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Mo-20%Re Molybdenum-Rhenium Alloy Rod
1. Description Of Mo-20%Re Molybdenum Rhenium Alloy Rod:
Molybdenum-rhenium alloy rod is an alloy composed of metal
molybdenum as matrix element and alloying element rhenium. The
alloy exhibits a rhenium effect that improves plasticity, and the
rhenium content in the alloy is generally 11% to 50% (mass
fraction).
2. Size Of Mo-20%Re Molybdenum Rhenium Alloy Rod:
Product name | Main grade | Main Size(mm) |
|---|---|---|
| Molybdenum Rhenium Alloy rod | Mo-20%Re Mo-41%Re Mo-44.5%Re Mo-47.5%Re | Φ1~Φ20×L |
Other size and content rate,pls inquiry for us,we can custom.
3. Performance Of Mo-20%Re Molybdenum Rhenium Alloy Rod:
From the chemical composition point of view, Mo has a melting point
of 2622 °C and a boiling point of 5560 °C. It has the
characteristics of high hardness, low thermal expansion
coefficient, good high temperature strength, corrosion resistance
and good electrical and thermal conductivity; Re has a melting
point of 3180 °C and a boiling point of 5627℃, with excellent
plasticity, mechanical properties, creep resistance, oxidation
resistance, wear resistance and corrosion resistance. Therefore,
the alloy composed of the two has the advantages of both molybdenum
and rhenium.
According to different rhenium content, molybdenum-rhenium
alloy rod can be divided into many types, such as Mo-20%Re,
Mo-41%Re, Mo-44.50%Re, Mo-47.5%Re and Mo-50%Re, etc. Different
types of products performance and specific use vary. Under certain
conditions, with the increase of rhenium content, the plasticity,
ductility and high temperature strength of alloy products are
better. Generally, Mo-5%Re and Mo-41%Re are used as thermocouple
wires and structural parts of flight equipment, and Mo-50%Re is
used as high temperature structural parts.
4. Production method Of Mo-20%Re Molybdenum Rhenium Alloy Rod:
Molybdenum-rhenium alloy rod are generally prepared by double
sintering method, powder metallurgy method or medium temperature
sintering method.
The process route of the double sintering method is as follows:
mixing molybdenum powder and rhenium powder, pre-sintering under
pressure and temperature rise, vacuum sintering, and finally
sintering under the protection of hydrogen into a
molybdenum-rhenium sintered ingot.
The process route of powder metallurgy is as follows: mix
molybdenum powder and rhenium powder, then pre-sinter into
molybdenum-rhenium pre-sintered ingot, and then sinter at high
temperature into molybdenum-rhenium sintered ingot.
The process route of the medium temperature sintering method is as
follows: firstly reduce molybdenum oxide to molybdenum powder,
ammonium rhenate to rhenium powder, then mix the two by ball
milling, and then pressurize and sinter molybdenum-rhenium sintered
ingots under the mixing of inert gas and reducing gas. That's it.
Matters needing attention: No matter which preparation method is
used, there are high requirements for the purity of molybdenum
powder and rhenium powder.
5. Application Of Mo-20%Re Molybdenum Rhenium Alloy Rod:
Molybdenum Rhenium alloy rod commonly used in the manufacture
of filaments, X-ray tube targets, grid plates for microwave
communication, high temperature furnace heating elements, high
temperature thermocouples, reactor core heating tubes and
protective plates, etc.
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