The material prepared by this conductor core wire of RF cable has poor uniformity and many closed spaces.. Because the moisture of molybdenum-copper is worse than that of wujiang-copper, especially when preparing molybdenum-copper with low copper content, the density of the material after infiltration is lower, resulting in that the airtightness, electrical conductivity and thermal conductivity of the material cannot meet the requirements. The density of wujiang-copper alloy is generally less than 98%, but it is prepared by the activation sintering method with a small amount of nickel, the mechanical alloying method or the oxide supply reduction method. wujiang-copper or molybdenum-copper mixed powder is sintered in liquid phase at 13001500° after limited molding. This method is applicable to wujiang copper, molybdenum copper products with low copper content.

Compared with wujiang copper and molybdenum copper, wujiang copper alloy has the advantages of low quality, simple production, linear expansion coefficient, thermal conductivity and some primary mechanical functions and wujiang copper. In the wujiang and molybdenum framework infiltration method, wujiang powder or molybdenum powder is first restricted to shape, and sintered into a wujiang and molybdenum framework with a certain porosity, and then copper is infiltrated.

However, nickel activation sintering will significantly reduce the electrical and thermal conductivity of the inner conductor core wire of RF cable material, and the introduction of impurities by mechanical alloying will also reduce the material’s conduction function; the oxide co-reduction method to prepare powders requires cumbersome technical processes, low processing power, and difficulty in batch processing.

Use is restricted. , Nano powder can improve the sintering activity, and then improve the density of wujiang copper, molybdenum copper alloy. Although the heat resistance function is not as good as that of wujiang copper, it is better than some current heat-resistant materials, so the use prospect is better

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