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What are the disadvantages of the traditional preparation method of high purity rhenium powder

What are the disadvantages of the traditional preparation method of high purity rhenium powder

(Summary description)High purity rhenium powder manufacturers tell you that in recent years, due to the breakthrough in the preparation technology of rhenium-nickel-based superalloys for aero-engines in my country.

What are the disadvantages of the traditional preparation method of high purity rhenium powder

(Summary description)High purity rhenium powder manufacturers tell you that in recent years, due to the breakthrough in the preparation technology of rhenium-nickel-based superalloys for aero-engines in my country.

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High purity rhenium powder manufacturers tell you that in recent years, due to the breakthrough in the preparation technology of rhenium-nickel-based superalloys for aero-engines in my country, as well as the increase in market demand for semiconductor materials, high-end thermal materials, and petroleum smelting, high purity rhenium powder has been greatly expanded. market application.

high purity rhenium powder factory
Traditional high-purity rhenium powder is generally obtained by calcining and reducing high-purity ammonium rhenate. The specific method is: grinding and crushing ammonium rhenium, calcining and reducing in a hydrogen atmosphere to obtain rhenium powder, and then grinding and crushing to obtain rhenium powder with suitable particle size and distribution, Makes the post-production period much longer than the production reaction time.
This method also has some drawbacks. First, ammonium rhenium acid ball milling is time-consuming and labor-intensive and impurities are introduced; second, there is also the possibility of easy impurities in the rhenium powder ball milling, and the high purity rhenium powder after ball milling is flat and has obvious work hardening, resulting in loose powder. Problems such as low packing density and poor pressing performance seriously affect the subsequent green compact forming and processing.
The particle size of the high purity rhenium powder prepared by the above method is generally coarse, and there are many primary particles, and the particles exist in the form of metallurgical bonding, which greatly affects the application performance of the powder.

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