99results about How to "Solve Contact Corrosion" patented technology

The invention relates to hot dip coating alloy specially used for surface coatings of titanium alloy parts. The hot dip coating alloy consists of aluminum, silicon, zinc, rare earth elements, magnesium, ferrum and reinforcing agent of particles of nano oxides, and based on the total weight of the alloy, the alloy comprises 8 to 24 percent of silicon, 1.2 to 3.1 percent of zinc, 0.02 to 0.5 percent of rare earth elements, 0.5 to 3.2 percent of magnesium, 0.05 to 1 percent of ferrum, 1 to 2 percent of reinforcing agent of particles of nano oxides, and the balance of aluminum and inevitable impurities, wherein the reinforcing agent of the particles of the nano oxides may be one or two of TiO2 and CeO2. The hot dip coating alloy produced by the method can form a coating with good corrosion resistance and wearing resistance and good metallurgical bonding property with a matrix on the surface of the titanium alloy.

The invention relates to a method for carrying out surface activating treatment on the surface of titanium alloy. The method includes the following steps: 1. oil and rust removing is first carried out on a titanium alloy base material part; 2. etching treatment is carried out on the part; 3. surface activating treatment is carried out on the part, wherein activating solution of the surface activating treatment is a mixture of glycol, acidic ammonium fluoride, nickel chloride, boric acid, lactic acid and acetic acid, the temperature of the surface activating treatment is within 40 to 60 DEG C, and the time of the surface activating treatment is within 30 to 40min; 4. drying and after-treatment procedures are carried out. Compared with the prior art, the method has the following characteristics: the activating time is short, the activating effect is good, no corrosion is incurred on the part, the risk of corrosion on the part is basically eliminated, and the environmental pollution is mild; with high stability and quick deposition, the activating solution that the method adopts can form a coating with good corrosion/wear resisting properties and good metallurgical combination with a matrix on the surface of the titanium alloy, thereby preventing contact corrosion between the titanium alloy part and aeronautical materials such as aluminum alloy, high-temperature alloy and the like.

The invention relates to hot dip coating alloy specially used for surface coatings of titanium alloy parts. The hot dip coating alloy consists of aluminum, silicon, zinc, rare earth elements, magnesium, copper, manganese and reinforcing agent of particles of nano oxides, and based on the total weight of the alloy, the alloy comprises 8 to 24 percent of silicon, 1.2 to 3.1 percent of zinc, 0.02 to 0.5 percent of rare earth elements, 0.5 to 3.2 percent of magnesium, 0.05 to 0.5 percent of copper, 1.0 to 2.0 percent of manganese, 1 to 2 percent of reinforcing agent of particles of nano oxides, and the balance of aluminum and inevitable impurities, wherein the reinforcing agent of the particles of the nano oxides may be one or two of TiO2 and CeO2. The hot dip coating alloy produced by the method can form a coating with good corrosion resistance and wearing resistance and good metallurgical bonding property with a matrix on the surface of the titanium alloy.

The invention relates to hot dip coating alloy specially used for surface coatings of titanium alloy parts. The hot dip coating alloy consists of aluminum, silicon, zinc, rare earth elements, magnesium, copper, manganese, chromium, and reinforcing agent of particles of nano oxides, and based on the total weight of the alloy, the alloy comprises 8 to 24 percent of silicon, 1.2 to 3.1 percent of zinc, 0.02 to 0.5 percent of rare earth elements, 0.5 to 3.2 percent of magnesium, 0.05 to 0.5 percent of copper, 1.0 to 2.0 percent of manganese, 0.5 to 2.0 percent of chromium, 1 to 2 percent of reinforcing agent of particles of nano oxides, and the balance of aluminum and inevitable impurities, wherein the reinforcing agent of the particles of the nano oxides may be one or two of TiO2 and CeO2. The hot dip coating alloy produced by the method can form a coating with good corrosion resistance and wearing resistance and good metallurgical bonding property with a matrix on the surface of the titanium alloy.

The invention relates to hot dip coating alloy specially used for surface coatings of titanium alloy parts. The hot dip coating alloy consists of aluminum, silicon, zinc, rare earth elements, ferrum, copper, manganese, chromium, zirconium and reinforcing agent of particles of nano oxides, and based on the total weight of the alloy, the alloy comprises 8 to 24 percent of silicon, 1.2 to 3.1 percent of zinc, 0.02 to 0.5 percent of rare earth elements, 0.05 to 1 percent of ferrum, 0.05 to 0.5 percent of copper, 1.0 to 2.0 percent of manganese, 0.5 to 2.0 percent of chromium, 0.02 to 0.5 percent of zirconium, 1 to 2 percent of reinforcing agent of particles of nano oxides, and the balance of aluminum and inevitable impurities, wherein the reinforcing agent of the particles of the nano oxides may be one or two of TiO2 and CeO2. The hot dip coating alloy produced by the method can form a coating with good corrosion resistance and wearing resistance and good metallurgical bonding property with a matrix on the surface of the titanium alloy.

The invention relates to hot dip coating alloy specially used for surface coatings of titanium alloy parts. The hot dip coating alloy consists of aluminum, silicon, zinc, rare earth elements, ferrum, chromium and reinforcing agent of particles of nano oxides, and based on the total weight of the alloy, the alloy comprises 8 to 24 percent of silicon, 1.2 to 3.1 percent of zinc, 0.02 to 0.5 percent of rare earth elements, 0.05 to 1 percent of ferrum, 0.5 to 2.0 percent of chromium, 1 to 2 percent of reinforcing agent of particles of nano oxides, and the balance of aluminum and inevitable impurities, wherein the reinforcing agent of the particles of the nano oxides may be one or two of TiO2 and CeO2. The hot dip coating alloy produced by the method can form a coating with good corrosion resistance and wearing resistance and good metallurgical bonding property with a matrix on the surface of the titanium alloy.

The invention discloses a TiAl-based alloy coating resistant to contact corrosion and a preparation method of the TiAl-based alloy coating. The coating is composed of the following elements including, by atom percentage, 44-47at% of Al, 2-4at% of Nb, 4-10at% of V, 0-2.5at% of Cr, 0-0.5at% of B and the balance Ti. According to the coating, intermediate alloy AlNb, AlV and AlCr, TiB2, Al particles and high-purity sponge Ti are mixed and then are prepared into spraying powder; and then the spraying powder is sprayed onto the surface of an aluminum alloy base through a low-temperature supersonic spraying technology. The bonding strength of the coating can reach 30 MPa or above, after the coating is prepared on the surface of an aluminum alloy, the electrode potential of the surface of the aluminum alloy can be improved, the self-corrosion current can be reduced, the contact corrosion sensitivity between the aluminum alloy and a titanium alloy can be reduced, and therefore the aluminum alloy can make direct contact with the titanium alloy for use, and the contact corrosion preventing requirement of aluminum alloy/titanium alloy dissimilar metal is met.

The invention relates to hot dip coating alloy specially used for surface coatings of titanium alloy parts. The hot dip coating alloy consists of aluminum, silicon, zinc, rare earth elements, ferrum and reinforcing agent of particles of nano oxides, and based on the total weight of the alloy, the alloy comprises 8 to 24 percent of silicon, 1.2 to 3.1 percent of zinc, 0.02 to 0.5 percent of rare earth elements, 0.05 to 1 percent of ferrum, 1 to 2 percent of reinforcing agent of particles of nano oxides, and the balance of aluminum and inevitable impurities, wherein the reinforcing agent of the particles of the nano oxides may be one or two of TiO2 and CeO2. The hot dip coating alloy produced by the method can form a coating with good corrosion resistance and wearing resistance and good metallurgical bonding property with a matrix on the surface of the titanium alloy.