Molybdenum Powder
01
Description
Thanks to the low content of interstitial impurities and metallic impurities and the small-grain texture of the material, the finished products boast outstanding plastic properties.
Some of molybdenum's important features in terms of its industrial application include its high heat resistance, electric conductivity and heat conductivity, its relatively low thermal neutron capture cross-section with a volume weight almost twice lower than that of tungsten, etc. Molybdenum's resistance to creep and stress-rupture at high temperatures in a vacuum and in protective atmosphere (argon, hydrogen) is noticeably higher than the same properties of many metals used as the base for heat-resistant materials.
As a result of molybdenum's low temperature coefficient of linear expansion and its high melting point, it ensures the dependable functionality of structures made from molybdenum that operate at high temperatures.
Molybdenum's high thermal conductivity is several times greater than that of ordinarily used heat-resistant alloys, which prevents thermal stresses during rapid heating and cooling.
Molybdenum is resistant to the effects of acids, alkalis and resistive in many molten metals and liquid glasses.
02
specifications
JSC POLEMA produces:
1. Reduced molybdenum powder. Applies:
- in the production of sintered and deformable semi-finished products and items (bar, sheet, rod, electrode, crucible, sputtering target, molybdenum alloys);
- in the production of electrical contacts (mixed with copper) and electronic components;
- as a catalyst, for example, a complex highly efficient molybdenum catalyst for the epoxidation of olefins in the production of polypropylene.
2. Molybdenum powder for plasma spraying. Applies:
- plasma spraying of sublayer or working wear-resistant coatings in heavily loaded sliding bearings (for example, rolling mill bearings), on pump parts and pumping equipment, in ICE fuel injectors, on piston rings, cams, gearbox synchronizer rings, shaft seals, etc.
The coatings have wear-resistant and antifriction properties under high loads; resistance to abrasion and erosion in an oxidizing environment (in air) at temperatures up to 340 ° C.
Approximate hardness values of coatings are 25-34 HRC; production of sintered permeable products by powder metallurgy methods.
1. Reduced molybdenum powder. Applies:
- in the production of sintered and deformable semi-finished products and items (bar, sheet, rod, electrode, crucible, sputtering target, molybdenum alloys);
- in the production of electrical contacts (mixed with copper) and electronic components;
- as a catalyst, for example, a complex highly efficient molybdenum catalyst for the epoxidation of olefins in the production of polypropylene.
2. Molybdenum powder for plasma spraying. Applies:
- plasma spraying of sublayer or working wear-resistant coatings in heavily loaded sliding bearings (for example, rolling mill bearings), on pump parts and pumping equipment, in ICE fuel injectors, on piston rings, cams, gearbox synchronizer rings, shaft seals, etc.
The coatings have wear-resistant and antifriction properties under high loads; resistance to abrasion and erosion in an oxidizing environment (in air) at temperatures up to 340 ° C.
Approximate hardness values of coatings are 25-34 HRC; production of sintered permeable products by powder metallurgy methods.
03
advantages
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The ability to produce powders on a customer's special order due to significant manufacturing experience
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Strict quality control of manufactured products
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Own R&D laboratory
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High homogeneity of powders in chemical composition
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Flexible discount system
04
Product names
JSC POLEMA produces:
1. Reduced molybdenum powder MP-Мо99,95;
2. MP-Мо molybdenum powder for plasma spraying.
You can get full list of products by contacting our sales managers.: export_polema@metholding.com тел.:+7 4872 25-06-76.
1. Reduced molybdenum powder MP-Мо99,95;
2. MP-Мо molybdenum powder for plasma spraying.
You can get full list of products by contacting our sales managers.: export_polema@metholding.com тел.:+7 4872 25-06-76.
05
chemical composition
Guaranteed chemical composition of MP-Мо 99,95 reduced molybdenum powder
* Σ Ме – amount of metallic impurities.
Shape, particle size, bulk density of reduced molybdenum powder:
Guaranteed chemical composition of mechanically ground molybdenum powder MP-Mo:
*The weight percentage of Mo in MP-Мо powder is determined by subtracting the sum of the metallic impurities from 100%.
The shape of the powder particles is splintered.
Main fractions of plasma spraying powders, microns:
Other particle sizes are set in consultation with the customers.
| Grade | Мо, min %* | Chemical composition, max ppm | ||||||||||||
| Fe | Al | Ni | Si | Mg | Na | K | Ca | W | Mn | Zn | C | ∑Ме** | ||
| MP-Мо | 99,95 | 100 | 30 | 50 | 50 | 20 | 30 | 80 | 40 | 130 | 10 | 5 | 40 |
500 |
* Σ Ме – amount of metallic impurities.
Shape, particle size, bulk density of reduced molybdenum powder:
| Particle shape | Particle sizes, microns | Bulk density | Compactibility, g/cm3 under pressure, min | |||
| Average Fischer size |
<5 (during microscopic analysis) |
<100 (during sieve analysis) |
г/см3 | 300 MPа | 700 MPа | |
| Not spherical |
2-4,5 |
> 92% | 100% | 0,8-1,8 | 6,3 | 7,3 |
Guaranteed chemical composition of mechanically ground molybdenum powder MP-Mo:
| Grade | Мо, min %* | Chemical composition, max ppm | ||||||||
| Fe | Al | Ni | Si | Mg | Na | K | Ca | W | ||
| MP-Mo | 99,8 | 300 | 100 | 100 | 100 | 30 | 150 | 400 | 70 | 800 |
*The weight percentage of Mo in MP-Мо powder is determined by subtracting the sum of the metallic impurities from 100%.
The shape of the powder particles is splintered.
Main fractions of plasma spraying powders, microns:
- 20-63,
- 40-80,
- 40-100.
Other particle sizes are set in consultation with the customers.
06
miscellaneous
The particle sizes are set in consultation with the customers.
07
Application areas