Oxidation resistance characteristics of molybdenum copper alloy

Molybdenum-copper alloy, with its unique composition and properties, demonstrates outstanding performance across various fields, with its antioxidation capability being a key feature of interest.

Firstly, the alloy possesses two distinct characteristics: high electrical and thermal conductivity, owing to the excellent properties of molybdenum and copper individually. This enables molybdenum-copper alloy to maintain excellent electrical and thermal conductivity even in high-temperature environments, thereby ensuring long-term stability in its performance.

Secondly, the low coefficient of thermal expansion of molybdenum-copper alloy is a significant factor in its antioxidation ability. By adjusting the composition appropriately, its coefficient of thermal expansion can be reduced to the desired level, matching that of other materials and avoiding thermal stress damage caused by differences in expansion coefficients, thereby enhancing the material's antioxidation capability.

The special properties of molybdenum-copper alloy at high temperatures also support its antioxidation. It exhibits good strength and a certain degree of plasticity at room and moderate temperatures. Moreover, when the temperature exceeds the melting point of copper, the copper component can evaporate and absorb heat, playing a cooling role, which makes molybdenum-copper alloy suitable for special high-temperature applications, such as liners for rocket nozzles withstanding high combustion temperatures.

Molybdenum-copper alloy, being a non-magnetic material, also performs exceptionally well, as its non-ferromagnetic properties make it less susceptible to oxidation in magnetic field environments, further enhancing its antioxidation performance.

Additionally, the low gas content, good vacuum performance, and excellent machinability of molybdenum-copper alloy provide further assurance for its antioxidation capability, making it more suitable for use in various harsh environments.

In conclusion, molybdenum-copper alloy, with its unique physical and chemical properties, exhibits excellent antioxidation performance. Its antioxidation capability plays a crucial role in applications such as vacuum contacts, conductive heat dissipation elements, and special instrument components, and shows significant potential in high-temperature components like rocket and missile parts. However, addressing the high-temperature oxidation issue remains a focus for future research in the application of molybdenum-copper alloy in high-temperature structural materials.