780results about How to "Good corrosion resistance" patented technology

The invention discloses a metal bipolar plate high-electric-conductivity and corrosion-resistance protective coating layer and a preparation method and application thereof. The preparation method of the metal bipolar plate high-electric-conductivity and corrosion-resistance protective coating layer comprises the following steps: with a chromium target as the target, a high-power pulse magnetron sputtering technology is adopted to deposit a chromium transition layer on the surface of a metal bipolar plate; with a graphite target as the target, a direct-current magnetron sputtering technology isadopted to deposit an amorphous carbon layer on the surface of the chromium transition layer to obtain the metal bipolar plate high-electric-conductivity and corrosion-resistance protective coating layer; and process conditions adopted by the direct-current magnetron sputtering technology comprises the sputtering source center magnetic field intensity of 40-60 mT, the edge magnetic field intensity of 10-20 mT and the power of 0.8-1.0 kW. The provided chromium transition layer is smooth in surface and compact in internal structure, and can effectively improve the film base bonding strength; and meanwhile, through optimization of an amorphous carbon layer preparation process, the amorphous carbon layer achieves excellent electric conductivity and corrosion resistance, and can permanently and effectively protect the metal bipolar plate.

The invention relates to an anti-corrosive pre-stressed concrete pipe pile foundation, which is characterized in that the cementing material adopted by the concrete for preparing the pipe pile body is a granular micro-powder material with different varieties and fineness; and a cascaded matching method is adopted for matching. The anti-corrosive pre-stressed concrete pipe pile foundation has the obvious advantages of (1) needing not to change the production process of the pipe pile or increase the manufacture equipment, obviously improving the impermeability and sulfate resistance of the concrete, and leading the anti-corrosive effect to be better and more durable; and (2) utilizing the waste slag raw material and being cheaper than the method of coating and the method of permeation and rust retardant agent.

The invention discloses an anticorrosive anchor rod capable of preventing slurry from leaking. The anchor rod comprises a rod body, wherein the rod body is sleeved with a sleeve bag; one end of the rod body is extended out of a sleeve bag opening, and an area section of the rod body, which is inserted into a drill hole, is packaged by the sleeve bag; and a sleeve pipe is sleeved on the sleeve bag and is positioned on one side of the sleeve bag close to the sleeve bag opening. The slurry is compactly injected into the sleeve bag on an anchoring section, so that the filling compaction requirement of the anchoring section of the anchor rod can be met, all-around overflow of cement slurry on the anchoring section under the action of slurry injection pressure is prevented, and the control over slurry injection project amount and the economization of construction cost are facilitated; a free section of the anchor rod is protected by a corrugated sleeve, so that the free section can pass through an orifice to crush a rock-soil area, the reduction in severe slurry leakage risks of the anchor rod in a rock-soil crushing area is facilitated while the thickness of a steel bar concrete slurry protective layer is ensured, and the economization of the construction cost is facilitated; and simultaneously, the free section is subjected to secondary slurry injection, so that the free section of the anchor rod can be provided with a plurality of anticorrosive structural layers, and the anchor rod is high in corrosion resistance.

The invention discloses a hard resin lens and organic glass lens surface ultra-hard coat coating method, which comprises the following steps that: an amorphous tetrahedral carbon film is formed on the surface of the lens through pretreatment, glow discharge cleaning, electric arc discharge and carbon ion precipitation, the film has good light transmission and good corrosion resistance, the abrasion resistance of the coated lens is remarkably improved compared with that of the non-coated lens, the coherence force between the amorphous tetrahedral carbon film and the resin and organic glass substrate is strong, the film is difficult to drop of, and the ultraviolet light test indicates that the ultraviolet transmission rate can be effectively reduced by the coat; and the hardness of the coated lens which is prepared with the method can reach more than 85 GPa, the SP3 key structure content in the coat is more than or equal to 85 percent, the friction coefficient is small, the abrasion resistant time is long, and the abrasion resistance is greatly improved.