1、Microstructure evaluation of Si

Si-modified aluminide coatings are promising for improving oxidation and corrosion resistance in superalloys at high temperatures. This study investigated the effect of different silicon levels in the aluminizing slurry on the morphology and structure of Si-modified aluminide coatings on IN625.

2、Pt改性镍基高温合金铝化物涂层研究进展

本文对镍基高温合金上抗高温氧化的Pt改性 β - (Ni，Pt) Al涂层和 γ - γ '型铝化物涂层重点进行阐述，并综述了其制备工艺及微观结构、氧化行为的研究现状及展望。 Pt改性的铝化物涂层制备过程一般包括四个步骤 [15]。

3、Is Modified Resin Suitable for Use on Aluminized Surfaces?

First, let us understand the basic concepts of aluminizing and modified resins. Aluminizing is a metalworking process that involves coating aluminum or aluminum alloys with a thin layer of aluminum to enhance its corrosion resistance and aesthetic appeal.

4、Microstructure of Aluminide Coatings Modified by Pt, Pd, Zr and Hf

In the present article the doping of aluminide coatings by Pt/Pd as well as Hf or Pd using industrial processes was developed. The different combinations of doping elements were tested as well as their influence on chemical composition of coatings was initially investigated.

Microstructure evaluation of Si

This study investigated the effect of different silicon levels in the aluminizing slurry on the morphology and structure of Si-modified aluminide coatings on IN625.

Heat

Till date, lack of reports on aluminizing processes modified by chromium on Ni-based alloys exists. To gain new information about this phenomenon, we have used the following procedure.

Hot corrosion behavior of reactive

Diffusion aluminide coatings should be considered to be the most important coating category for the protection of high-temperature components, especially those made of nickel-based alloys.

MICROSTRUCTURAL EVOLUTION AND HARDNESS PROPERTIES OF Si

termetallic compounds which significantly alter the surface characteristics of the base material by enhancing wear, oxidation, and corrosion properties of the steel. Aluminizing processes can be achieved through the followin.

Slurry Aluminizing Mechanisms of Nickel

The slurry aluminizing process is widely employed to enhance the oxidation and corrosion resistance of nickel-based superalloys used in high-temperature environments such as gas turbines and...

Journal of Chinese Society for Corrosion and protection

Research Progress of Pt-modified Aluminide Coating on Nickel-base Superalloys. Journal of Chinese Society for Corrosion and protection, 2022, 42 (2): 186-192.

In modern industry, the selection and application of materials play a critical role in determining the quality and performance of products. Particularly in fields such as electronics, communications, and automotive manufacturing, the use of metal coatings is widespread. Among these, the application of modified resins in aluminizing processes represents an indispensable aspect of technological advancement.

Modified resins, as the name implies, are specialized chemical materials whose properties are altered through physical or chemical means to meet specific application requirements. In aluminizing processes, modified resins primarily serve the following functions:

1. Enhancing Coating Adhesion: Conventional aluminizing often struggles with poor adhesion due to the significant difference in thermal expansion coefficients between aluminum and the substrate, leading to coating delamination. Modified resins form a protective film that isolates direct contact between aluminum and the substrate, thereby strengthening the adhesion of the coating.

2. Improving Surface Quality of the Aluminum Layer: When added to aluminum salt solutions as additives, modified resins adjust parameters such as pH and ionic strength to control the deposition rate and morphology of aluminum ions. This results in a more uniform and细腻 coating. Additionally, they reduce defects like pinholes and cracks, enhancing the overall product quality.

3. Optimizing Coating Performance: By introducing specific functional groups or modifying molecular structures, modified resins can impart special properties to the coating, such as improved wear resistance, corrosion resistance, and electrical conductivity. These enhancements enable aluminized products to meet higher industrial standards.

4. Simplifying Process Flow: Replacing traditional fluxes or plating solutions with modified resins streamlines the aluminizing process. This not only reduces production costs but also boosts efficiency, which is crucial for large-scale manufacturing.

The specific type and application method of modified resins vary depending on the aluminizing process and product requirements. For example, in acidic aluminizing, commonly used resins include polyvinyl alcohol (PVA) and polyamides, while alkaline processes may employ polyacrylamide or polyethylene oxide (PEO). These resins form stable complexes with aluminum ions through coordination reactions, lowering the technical difficulty and energy consumption of the process.

Beyond their functional roles, the environmental impact of modified resins—typically high-molecular-weight compounds—has become a focus of research. Ensuring safe disposal and exploring recycling methods to minimize ecological harm are urgent challenges.

modified resins hold significant importance in aluminizing processes. Through deeper understanding of their properties and continuous innovation in application techniques, aluminizing is poised to expand its advantages and value across broader industrial domains in the future.