Abstract:
PROBLEM TO BE SOLVED: To provide films provided with surfaces to which at least one fluid control selected from the control in the flow of fluid, the control in the coating distribution of fluid, the control in the coating weight of fluid or the like can be easily performed, and can be formed on articles to which the same fluid control is required or desirable, to provide a method for forming the films, and to provide articles to which desired fluid control can be performed by being coated with the films. SOLUTION: The carbon films (F1, F2) whose wettability is controlled have surfaces including at least two or more kinds of face regions (f11 to f16, f21 to f25) with different wettability. The articles (a planar body P, a sliding component SL) are coated with the carbon films. The method for forming the carbon films whose wettability is controlled comprises: a stage where articles to be film-formed are formed are prepared; and a stage where at least two kinds of carbon film parts with different wettability are formed on at least a part of the articles, thus the surfaces including at least two kinds of face regions with different wettability are formed. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To obtain an ink jet recording head which exhibits a high water repellency, a high abrasion resistance, a high adhesiveness and a high resistance to ink. SOLUTION: The content of fluorine in fluorinated diamond-like carbon films 25, 27 and 29 formed on a diamond-like carbon film 23 is gradually increased in this order. Consequently, since the content of fluorine is low on the diamond-like carbon film 23 side, adhesion to the diamond-like carbon film 23 is facilitated. On the other hand, since the fluorine content of the fluorinated diamond-like carbon film 29 is high in the surface, water repellency can be maintained even if fluorine contained in it falls off more or less. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a tool clad with a film of amorphous carbon excellent in wear resistance and deposition resistance, and to provide its manufacturing method. SOLUTION: This tool clad with the amorphous carbon is provided with a base material made of WC base cemented carbide and the film of the amorphous carbon used to clad at least a cutting edge on this base material. The base material is made to have cobalt content of 12 by mass %. The maximum thickness of the film of the amorphous carbon at the cutting edge is made to be not less than 0.05 μm and not more than 0.5 μm. This film of the amorphous carbon is formed by physical vapor deposition in which graphite is made as a raw material under the atmosphere not including hydrogen practically. It is optimum to be applied to a rotationally cutting tool such as a drill, an end mill and a reamer, a cutting tip capable of changing the cutting edge used for a milling tool and a turning tool, and a cut-off tool such as a cutter, a knife and a slitter or the like.