Method for obtaining nano iron plating by direct electroplating

A technology of nano-iron and iron coating, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of high requirements for raw materials, long production time, complicated process, etc., to achieve The effect of environmental protection process, environmental impact of recycling, and easy control of concentration

Inactive Publication Date: 2014-08-06
SHANGHAI UNIV
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  • Abstract
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Problems solved by technology

The current synthesis methods of nano-iron are mainly divided into physical methods and chemical methods. Among them, the physical method is based on high vacuum or even ultra-high vacuum technology, which has high requirements for raw materials, and the equipment is expensive, high cost, complicated process, and long production time. Not suitable for the coating of large area workpieces and the preparation of materials with smaller particle size

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  • Method for obtaining nano iron plating by direct electroplating
  • Method for obtaining nano iron plating by direct electroplating
  • Method for obtaining nano iron plating by direct electroplating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1) First Fe 2 o 3 The powder and flake NaOH were mixed at a mass ratio of 2:1, and calcined in air at 400°C for 4 hours to obtain pure NaFeO 2 powder, its XRD pattern is as figure 1 shown.

[0020] 2) Dissolve 100 grams of flake NaOH in 100 milliliters of distilled water to prepare a NaOH solution with a mass fraction of 50%, and place it in a 250 milliliter polytetrafluoroethylene beaker. Appropriate amount of NaFeO 2 The powder is dissolved in NaOH solution to obtain NaFeO 2 saturated solution.

[0021] 3) Put the polished and activated copper sheet (about 1 cm in diameter) and platinum wire as the cathode and anode respectively in the saturated solution, use a constant temperature controller and an electric heating mantle to control the temperature of the saturated solution to 25°C, and apply a constant voltage of 1.8 Volt plating for 3 hours. After electroplating, take out the cathode and rinse it with distilled water, then clean it with absolute alcohol, dry...

Embodiment 2

[0024] 1) First Fe 2 o 3 The powder and flake NaOH were mixed at a mass ratio of 2:1, and calcined in air at 400°C for 4 hours to obtain pure NaFeO 2 powder, its XRD pattern is as figure 1 shown.

[0025] 2) Dissolve 90 grams of flaky NaOH in 90 milliliters of distilled water to prepare a NaOH solution with a mass fraction of 50% and place it in a 250 milliliter polytetrafluoroethylene beaker. Appropriate amount of NaFeO 2 The powder is dissolved in NaOH solution to obtain NaFeO 2 saturated solution.

[0026] 3) The polished and activated copper sheet and platinum wire were respectively fixed in the saturated solution as the cathode and the anode, and the temperature of the saturated solution was controlled by a constant temperature controller and an electric heating mantle to 40°C, and a constant voltage of 1.8 volts was applied for 2 hours of electroplating. After electroplating, take out the cathode and rinse it with distilled water, then clean it with absolute alcoho...

Embodiment 3

[0029] 1) First Fe 2 o 3 The powder and flake NaOH were mixed at a mass ratio of 2:1, and calcined in air at 400°C for 4 hours to obtain pure NaFeO 2 powder, its XRD pattern is as figure 1 shown. .

[0030] 2) Dissolve 95 grams of flake NaOH in 95 milliliters of distilled water to obtain a 50% NaOH solution in a 250 milliliter polytetrafluoroethylene beaker. Appropriate amount of NaFeO 2 The powder is dissolved in NaOH solution to obtain NaFeO 2 saturated solution.

[0031] 3) The polished and activated copper sheet and platinum wire were respectively fixed in the saturated solution as the cathode and the anode, and the temperature of the saturated solution was controlled to 60°C with a constant temperature controller and an electric heating mantle, and a constant voltage of 1.8 volts was applied for 2.5 hours of electroplating. After electroplating, take out the cathode and rinse it with distilled water, then clean it with absolute alcohol, dry it and store it.

[003...

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Abstract

The invention belongs to the technical field of environmentally-friendly electroplating technologies, and relates to a method for obtaining nano metal iron plating by direct electroplating under the lower temperature through utilizing NaFeO2 as raw material and utilizing a sodium hydroxide water solution as an electrolyte. The method mainly comprises the following steps: using Fe2O3 powder and NaOH (which are chemical analytically pure) as raw materials and mixing at the mass ratio of 2:1, calcinating for 4 h at the temperature of 400 DEG C so as to obtain pure NaFeO2 powder raw material; adopting a NaOH solution with the mass fraction of 30-50 percent as the electrolyte, adopting a platinum wire as the anode and adopting a copper sheet as the cathode; dissolving a defined amount of NaFeO2 powder into the NaOH solution to form a NaFeO2 saturated solution; performing electroplating for 1-3 h under the condition of 25-80 DEG C and 1.8 V constant voltage, taking out the cathode after electroplating, and washing and drying, so that the nano iron plating is obtained.

Description

technical field [0001] The invention relates to a method for directly electroplating to obtain a nano-iron coating, which belongs to the technical field of green electroplating technology. Background technique [0002] Since the end of the 20th century, nanotechnology has developed very rapidly and has become one of the popular subjects in the field of science and technology. It has become the most promising frontier topic in this century along with energy, environmental science, biomedicine and information science. The particle size of nanomaterials is between 1-100 nanometers, showing unique macroscopic physical and chemical properties, such as low melting point, high thermal expansion coefficient, high strength, high plasticity, high corrosion resistance, etc., so it is widely used in daily life and high technology. It has broad application prospects in other fields. Due to its excellent physical and chemical properties, nano-iron plays a great role in the fields of medi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/20B82Y30/00
Inventor 邹星礼鲁雄刚谷山林沈斌赖冠全李重河肖玮
Owner SHANGHAI UNIV
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