Method for preparing Ni-P-WO3 nano-composite coating through pulse electrodeposition
A pulse electrodeposition and nano-composite technology, applied in the field of pulse electrodeposition, can solve the problems of weak bonding, low protection efficiency, and low utilization rate of visible light, etc., and achieve the effects of easy operation and control, stable plating solution, and not easy to deteriorate
Inactive Publication Date: 2015-12-16
GUILIN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology
However, photocathode protection technology also has some technical problems: weak bonding on carbon steel and other common substrates, low utilization rate of visible light (only absorbs ultraviolet light), rapid recombination of photogenerated electrons and holes in dark state makes its protection efficiency Low, these problems are the key to the practical application of photocathode protection technology, which has important theoretical and practical significance for the protection of carbon steel and other metal materials under natural environmental conditions
In addition, Ni-P-WO was prepared by pulse electrodeposition technique 3 The bath formula and process method of nanocomposite coating have not been reported yet
Method used
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Experimental program
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Effect test
Embodiment
[0017] (1) Preparation of plating solution
[0018] a. NiSO 4 ·6H 2 O, NiCl 2 ·6H 2 O, H 2 BO 3 , NaH 2 PO 4 ·H 2 O, saccharin, and sodium lauryl sulfate were respectively dissolved in distilled water to prepare a solution, in which NiSO 4 ·6H 2 O concentration is 120g / L, NiCl 2 ·6H 2 O concentration is 40g / L, H 2 BO 3 The concentration is 36g / L, NaH 2 PO 4 ·H 2 The concentration of O is 20g / L, the concentration of saccharin is 2g / L, and the concentration of sodium lauryl sulfate is 0.1g / L. After constant volume in a volumetric flask, it is aged for 8h for use; all reagents used are of analytical grade.
[0019] b. Measure the solution prepared in step a of step (1) and pour it into the electrolytic cell, adjust the pH value between 4 and 4.5, and add nano-WO with a particle size of 100nm 3 The particles were placed in the above solution, placed in an ultrasonic instrument and ultrasonically oscillated for 1 hour to make nano-WO 3 The particles were uniformly...
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Abstract
The invention discloses a method for preparing a Ni-P-WO3 nano-composite coating through pulse electrodeposition. The method for preparing the Ni-P-WO3 nano-composite coating through pulse electrodeposition comprises the steps that firstly, a plating solution is prepared according to requirements; secondly, a carbon steel base body is preprocessed, namely the carbon steel base body is polished through abrasive paper, washed through distilled water, chemically deoiled, washed through distilled water, pickled, activated and washed through distilled water; and finally, plating is conducted. The optimum plating condition is determined with the deposition rate, the microhardness and the surface topography as inspection indexes. According to the method, operation is easy and convenient, control is easy, the plating solution is stable and not prone to going bad, and the prepared Ni-P-WO3 nano-composite coating has excellent performance and has excellent corrosion inhibition performance in simulated sea water; the coating has broad application prospects in the functional composite plating field.
Description
technical field [0001] The invention belongs to the technical field of pulse electrodeposition, in particular to a kind of Ni-P-WO prepared by pulse electrodeposition 3 A method for nanocomposite coatings. Background technique [0002] Metal corrosion and protection technology has always been a hot topic of research by scholars at home and abroad. Environmental friendliness, high performance and long-lasting anti-corrosion technology are also the main goals of scientists today. The main technologies of metal corrosion and protection include surface treatment and coating technology, corrosion inhibitor technology, and cathodic protection technology. Among them, photocathode protection technology is a new type of cathodic protection method proposed by Japanese scholars in the 1990s. The semiconductor film is coated on the metal to be protected. The semiconductor film is not sacrificed during the protection process and can become a permanent protective coating. Has the advan...
Claims
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IPC IPC(8): C25D5/18C25D3/56C25D15/00
Inventor 刘峥张菁郭亚晋莫国芳
Owner GUILIN UNIVERSITY OF TECHNOLOGY