TiCoxFe1-x(x=0.50~1.00)계 합금을 제조하고, 합금의 특성을 X-ray diffractometer (XRD), pressure composition temperature (PCT)곡선, scanning electron microscopy (SEM)에 의해 조사하였고, TiCoxFe1-x(x=0.50~1.00)-stainless steel (SS) 복합막에 대해 H2-N2 혼합기체분리실험을 하였다. X-선 회절분석에 의하면 TiCoxFe1-x(x=0.50~1.00)계 합금의 결정구조는 TiCo와 같은 입방정구조이었다. TiCoxFe1-x(x=0.50~1.00)계 합금은 120°C에서 hysteresis현상을 나타내었고, 합금 중 Fe의 양이 증가함에 따라 x=0.90~1.00과 0.50~0.55 범위에서는 hysteresis가 증가하였고, x=0.55~0.90 범위에서는 감소하였다. 가장 작은 hysteresis를 나타낸 합금은 TiCo0.55Fe0.45이었다. 120°C에서 TiCoxFe1-x(x=0.50~1.00)-SS 복합막의 수소투과압력의 최저값은 TiCo0.55Fe0.45에서 2.5 atm을 나타내었고, 최대값은 TiCo0.90Fe0.10에서 10 atm을 나타내었다. TiCoxFe1-x(x=0.50~.00)-SS 복합막에 의하여 120°C에서 H2-N2 혼합기체를 분리하는 경우, 가장 우수한 복합막은 고압부의 수소투과압력이 2.5 atm으로 가장 낮고, hysteresis가 가장 작은 TiCo0.55Fe0.45-SS 복합막이었다.

We have studied on the preparation of TiCoxFe1-x(x=0.50~1.00) system alloy, the characteristics of TiCoxFe1-x(x=0.50~1.00) system alloy by X-ray diffractometer (XRD), pressure composition temperature (PCT) curve, scanning electron microscopy (SEM) and the H2-N2 gas mixture separation of TiCoxFe1-x(x=0.50~1.00)- stainless steel (SS) composite membranes. The formation of TiCoxFe1-x(x=0.50~1.00) system alloys with cubic crystal same as TiCo was confirmed by X-ray diffractometer. TiCoxFe1-x(x=0.50~1.00) system alloys showed the hysteresis at 120°C. As the Fe content of TiCoxFe1-x(x=0.50~1.00) system alloys increased, the hysteresis was increased both range x=0.90~1.00 and x=0.55~0.60, and the range x=0.55~0.90 gave decreased hysteresis. TiCo0.55Fe0.45 alloy was the one showed the lowest hysteresis among them. The lowest value of hydrogen permeation pressure of TiCoxFe1-x(x=0.50~1.00)-SS composite membrane was TiCo0.55Fe0.45-SS composite membrane with the value of 2.5 atm at 120°C; otherwise, TiCo0.90Fe0.10-SS composite had the highest pressure value among the membranes with the value of 10 atm. TiCo0.55Fe0.45-SS composite membrane was the best to separate the H2-N2 gas mixture excellently among the TiCoxFe1-x(x=0.50~1.00)-SS composite membranes since TiCo0.55Fe0.45 had the least hysteresis, and hydrogen permeation pressure was the lowest with value of 2.5 atm.

1. 서 론
 2. 실 험
  2.1. TiCoxFe1-x(x=0.50~1.00)계 합금의 제조
  2.2. TiCoxFe1-x(x=0.50~1.00)계 합금막의 제조
  2.3. H2-N2 혼합기체분리 실험
 3. 결과 및 고찰
  3.1. TiCoxFe1-x(x=0.50~1.00)계 합금의 X-선 회절분석
  3.2. TiCoxFe1-x(x=0.50~1.00)계 합금의 압력⋅조성⋅등온(PCT) 곡선
  3.3. TiCoxFe1-x(x=0.50~1.00)-SS 합금막의 주사전자현미경(SEM) 관찰
  3.4. TiCoxFe1-x(x=0.50~1.00)-SS 복합막의 Fe몰수 변화에 따른 H2 투과를 위한 주입부 압력
 4. 결 론
 감 사
 Reference

• 장규영(상명대학교 화학과) | Kyu-young Jang
• 강태범(상명대학교 화학과) | Tae Beom Kang Corresponding author