Plasma metal wire mesh spraying with nickel-aluminum white alumina coating

Hydrogen production via water electrolysis is currently an important industrial method for hydrogen generation. To enhance the adsorption surface area of nickel meshes, Guangzhou Sanxin Technology Development first coats the surface of the nickel mesh with a nickel-aluminum alloy, then reacts this alloy with a concentrated sodium hydroxide solution. As a result, most of the aluminum dissolves, leaving behind numerous micropores that give the nickel mesh surface a three-dimensional porous structure. This significantly increases the adsorption surface area, thereby boosting catalytic activity and improving hydrogen production efficiency. Guangzhou Sanxin provides nickel mesh coating equipment, plasma spraying equipment, automated production lines, as well as comprehensive technical support.

Supersonic rotor with tungsten carbide coating—wear-resistant, corrosion-resistant, and high-temperature resistant.

The SX-5000 supersonic flame spraying equipment consists of five main components: the spray gun, powder feeder, control system, heat exchange system, and various pipelines. It is a compact spraying device characterized by simple operation, stable performance, low fuel consumption, and excellent coating quality.

Nickel-aluminum alloy plasma spraying on wire mesh to fabricate porous-structured Raney nickel wire mesh.

Nickel-aluminum alloy wire mesh is prepared by plasma spraying, resulting in a porous structure. Raney nickel—a fine-grained solid catalyst composed of a nickel-aluminum alloy—is widely used in numerous industrial processes. It was first introduced in 1962 by American engineer Murray Raney[1] as an alternative catalyst for the hydrogenation of vegetable oils in industrial production. Today, Raney nickel serves as a heterogeneous catalyst and is extensively employed in various organic syntheses and hydrogenation reactions. ●The preparation of Raney nickel involves reacting a nickel-aluminum alloy with sodium hydroxide. This process, known as "activation," dissolves most of the aluminum from the alloy, leaving behind a highly porous structure. This porous architecture provides an exceptionally large surface area, thereby endowing the catalyst with high catalytic activity. In a typical Raney nickel catalyst, nickel accounts for approximately 85% by mass; accordingly, for every two nickel atoms, there is one aluminum atom forming part of the catalyst. The aluminum plays a crucial role in maintaining the pore structure and thus contributes positively to the overall performance of the catalyst.

Plasma Thermal Spraying Hydrogen-Generating Reni-Nickel Plasma Equipment Nickel Mesh Spraying Production Line

Plasma thermal spraying for hydrogen production, Renie nickel catalyst examples, equipment, nickel mesh spraying production line.

Nickel mesh spraying plasma production line for nickel-aluminum alloy powder

Plasma-nickel mesh coating with zirconia for wear and corrosion resistance

Plasma-Nickel Mesh Coating with Zirconia Electrolysis of water for hydrogen production is currently an important industrial method for hydrogen generation. To enhance the adsorption surface area of nickel meshes, Guangzhou Sanxin Technology Development first coats the surface of the nickel mesh with a nickel-aluminum alloy. Subsequently, this nickel-aluminum alloy is reacted with a concentrated sodium hydroxide solution; most of the aluminum dissolves, leaving behind numerous micropores. As a result, the surface of the nickel mesh develops a three-dimensional porous structure, significantly increasing its adsorption surface area and thereby boosting catalytic activity and improving hydrogen-production efficiency. Guangzhou Sanxin provides nickel mesh coating equipment, plasma spraying equipment, and automated production lines, along with comprehensive technical support.

Nickel mesh coated with nickel-aluminum alloy powder

Nickel-aluminum alloy thermal spray powders are often used as base layers. Each particle of these powders consists of fine nickel and aluminum powders. During spraying, the thermal spray powder is heated to over 600 degrees Celsius by the flame, triggering a vigorous chemical reaction between nickel and aluminum that forms intermetallic compounds and releases substantial heat. At the same time, some of the aluminum undergoes oxidation, generating additional heat. Under these high temperatures, nickel can diffuse into the substrate metal, significantly enhancing the bond strength of the coating. Another notable feature of nickel-aluminum composite thermal spray powders is that the surface of the coating formed after spraying is rough, providing an ideal substrate for bonding other sprayed materials.

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