하여 목적하는 제품을 생산하게 되는 주 계통으로서 삼중수소의 관리를 위하여 정확히 삼중수소의 주입/분배량을 계량할 수 있어야 하고, 주입 후 계통내 잔여 삼중수소를 최대한 회수할 수 있도록 하여 방사성 물질의 환경방출을 최소화 할 뿐만 아니라 귀한 자원의 손실을 최소화하도록 설계되었다. MS, Ni catalyst bed, metal getter 등 재생이 필요한 TRS 내부의 장치들은 별도의 재생계통을 사용하여 재생한다. 다른 장치들의 재생은 장치를 가열하면서 적절한 purge gas를 흘려주는 비교적 간단한 방법으로 재생이 가능하나 삼중수소를 흡착한 metal getter의 삼중수소를 회수해야 하기 때문에 복잡한 공정을 거쳐야 한다.