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Researchers at Amirkabir University of Technology have coated various steels with nickel plasma to increase corrosion and wear resistance.

 | Post date: 2024/04/13 | 
Researchers at Amirkabir University of Technology have coated various steels with nickel plasma to increase corrosion and wear resistance.
Researchers at Amirkabir University of Technology have successfully utilized plasma nitriding on steel to enhance their corrosion and wear resistance for various applications.

According to the Public Relations Office of Amirkabir University of Technology, Seyyed Saber Mirhosseini, a Ph.D. graduate in Materials Engineering and the executor of the project "Wear Behavior of Electroless Nickel-Boron-Nano Diamond Composite Coating Plasma Nitrided on AISI 4140 Steel," stated: "Today, due to the complexity of applications of various parts in the industry, the need for multiple processes to produce a component is inevitable."

He emphasized that one of the most important finishing operations usually carried out as the final process in the production of a part is surface property modification through surface engineering operations. The goal of surface engineering is to appropriately modify various technologies to achieve the desired surface properties in the design for a specific application, in a way that is very useful and effective in terms of quality and cost.

He mentioned that one of the most common surface modification methods in the industry, especially in our country's industry, is electroless nickel plating, which has the capability to create conductive and insulating surface coatings and form continuous coatings with uniform thickness.

Referring to the problems with these coatings, he stated: "Their hardness and wear resistance are low; therefore, in this project, for the first time, nano diamond particles with high hardness were used as a reinforcing agent and a novel heat treatment method of plasma nitriding was used to upgrade the wear and tribological properties of nickel-boron composite coatings."
The researcher from Amirkabir University of Technology stated that these coatings have various applications in industries such as chemical, food, aerospace, automotive, cutting tools, mold making, and defense industries.

The main objective of this project was to achieve nickel-boron electroless coatings reinforced with hard nano diamond particles and plasma nitrided with desirable wear behavior. By optimizing the process and fabricating samples at different concentrations and times, comparing and testing them against each other, an optimal sample in terms of time, concentration, and cost was obtained.

According to Mirhosseini, all these factors led to the enhancement and improvement of coating properties, reduction in production costs, decreased production time, scalability, and repeatability.

He mentioned that with the necessary support and favorable conditions, commercialization of this product is possible, and a significant step towards indigenizing this product can be taken.

He stated that the results of this research can be used for further studies and research to enhance electroless plating coatings. Additionally, it can be applied in the field of surface technology and coating of components used in various industries such as chemical, food, aerospace, automotive, cutting tools, mold making, and defense industries.

This project, guided by Dr. Farzad Mahboubi, a faculty member of the Materials and Metallurgical Engineering Department at Amirkabir University of Technology, has reached its conclusion.