摘要:
An amorphous carbon film includes carbon as a major component, and silicon in an amount of from 0.1 atomic % or more to 10 atomic % or less when the entire amorphous carbon film is taken as 100 atomic %. The carbon is composed of carbon having an sp 2 hybrid orbital in an amount of from 60 atomic % or more to 90 atomic % or less when the entire carbon amount is taken as 100 atomic %. Also disclosed is a process for producing the amorphous carbon film.
摘要:
A sliding member having a chromium nitride film formed thereon, for improving sliding characteristics by specifying the compound form of chromium nitride and its orientation. A sliding member having a chromium nitride film formed on a sliding surface of a substrate, characterized in that chromium nitride has a Cr2N structure and the sliding surface is substantially parallel to a (002) plane of Cr2N.
摘要:
A part having a high adhesion of a substrate to a film of coating, which has a smooth surface, is provided. A coated part comprising a substrate and a film with which the surface of the substrate is coated. The surface of the substrate coated with the film is characterized in that the surface of the substrate includes an uneven surface having projections of 10-100 nm in average height and not more than 300 nm in average width. The uneven surface can be formed by an ion impact process. Since the projections on the surface are very minute, the surface coated with the film and formed on the uneven surface becomes smooth.
摘要:
In an activated sludge treatment of organic waste water, excess sludge from the activated sludge aeration vessel is processed with hypochlorous acid in place of ozone without set up of aeration vessels and blowers to improve volume reduction cost of sludge without deterioration of water quality. The hypochlorous acid process is carried out by using an acidulous sodium hypochlorite aqueous solution which is prepared by mixing sodium hypochlorite aqueous solution with a dilute hydrochloric acid and diluting the resulting mixture with water within 1,000ppm to 50,000ppm of available chlorine concentration at a pH zone of more than 4 to less than 7.
摘要:
This aims to provide a wear-resistant copper-based alloy, which is advantages in not only enhancing wear resistance in a high temperature range but also enhancing crack resistance and machinability and which is especially suitable for forming a cladding layer. The wear-resistant copper-based alloy comprises, by weight, 4.7 to 22.0% nickel, 0.5 to 5.0% silicon, 2.7 to 22.0% iron, 1.0 to 15.0% chromium, 0.01 to 2.00% cobalt, 2.7 to 22.0% one or more of tantalum, titanium, zirconium and hafnium, and the balance of copper with inevitable impurities.