Abstract:
The present invention relates to a vanadium-based hydrogen permeation alloy used for a separator membrane, a method for manufacturing the alloy, and a method for using the separator membrane using the same. The vanadium-based hydrogen permeation alloy used for the separator membrane includes nickel (Ni) more than 0 and less than and equal to 5 at%, 5 to 15 at% of iron (Fe), yttrium (Y) more than 0 and less than and equal to 1 at%, and the rest of vanadium and impurities.
Abstract:
PURPOSE: Oxidation resistant ferritic stainless steel, a method of manufacturing the same, and a fuel cell connector using the same are provided to obtain a fuel cell with superior cell performance and reduced Cr volatility by using the ferritic stainless steel, which includes Cu with superior conductivity, as the fuel cell connector. CONSTITUTION: Oxidation resistant ferritic stainless steel comprises a base material of ferrite stainless steel including Fe, Cr, Mn, and Cu element and an oxide of spinel structure including at least one among Cu, Mn, and Cr. The content of the Cu in the ferritic stainless steel is 1.5-7.5 wt%. The ferritic stainless steel further includes Al, Ti, C, and N.
Abstract:
본 발명은 질화티타늄 분말의 제조 방법에 관한 것이다. 질화티타늄 분말을제조하기 위하여 우선 염화티타늄 분말 및 질화리튬 분말을 혼합하여 혼합 분말을 제조한다. 이어서 혼합 분말과 복수의 볼을 반응 용기에 투입한다. 그 후 반응 용기에 불활성 가스를 충전하고 반응 용기를 밀폐한다. 그리고 혼합 분말을 고에너지 볼밀링하여 질화티타늄 및 염화리튬을 포함하는 복합 분말을 제조한다. 이어서 복합 분말을 물에 용해 및 여과한다. 그 후 여과된 복합 분말을 건조하여 질화티타늄 분말을 회수한다. 질화티타늄, 나노, 고에너지 볼밀링
Abstract:
PURPOSE: Ferritic resisting steel and a manufacturing method thereof are provided to increase driving efficiency of a power plant, and to improve creep strength to the constant level. CONSTITUTION: A manufacturing method of ferritic resisting steel comprises the following steps of: preparing pre-processed steel(S10); performing an austenizing process of the pre-processed steel at a temperature of 1050°C ~ 1150°C(S20); and performing a tempering process of the pre-processed steel at the temperature of 650°C ~ 780°C(S30). The -processed steel includes chrome of 8 ~ 12 wt%, cobalt of 1 ~ 5 wt%, nitrogen of 0.02 ~ 0.1 wt%, vanadium of 0.1 ~ 0.3 wt%, niobium of 0.03 ~ 0.1 wt% and carbon etc.
Abstract:
An amorphous hydrogen permeation alloy for membranes having excellent hydrogen permeability and stable structure and a manufacturing method thereof are provided. The amorphous hydrogen permeation alloy for membranes comprises: one or more first metals selected from a group containing nickel, cobalt, and iron; one or more second metals selected from a group containing niobium, tantalum, and vanadium; and one or more third metals including zirconium. The amount of the third metal can be 25at% or less. [Reference numerals] (S10) Provide a mixture by mutually mixing a first metal, a second metal, and a third metal;(S20) Provide an alloy by vacuum-dissolve the mixture;(S30) Provide a thin film by melting and spinning the alloy
Abstract:
본 발명은 표면 변형층을 통한 스피넬 산화물층의 형성을 촉진함으로서, 크롬의 휘발을 억제하고, 전기 전도도 및 내산화성을 향상시킨 연료전지 금속접속자 및 그 제조방법에 관한 것이다. 본 발명은 연료전지 금속 접속자용 페라이트계 강재의 표면에 Cr 2 MnO 4 스피넬 산화물층의 형성을 촉진시키는 표면 변형층을 포함하는 전기 전도도 및 내산화성이 우수한 연료전지 금속접속자 및 그 제조방법을 제공한다. 연료전지(Fuel Cell), 접속자(interconnector), 전기 전도도(Electrical Conductivity)
Abstract:
PURPOSE: A hydrogen storage material and a method for manufacturing the same are provided to increase the speed of storing hydrogen while reducing the temperature of emitting hydrogen. CONSTITUTION: A hydrogen storage material includes a lithium boron hydride, a calcium hydride, and a niobium fluoride. The amount of the niobium fluoride is 5wt%-30wt%. The molar ratio of the lithium boron hydride to the calcium hydride is 4-8. If the hydrogen storage material emits hydrogen, the lithium boron hydride and the calcium hydride are reacted with each other to be changed into a lithium hydride(LiH) and calcium boride.