Method for preparing micro-arc oxidation film of aluminum titanium composite plate

Abstract

The invention discloses a method for preparing a micro-arc oxidation film of an aluminum titanium composite plate. According to the method, titanium serving as a base plate and aluminum serving as a composite plate are subjected to explosive welding to form the aluminum titanium composite plate, an aluminum titanium composite plate sample is polished step by step through abrasive paper until the surface is smooth, and the aluminum titanium composite plate sample is subjected to ultrasonic washing in ethyl alcohol or acetone and dried in air at the room temperature; the aluminum titanium composite plate sample is immersed in electrolyte to serve as an anode, a stainless steel electrolyte tank serves as a cathode, an alternating current constant voltage mode is adopted for carrying out micro-arc oxidation treatment, after treatment is finished, a micro-arc oxidation sample is flushed with cold water, residue on the surface is removed, the micro-arc oxidation sample is dried at the room temperature, and the micro-arc oxidation film on the surface of the aluminum titanium composite plate is obtained; and the electrolyte comprises inorganic salt and aluminum oxide particles. According to the method, by adding Al2O3 particles and optimizing electrolyte, the prepared micro-arc oxidation film of the aluminum titanium composite plate can improve the problems of poor thickness of a transition area of the micro-arc oxidation film on the surface and the weld joint of the aluminum titanium composite plate, corrosion resistance and heat impact resistance.

Description

technical field [0001] The invention relates to an alloy material processing method, in particular to a method for adding Al 2 o 3 A method for preparing a micro-arc oxidation film on an aluminum-titanium composite plate from particles. Background technique [0002] The aluminum / titanium composite plate prepared by explosive welding technology has both the high specific strength and low specific gravity of aluminum alloy and the excellent corrosion resistance and mechanical properties of titanium alloy. It has broad application prospects in pipeline systems, aerospace and other fields. For example, Chinese Patent Application No. 201611176536.4 discloses a layered high-strength lightweight titanium-aluminum composite plate and its preparation method. Since the combination of heterogeneous metals is prone to galvanic corrosion, etc., which greatly limits its further application, surface treatment is a necessary process before it enters application. [0003] Micro-arc oxidat...

AI Technical Summary

Problems solved by technology

This method by adding Al 2 o 3 The micro-arc oxidation film of aluminum-titanium composite plate prepared by particles can improve the problems of the transition zone thickness difference, corrosion resistance and thermal shock resistance of the micro-arc oxidation film on the surface of aluminum-titanium composite plate and weld seam

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