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Properties and Applications of Rhenium
Rhenium is a high-melting-point, highly stable metal widely used in the field of electric light sources. Its melting point is close to that of tungsten, approximately 3180°C, but it has a lower evaporation rate than tungsten and maintains relatively stable properties in high-temperature environments.
Mechanical Properties:
Rhenium exhibits high electrical resistivity and demonstrates strong resistance to electrical current among refractory metals. Annealed rhenium possesses plasticity comparable to copper, making it suitable for machining. While strength increases after processing, elongation decreases correspondingly.
Chemical Stability:
Rhenium is exceptionally chemically stable. In oxygen-containing atmospheres, oxidation only begins at temperatures exceeding 1000°C. Consequently, it is the most stable of all refractory metals. Furthermore, rhenium does not react with hydrogen or nitrogen but can form carbides with carbon, enabling it to maintain excellent performance under high-temperature and high-pressure conditions.
Vacuum Properties:
Rhenium exhibits excellent characteristics in vacuum environments and is frequently used in applications involving high temperatures, high pressures, and high vacuum conditions.
#Rhenium
#Lighting Materials
#High-Melting-Point Metals
#Mechanical Properties
#Chemical Stability
#Refractory Metals
#Vacuum Environments
#Metallic Materials
#High-Temperature Metals
#Industrial Applications
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