Abstract:
분리막용 바나듐계 수소투과합금, 그 제조 방법 및 이를 이용한 분리막의 사용 방법을 제공한다. 분리막용 바나듐계 수소투과합금은, 0 보다 크고 5at% 이하의 니켈(Ni), 5at% 내지 15at%의 철(Fe), 0 보다 크고 1at% 이하의 이트륨(Y) 및 나머지 바나듐 및 불순물을 포함한다.
Abstract:
Cr을 함유한 페라이트계 스테인리스강으로서 상기 강의 표면에서 후방 산란 전자 회절법(EBSP)에 의해 측정된 {110} 결정방위의 분율이 5% 이상인 페라이트계 스테인리스강; 및 상기 페라이트계 스테인리스강의 표면에 형성된 크롬 산화물막을 포함하는 내산화성 페라이트계 스테인리스강이 제공된다.
Abstract:
PURPOSE: A copper-containing austenite stainless steel plate and a method for manufacturing the same are provided to obtain superior gain corrosion resistance through short-time annealing at low temperatures. CONSTITUTION: A method for manufacturing a copper-containing austenite stainless steel plate comprises the steps of: preparing a stainless steel plate containing copper of 1wt%-5wt%(S10), cold rolling the stainless steel plate(S20), annealing the stainless steel plate(S30), and repeating the cold rolling and annealing steps while gradually raising the annealing temperature(S40). In the initial cold rolling, the reduction ratio of the stainless steel plate is 3%-15%. The reduction ratio of the stainless steel plate after final rolling is 70%-90%.
Abstract:
본 발명은 펄라이트 콜로니의 크기를 측정하기 위해서 전자후방산란회절(EBSD) 및 입계연결 개념을 이용한 측정방법에 관한 것으로서, 전자후방산란회절(EBSD)을 이용하여 펄라이트상을 갖는 강재의 결정방위를 측정하는 단계; 상기 측정된 결정방위를 이용하여 결정방위 사이의 방위차를 계산하여 방위차 맵(또는 패턴질 맵, pattern quality map)을 작성하는 단계; 상기 방위차를 이용하여 콜로니 구분 기준값(θ st )과 입계완성 기준값(θ gb )을 설정하는 단계; 및 상기 설정된 콜로니 구분 기준값 및 입계완성 기준값과 상기 방위차를 비교하여 펄라이트 콜로니 입계(boundary)를 결정하는 단계를 포함한다. 펄라이트 콜로니(pearlite colony), 전자후방산란회절(electron back scattered diffraction), 입계연결(boundary completion)
Abstract:
PURPOSE: A hydrogen storage material and a producing method thereof are provided to prevent the reduction of the hydrogen storage capacity by adding a catalyst. CONSTITUTION: A hydrogen storage material contains lithium boron hydride and yttrium hydride. The yttrium hydride is selected from either yttrium dihydride or yttrium trihydride. The molar ratio of the lithium boron hydride for the yttrium hydride is 2~8. The lithium boron hydride and the yttrium hydride inter-react with each other when discharging hydrogen from the storage material, and changes into lithium hydride and yttrium boride.
Abstract:
PURPOSE: A fuel cell interconnector and a method for manufacturing the same are provided to improve the performance of a fuel cell by forming a chromium manganese oxide-based spinel oxide layer on ferrite-based steel. CONSTITUTION: A method for manufacturing a fuel cell interconnector includes the following: Ferrite-based steel for a fuel cell interconnector is prepared. A surface deformed layer is formed on the surface of the ferrite-based steel. A Cr_2MnO_4-based spinel oxide layer is formed on the surface deformed layer by implementing a thermal treatment process at the driving temperature of a solid oxide-based fuel cell.
Abstract:
Tungsten composite powder which can be used for parts of a fusion reactor facing plasma due to the excellent corrosion resistance and high temperature strength, a coating material made of the same and a method of manufacturing the tungsten composite powder are provided. A manufacturing method of tungsten composite powder comprises a step for providing a mixture in which W(tungsten) particles and SiC(silicon carbide) particles having a diameter of 0.1~30mum to be formed into W1-xSiCx composition by the weight ratio(S10), a step for providing composite powder by spraying and drying the mixture(S20), and a step for heat-treating the composite powder(S30).