Method for enhancing pitting corrosion resistant performance of stainless steel
A technology for stainless steel and pitting corrosion, which is applied in the field of improving the pitting corrosion resistance of stainless steel, and can solve problems such as limiting practicability.
Inactive Publication Date: 2008-11-19
FUDAN UNIV
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Problems solved by technology
Adding a corrosion inhibitor to the solution can effectively improve the pitting resistance of the material, but this method has many limitations or is not applicable in applications. Improve its anti-pitting ability ([1] I.Avramova, D.Stoychev, Ts.Marinova, Applied Surface Science, 2006, 253: 1365); for example, the environment of the ship cannot be changed by adding corrosion inhibitors
The pitting resistance of the material can be effectively improved by changing the alloy composition or microstructure of the material, but this method may cause changes in other properties of the material such as mechanical properties ([2] PetchNJ, JIronSteelInst, 1953, 174: 25), and then limits its usefulness
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The invention belongs to the stainless steel surface treatment technical field, in particular relating to a method for improving the pitting corrosion resistance of stainless steels. The method comprises the following steps that: a rare earth complex film is deposited on the stainless steel surface by utilization of the electrophoretic method, and a compact and uniform rare earth oxide film is obtained on the stainless steel surface through roasting. The method can effectively improve the pitting corrosion resistance of the stainless steel materials and has important application and research value.
Description
A Method of Improving the Pitting Corrosion Resistance of Stainless Steel technical field The invention belongs to the technical field of surface treatment of stainless steel materials, and in particular relates to a method for improving the pitting resistance of stainless steel. Background technique Pitting corrosion is one of the most common forms of corrosion in easily passivated metals or alloys, and it often occurs in the environment where aggressive anions and oxidizing agents coexist. Because of its strong concealment and great destructiveness, this corrosion has been widely valued and deeply studied. One of the research focuses is how to improve the pitting resistance of materials. Adding a corrosion inhibitor to the solution can effectively improve the pitting resistance of the material, but this method has many limitations or is not applicable in applications. Improve its pitting resistance ([1] I.Avramova, D.Stoychev, Ts.Marinova, Applied Surface Science, 200...
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IPC IPC(8): C23C28/04C25D13/04
Inventor 蒋益明廖家兴孙道明王浩李劲
Owner FUDAN UNIV