摘要:
A manufacturing method of minute metallic spheres of the present invention comprises a heating means for heating and melting a metal to form a metallic sphere, a measurement means for measuring the injected molten metal into a predetermined volume, and a cooling means for cooling the molten metal discharged from the measurement means, to a temperature less than the melting point. The measurement means has a gauger of a predetermined volume in which the molten metal is injected, and is constructed such that the molten metal is cut by rubbing by the predetermined volume by sliding this gauger in contact. The molten metal is injected in the gauger of the predetermined volume to measure, and the measured molten metal is discharged from the gauger to cool to a temperature less than the melting point, and solidified into a sphere in the cooling process.
摘要:
A manufacturing method of minute metallic spheres of the present invention comprises a heating means for heating and melting a metal to form a metallic sphere, a measurement means for measuring the injected molten metal into a predetermined volume, and a cooling means for cooling the molten metal discharged from the measurement means, to a temperature less than the melting point. The measurement means has a gauger of a predetermined volume in which the molten metal is injected, and is constructed such that the molten metal is cut by rubbing by the predetermined volume by sliding this gauger in contact. The molten metal is injected in the gauger of the predetermined volume to measure, and the measured molten metal is discharged from the gauger to cool to a temperature less than the melting point, and solidified into a sphere in the cooling process.
摘要:
An optical element is formed by vacuum-sintering a molded body of ceramic particles having an average particle diameter of 1 μm or more and 10 μm or less and including LnxAlyO[x+y]×1.5 (Ln represents a rare-earth element, 1≦x≦10, and 1≦y≦5). Ln preferably includes at least one kind selected from La, Gd, Yb, and Lu. The optical element preferably has a refractive index of 1.85 or more and 2.06 or less, and an Abbe number of 48 or more and 65 or less. The obtained optical element has optical properties of high refractive index and low dispersibility.
摘要:
A method for producing two-phase steel sheets having a material quality equal to or better than the conventional two-phase steel sheets by an addition of a very small amount of B so as to considerably reduce the contents of steel constituents, such as Mn and Si, thus eliminating the problems concerning the production cost, descaling in the processing and material quality in the ultimate applications.
摘要:
An optical element comprising a vacuum-sintered body comprising a plurality of particles each having a two-layer structure comprising a ceramic particle and a coating layer, wherein the ceramic particle comprises LnxAlyO[x+y]×1.5, where Ln represents a rare-earth element, x represents 1≦x≦10, and y represents 1≦y≦5, and has an average particle diameter of 1 μm or more and 10 μm or less, and wherein the coating layer comprises a ceramic having a lower sintering temperature than a sintering temperature of the ceramic particle.
摘要:
An optical element is formed by vacuum-sintering a molded body of ceramic particles having an average particle diameter of 1 μm or more and 10 μm or less and including LnxAlyO[x+y]×1.5 (Ln represents a rare-earth element, 1≦x≦10, and 1≦y≦5). Ln preferably includes at least one kind selected from La, Gd, Yb, and Lu. The optical element preferably has a refractive index of 1.85 or more and 2.06 μm or less, and an Abbe number of 48 or more and 65 or less. The obtained optical element has optical properties of high refractive index and low dispersibility.
摘要:
An optical glass having a remarkably high refractive index and excellent stability can be give without being based on PbO, and the optical glass contains, as essential components, at least one oxide selected from La2O3, Gd2O3, Y2O3, Yb2O3, TiO2, Nb2O5 or WO3, at least one oxide selected from MgO, CaO, SrO or BaO and B2O3 and optionally containing SiO2, wherein on the basis of mass, the total content of B2O3 and SiO2 is from 1 to 25%, the ratio of (B2O3+SiO2)/(La2O3+Gd2O3+Y2O3+Yb2O3+TiO2+Nb2O5+WO3) is from 0.05 to 0.3 and the ratio of (MgO+CaO+SrO+BaO)/(La2O3+Gd2O3+Y2O3+Yb2O3+TiO2+Nb2O5+WO3) is from 0.1 to 0.4, the optical glass having a refractive index (nd) of 2.000 or more and an Abbe's number (vd) of 27 or less.
摘要翻译:可以在不基于PbO的情况下得到具有显着高折射率和极好稳定性的光学玻璃,并且光学玻璃含有选自La 2 O 3的至少一种氧化物作为必要成分, 3,Y 2,O 3,Y 2,O 3,Y 2, 3,3,3,3,3,3,3,3,3, >,选自MgO,CaO,SrO或BaO和B 2 O 3 3中的至少一种氧化物,并且任选地含有SiO 2,其中在 质量基准,B 2 O 3 3和SiO 2 2的总含量为1至25%,(B 2 sub> 3 sub> 3 + SiO 2)/(La 2 O 3 + Gd 2 u> 3 u> 3 + Y 2 O 3 3 + Yb 2 O 3< 3> / 2 + 2 + 2 + N 2 + 5 + 3 + 3 3)为0.05〜0.3,并且 (MgO + CaO + SrO + BaO)/(La 2 O 3 3 + Gd 2 O 3)3的比例 + Y 2 O 3 u> SUB + + Yb 2 O 3 + 2 + 2 + N 2 O 2 5 N 2 O 3 + + WO 3 3)为0.1〜0.4,光学玻璃的折射率(nd)为2.000以上,阿贝数(vd)为27以下。
摘要:
The Cr-series stainless steel sheet heretofore produced by a method including annealing a hot-rolled strip for decomposing the .alpha.'-phase or .gamma.-transformed phase therein, can be produced by omitting this annealing. In the method according to the present invention, a thin casting is cooled from the solidification temperature to the end temperature of the .gamma.-phase-precipitation at a cooling speed at least equal to the air cooling-speed, thereby avoiding the .gamma.-phase-precipitation. Then, the precipitation treatment for precipitating the supersaturated C, N, and S, or the heating to the .alpha.+.gamma. dual phase-temperature region for precipitating the .gamma.-phase, is carried out.
摘要:
A process for producing a low yield ratio, high strength two-phase steel sheet comprising hot rolling a steel composition containing 0.03 to 0.13% C, 0.8 to 1.7% Mn, not more than 0.1% Al, not more than 2.0% Si and not more than 0.5% Cr with a finishing temperature ranging from 750.degree. C. to 890.degree. C., rapidly cooling the strip to a temperature not higher than 230.degree. C., and coiling the strip at a temperature not higher than 230.degree. C. with the temperature variation during the period between the start and end of the coiling being no more than 100 degrees C. The Si content is limited to 1% or less for applications where paintability is of primary importance, and is limited to a range of from 1 to 2% for applications where the ductility is of primary importance. The process effects improvements in the artificial ageing property after working which improvement is uniform throughout the whole length of a coiled strip. The product obtained by the process is also described.
摘要:
Provided is an optical element, which is formed by vacuum-sintering a molded body of ceramic particles having an average particle diameter of 1 μm or more and 10 μm or less and including LnxAlyO|x+y|×1.5 (Ln represents a rare-earth element, x represents 1≦x≦10, and y represents 1≦y≦5). Ln preferably includes at least one kind selected from La, Gd, Yb, and Lu. The optical element preferably has a refractive index of 1.85 or more and 2.06 μm or less, and an Abbe number of 48 or more and 65 or less. The optical element having optical properties of high refractive index and low dispersibility is obtained.
摘要翻译:提供一种光学元件,其通过真空烧结平均粒径为1μm以上且10μm以下的陶瓷粒子的成型体而形成的光学元件,其包含LnxAlyO | x + y |×1.5(Ln表示稀土元素, x元素,x表示1≦̸ x≦̸ 10,y表示1≦̸ y≦̸ 5)。 Ln优选包括选自La,Gd,Yb和Lu中的至少一种。 光学元件的折射率优选为1.85以上且2.06μm以下,阿贝数为48以上且65以下。 获得具有高折射率和低分散性的光学性质的光学元件。