Precious metals play a crucial role in many high-end fields, such as jewelry and electronics industry. However, their susceptibility to corrosion also makes protection a key factor. The all hydrogen polysilazane liquid coating material IOTA PHPS plays an excellent role in the anti-corrosion of precious metals.
IOTA PHPS coating has a unique chemical structure and excellent performance characteristics. Its core component is fully hydrogenated polysilazane, which exhibits strong affinity and adhesion when in contact with precious metals. This is due to its generally good adhesion ability to metal ceramic polymer materials. For precious metals such as gold, silver, and platinum, it can tightly adhere to their surfaces, forming a seamless, durable protective layer.
In terms of product characteristics, its good solubility allows it to flexibly adjust coating concentration and application methods according to different forms of precious metal products and anti-corrosion requirements. There are various curing methods, including natural curing at room temperature for a certain period of time, and moisture curing under specific humidity (90%) and temperature (150 ℃) conditions. The ideal curing effect can be achieved in just 2 hours, greatly improving production efficiency and meeting the needs of different production scales and processes.
From the technical parameters, it is a colorless and transparent liquid with a solid content of 20%. The solvent is n-butyl ether, and the liquid density is 1.16-1.31 g/ml. After curing, the density is 1.6-2.0 g/ml. These parameters ensure the stability and operability of the coating during use.
Looking at the coating performance again, the coating is mainly composed of SiOx with a thickness exceeding 100nm, providing a reliable physical barrier for precious metals. In terms of hardness, after high-temperature curing, the hardness can reach 8-10 GPa, and the elastic modulus is between 100-130 GPa. This high-strength coating can effectively resist external factors such as physical friction and chemical corrosion. Its rust prevention, alkali resistance, and salt water resistance are very strong, and it can effectively cope with various situations that may cause corrosion of precious metals in daily environments, such as humid air, salty water vapor, etc. In terms of transparency, the transparency in the visible light range is greater than 90%. For precious metal products such as jewelry that focus on appearance display, coating will not affect their original luster and aesthetics, and they can still shine brilliantly.
In practical applications, for the jewelry industry, after the processing of precious metal jewelry is completed, a simple coating operation can protect the jewelry from corrosion during long-term wearing and storage, extend the service life of the jewelry, and maintain its value. In the electronics industry, precision components made of precious metals, coated with IOTA PHPS coating, can stably exhibit their performance, reduce equipment failures caused by corrosion, and improve product reliability and stability.
In short, IOTA PHPS coating, with its excellent performance, has become a powerful assistant in the field of precious metal anti-corrosion, safeguarding the long-term preservation and stable use of precious metal products.

Room termperature curing polysilazane, pls check IOTA 9150, IOTA 9150K.       
High termperature curing polysilazane, pls check IOTA 9108, IOTA 9118.