A method for preparing platinum-niobium composite anode material by explosive welding and rolling

Abstract

The invention provides a method for preparing a platinum-niobium composite anode material in an explosive welding plus rolling mode. A platinum composite plate is bonded to the lower end of a red copper plate impact body through adhesive. A niobium base plate is horizontally placed on a foundation. The upper end of the base plate is provided with the composite plate through a plurality of supports. The supports are the same in height, and the height is controlled to range 3 mm to 10 mm. The upper end of the impact body is provided with an explosive frame. Explosive is evenly distributed in the explosive frame, and the consumption of the explosive is controlled to range from 1.6 g / cm<2> to 3.5 g / cm<2>. A platinum-niobium composite blank is prepared by detonating the explosive through a detonator, and the platinum-niobium composite anode material of the finished product level is rolled through a roller. By means of the method, a platinum metal layer and a niobium metal layer are combined in a metallurgy layer shape, the combination strength is improved, the prepared platinum-niobium composite anode material can be directly used as a composite anode for impressed current cathodic protection of a ship, reliability is improved, and the service life is prolonged.

Description

technical field [0001] The invention belongs to the technical field of metal composite materials, and in particular relates to a method for preparing platinum-niobium composite anode materials by explosive welding and rolling. Background technique [0002] Platinum-niobium composite anode materials can be obtained by electroplating and spraying, but serious "deplatinization" phenomenon occurs due to insufficient bonding strength. [0003] Platinum-niobium composite anode materials can also be obtained by electron beam welding, but the purity of platinum is reduced due to the dilution of the weld pool metal, which seriously affects the performance and service life of platinum-niobium composite anode materials. [0004] Metallurgically bonded platinum-niobium composite anode materials can be obtained by explosive welding. The clad metal collides with the base metal at a high speed and obliquely under the explosive load of the explosive, and forms a layer of molten metal at the...

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Problems solved by technology

[0002] Platinum-niobium composite anode materials can be obtained by electroplating and spraying, but serious "deplatinization" phenomenon occurs due to insufficient bonding strength

[0003] Platinum-niobium composite anode materials can also be obtained by electron beam welding, but the purity of platinum is reduced due to the dilution of the weld pool metal, which seriously affects the performance and service life of platinum-niobium composite anode materials

[0004] Metallurgically bonded platinum-niobium composite anode materials can be obtained by explosive welding. The clad metal collides with the base metal at a high speed and obliquely under the explosive load of the explosive, and forms a layer of molten metal at the collision point, and then rapidly cools and instantly strengthens the connection. The platinum-niobium composite anode material is only a blank, and cannot be directly used as a composite anode for impressed current cathodic protection of ships

[0005] If the platinum-niobium composite blank obtained by explosive welding can be rolled to obtain a finished grade platinum-niobium composite anode material, the rolling will further expand the thickness combination and bonding area range of the platinum metal layer and the niobium metal layer, But the problem is: the method of preparing platinum-niobium composite anode materials by explosive welding and rolling has not yet been reported.

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