摘要:
A novel MgMnZn-ferrite material is described which is particularly suitable for deflection rings which are mounted in the deflection coil of a cathode-ray tube. The material corresponds to the formula (Li 0.5 Fe 0.5 ) p Mg q Zn x Mn y Fe z O 3/2(y+z)+1 , wherein 0.03 ≦ p ≦ p 0.25 0.30 ≦ q ≦ g 0.60 0.35 ≦ x ≦ 0.50 0.03 ≦ y ≦ 0.18 1.70 ≦ z ≦ 1.90 y+z and, p+q+x = 1.00 The said material exhibits extremely low power losses and a relatively high initial permeability.
摘要:
Recording in which a recording double layer which has an absorbing dye is exposed to laser light of a higher and a lower energy level, in which by exposure to laser light of the lower energy level, a bump is formed in the recording layer and in which by exposure to laser light of the higher energy level a bulge is formed which at the surface comprises a groove, as well as a recording element obtained by using the method and a method of manufacturing a metal copy from the recording element.
摘要:
The polymers are prepared by using the new intermediate product which forms a polymeric precursor, and which is converted into the desired heterocyclic polymer by ring closure.
摘要:
A laminated product comprising substrate (7) and a thin layer (11, 12) of a dielectric compound formed from the oxide or the suboxide of gallium antimonide or indium antimonide, an optical information carrier containing such a tin layer, whereby said thin layer, dependent upon the oxygen content, may function as a recording layer 11 or as a transparent distance layer 12, as well as the suboxide of gallium antimonide or indium antimonide used in the laminated product.
摘要:
A hard magnetic material having the composition RE₂Fe 14-x Mn x C, wherein RE is at least one element selected from the group formed by Nd, Pr, Ce and La, and wherein 0.2 ≦ x ≦ 2.
摘要:
Recording in which a recording double layer which has an absorbing dye is exposed to laser light of a higher and a lower energy level, in which by exposure to laser light of the lower energy level, a bump is formed in the recording layer and in which by exposure to laser light of the higher energy level a bulge is formed which at the surface comprises a groove, as well as a recording element obtained by using the method and a method of manufacturing a metal copy from the recording element.
摘要:
A boron-free hard magnetic material on the basis of neodymium, iron and carbon which comprises a hard magnetic, finely crystalline tetragonal phase having a grain size equal to or smaller than 0.2 µm, and which has the Nd₂Fe₁₄C structure. The material can be obtained by spraying a molten alloy onto a rapidly moving chill surface, while forming flakes having a thickness of 30 µm or less. The material thus obtained is subsequently annealed at a temperature between 685 and 730°C, such that the desired structure is formed.
摘要翻译:基于钕,铁和碳的无硼硬磁材料,其包含具有等于或小于0.2μm的晶粒尺寸并具有Nd 2 Fe 14 C结构的硬磁精细晶体四方晶相。 该材料可以通过将熔融合金喷涂到快速移动的冷却表面上,同时形成厚度为30μm或更小的薄片。 然后将由此获得的材料在685和730℃之间的温度下退火,从而形成所需的结构。