Abstract:
본 발명은 용선을 활용한 고탄소 철계 비정질 합금 및 그 제조방법 에 관한 것이다. 본 발명은 일반식 Fe α C β Si γ B x P y Cr z 로 표현되고, 상기 α, β, γ, x, y 및 z는 각각 철(Fe), 탄소(C), 실리콘(Si), 보론(B), 인(P) 및 크롬(Cr)의 원자%이며, 상기 α는 α=100-(β+γ+x+y+z)원자%, 상기 β는 13.5원자%≤β≤17.8원자%, 상기 γ는 0.30원자%≤γ≤1.50원자%, 상기 x는 0.1원자%≤x≤4.0원자%, 상기 y는 0.8원자%≤y≤7.7원자%, 그리고 상기 z는 0.1원자%≤z≤3.0원자%인 고탄소 철계 비정질 합금을 제공한다.
Abstract translation:本发明涉及一种利用木炭的高碳铁基非晶合金及其制造方法。 通式的本发明的Fe <子>α子> C <子>β子>的Si <子>γ子>乙<子> X 子> P <子>ý子> X,y和z表示为Fe,C,Si,硼,P,Cr,Z, )其中α为100%,β+ 13.8原子%,β为17.8原子%,γ为0.30原子%的铬(Cr)原子% X是0.1原子%≤X≤4.0原子%,y是至少0.8原子%,ΔY≤7.7原子%,z是至少0.1原子%≤Zn≤3.0原子% 铁基非晶合金。 P>
Abstract:
Provided is an apparatus for preventing leakage of molten metal from ladle. The apparatus for preventing leakage of molten metal from ladle, according to an embodiment of the invention, prevents leakage of molten metal from ladle transferring the molten metal and comprises a supporting unit which can be fixed on the supporting stand located on a bottom surface; a supporting bar which is movably installed in the supporting unit in a transverse direction; a sealing unit which is installed at one end side of the supporting bar to be located below the ladle; and a heavy weight body which is installed at other end side of the supporting bar.
Abstract:
본 발명은 나노 분말의 제조 방법 및 장치에 관한 것이다. 본 발명은, 원료 분말을 플라즈마 챔버에 공급하는 분말 공급 단계, 플라즈마를 이용하여 원료 분말을 연소시키는 연소 단계, 및 연소된 원료 분말을 급냉시켜 나노 분말을 생성하는 나노 분말 생성 단계를 포함하는 것을 특징으로 하는 나노 분말의 제조 방법 및 장치를 제공한다. 본 발명에 의하는 경우, 고주파 플라즈마를 이용하여 원료 분말을 연소시킴으로써 나노 분말을 제조하여 공정을 단순화하는 한편 대량 생산을 가능하게 하는 효과가 있다. 나노 분말, 플라즈마, CeO2
Abstract:
PURPOSE: A molybdenum metal nanopowder manufacturing method using RF plasma is provided to reduce molybdenum trioxide by activating RF plasma in a hydrogen reduction atmosphere and condense the reduced molybdenum trioxide using high-temperature plasma, thereby obtaining molybdenum metal nanopowder. CONSTITUTION: A molybdenum metal nanopowder manufacturing method using RF plasma comprises the steps of: charging molybdenum trioxide powder into a reaction chamber, supplying hydrogen gas into the reaction chamber to substitute the inside of the reaction chamber with a hydrogen atmosphere, generating RF plasma in the reaction chamber, producing molybdenum metal powder through hydrogen reduction of the molybdenum trioxide using the RF plasma, vaporizing the molybdenum metal powder through the RF plasma, and condensing or rapidly cooling the vaporized molybdenum metal powder into molybdenum metal nanopowder.
Abstract:
PURPOSE: A manufacturing method of magnesium oxide nanopowder is provided to reduce a breakdown voltage and to enhance an anti-sputtering feature by synthesizing magnesium oxide nanopowder doped with magnesium fluoride by a use of high frequency plasma. CONSTITUTION: The manufacturing method of magnesium oxide nanopowder includes following steps.(S10) The magnesium fluoride micro powder and magnesium oxide micro powder are mixed. A compound powder is manufactured.(S20) Induction plasma is created by using a high frequency plasma apparatus.(S30) 'Carrier gas containing the compound powder' is sprayed to the top of the induction plasma. The quenching gas is sprayed to the lower part of the induction plasma. The compound powder is nano-powderized through a pyrolysis and regrowth process.(S40) The nanopowder is cooled and collected. The magnesium oxide nanopowder doped with the magnesium fluoride is obtained.