The oxidation phenomenon and solution of rhenium plate at room temperature are as follows:

1、 Oxidation phenomenon at room temperature

Slow surface oxidation

Rhenium is relatively stable in dry air at room temperature, but gradually loses its luster and forms an oxide film on the surface in humid environments. Although this process is not intense, long-term exposure can still lead to surface oxidation.

Correlation between oxidation products and conditions

At room temperature, rhenium mainly generates low oxidation state oxides (such as ReO ₂), while at high temperatures, it generates the more volatile Re ₂ O ₇ 37. Powdered rhenium has higher activity and may oxidize slightly faster than dense sheets.

2、 Solution

Surface protection treatment

Anti oxidation coating: Covering the surface with inert materials (such as ceramic or metal oxide coatings) to block oxygen contact.

Passivation treatment: forming a dense oxide layer through chemical or electrochemical methods to enhance resistance to subsequent oxidation.

Environmental control

Store in a dry and inert gas environment (such as argon) to avoid the interaction of moisture and oxygen.

If long-term exposure is required, the surface can be cleaned regularly and the protective layer can be reapplied.

Alloying modification

Adding elements such as tungsten and molybdenum to form rhenium based alloys can reduce oxidation sensitivity and improve material stability.