Abstract:
PROBLEM TO BE SOLVED: To provide a heat sink and its method for manufacturing, in which no problem due to thermal distortion occurs even if an electronic part having different thermal expansion coefficient and a heat dissipation member are jointed, because heat generated from electronic parts such as semiconductors etc. is diffused more efficiently than before. SOLUTION: In a heatsink for semiconductor devices, the thermal expansion coefficient of the opposed faces are different, and further, the thermal expansion coefficient of one face is 4-14×10 -6 /K, and that of another face is 10-24×10 -6 /K. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an injection molding machine which is excellent in the durability of a screw, even if molding is performed by using a resin material containing a glass fiber and an antistatic material. SOLUTION: Each component of the screw is coated with a lower layer, an intermediate layer and an upper layer. The lower layer is formed as a CrN membrane. The intermediate layer on the lower layer is formed as an inclined composite membrane of CrN and TiN, wherein in terms of a ratio of mixing of CrN and TiN, a CrN content is made higher and a TiN content is made lower toward the lower layer, and the CrN content is made lower and the TiN content is made higher toward the upper layer. The upper layer on the intermediate layer is formed as a TiN membrane. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a hard film which has excellent wear resistance and oxidation resistance. SOLUTION: The hard film is provided with: a surface layer consisting of a complex compound composed of one or more kinds of metallic elements selected from the group consisting of the group 4A, 5A and 6A elements in the Periodic Table, Si and one or more kinds of elements selected from the group consisting of N, C and B, or a mixture of the complex compounds; a layer directly above a base metal surface composed of one or more kinds of metallic elements selected from the group consisting of the 4A, 5A and 6A elements in the Periodic Table, and one or more kinds of elements selected from N, C and B, or a mixture of the complex compounds; and an intermediate layer with a gradient coating or a stacked structure consisting of the complex compound or the mixture of the complex compounds composing the surface layer and the layer directly above the base metal surface. COPYRIGHT: (C)2004,JPO