During aluminum machining, the surface of aluminum alloy parts is often contaminated with various oils, residual polishing paste, hand prints, oil seals, surface waxes and other contaminants. In order to ensure the quality of subsequent plating or oxidation treatment, the degreasing of the aluminum surface is crucial. However, aluminum has poor chemical stability and is prone to corrosion in alkaline or acidic environments. How to avoid corrosion of the substrate while removing oil has become a major challenge in the development of aluminum degreasing powders.
In the field of electroplating, zinc-nickel alloys are widely used for their excellent corrosion resistance, electrochemical properties and mechanical characteristics. Among them, the alkaline zinc-nickel alloy process and the acid zinc-nickel alloy process are the two main plating methods, each of which produces coatings with different characteristics.
During the electroless copper plating process, it is crucial to improve the bonding of the plated layer to the substrate, which not only concerns the performance of the product, but also directly affects its service life and reliability. In this issue, we will take a closer look at how to achieve this goal from several aspects and how it can be solved through the use of electroless copper plating solutions.
Bigely high phosphorus electroless nickel additive Ni-811 is a product with good corrosion resistance, neutral salt spray test in more than 168 hours, and resistance to nitric acid test 5min basically does not change color. So, how is its corrosion resistance so good?
Bigely trivalent chrome colored zinc passivator BZ-208 is a new high performance passivator for trivalent chrome galvanized coatings. What about this trivalent chrome colored zinc passivator, here's what you need to know.
In the field of electroplating, black zinc passivator is widely used to enhance the corrosion resistance of zinc plating. Salt spray testing is one of the most important methods to measure the corrosion resistance of a coating. In this article, we will discuss in detail several key factors affecting the salt spray capability when using black zinc passivators, with special reference to why Bigely black zinc passivator BZ-216 performs so well in the salt spray test.
