Abstract:
PROBLEM TO BE SOLVED: To provide Cu-Sn-Ni based raw material powder for powder metallurgy which uniformizes the structure of a sintered compact and can obtain a green compact having high compacting property and a sintered compact having high strength as raw material powder dealing with higher strength and downsizing and more complicated shaping in sintered parts used for a Cu based bearing, sliding parts or the like.SOLUTION: The powdery mixture for powder metallurgy includes, by weight, 3 to 12% Sn, 5 to 15% Ni and 0.05 to 1.0% P, and the balance Cu with inevitable impurities.
Abstract:
PROBLEM TO BE SOLVED: To provide a high strength magnesium alloy excellent in strength, toughness and corrosion resistance each at a practicable level.SOLUTION: The high strength magnesium alloy having high corrosion resistance has a composition comprising (a) atom% of Z, b atom%, in total, of at least one element selected from the group consisting of Y, Gd, Dy, Ho, Er, Tb and Tm, c atom% of Al, and the remainder being Mg, wherein (a), b and c satisfy the following expressions (1)-(4). (1) 0.2≤a≤5.0, (2) 0.2≤b≤5.0, (3) 2a-3≤b and (4) 0.05b≤c
Abstract:
PROBLEM TO BE SOLVED: To provide a conductive composition for forming a solar cell collector electrode, which is excellent in printability and is capable of forming an electrode having a high aspect ratio, and to provide a solar cell using the conductive composition.SOLUTION: The conductive composition for forming a solar cell collector electrode contains a spherical silver powder (A) having an average particle diameter of 0.5-5.0 μm, and a flaky silver power (B) having an average thickness of 0.05-0.2 μm and an apparent density of 0.4-1.1 g/cm.
Abstract:
PROBLEM TO BE SOLVED: To provide a gold powder for UV flexo inks which exhibits excellent metallic luster as that used for UV flexo printing and has long-term storage stability even after gold ink preparation.SOLUTION: The gold powder for UV flexo inks is characterized in that 100 pts.wt. of a flake brass metal powder having an average particle size of 10-30 μm surface-treated with a fatty acid is mixed and coated with 0.2-3 pts.wt. of a silane coupling agent having an epoxy group as an organic functional group.
Abstract:
PROBLEM TO BE SOLVED: To provide a treated copper foil which provides high peeling strength with an insulating resin substrate although it has a low roughness, and after moisture absorption treatment, has the small deterioration rate of the peeling strength after immersion in an activation processing liquid and the small penetration amount after immersion in the activation processing liquid, and which is excellent in etching property.SOLUTION: In the treated copper foil 1 to be adhered to an insulating resin substrate, a roughening treatment layer, a chromate layer and a silane coupling agent layer are successively provided on the surface of an untreated copper foil 3. The treated copper foil 1 is characterized in that the ten-point average roughness Rz of the surface of the treated copper foil is 1.0-2.7 μm, and the average interval S5 between roughening particles 2 (local mountaintops) forming the roughening treatment layer is ≤0.210 (not including zero) μm, when a surface area of 177 μmof the surface of the treated copper foil 1 is measured by using a violet laser having a limit wavelength of visible light of 408 nm.