Prášek molybdenu Mo

Prášek molybdenu Mo is an important material with wide-ranging industrial and engineering applications. This definitive guide provides detailed technical information on molybdenum powder types, composition, properties, manufacturing, pricing, suppliers, and comparisons to alternatives.

Overview of Molybdenum Mo Powder

Molybdenum is a silvery-white transition metal with the chemical symbol Mo and atomic number 42. In its elemental form, molybdenum has one of the highest melting points among pure elements at 2,623°C. Some key attributes of molybdenum powder include:

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These properties make molybdenum suitable for use in many high-temperature applications. The addition of molybdenum powder enhances the strength, hardenability, and corrosion resistance in alloy steel.

Table 1: Molybdenum Powder Types

Table 2: Composition of Molybdenum Powder

Properties of Molybdenum Powder

Molybdenum powder possesses several useful physical, mechanical, thermal, and electrical properties that make suitable for high-temperature applications.

**Table 3: Properties of Molybdenum Powder **

Some notable attributes of molybdenum powder:

• Maintains strength, hardness and corrosion resistance at high temperatures up to 1,600°C
• Lowest thermal expansion coefficient of all metals
• Does not suffer embrittlement like tungsten at high temperatures
• Resists attack by molten metals or slag

Molybdenum Powder Characteristics

Molybdenum powder is available in various size ranges, shapes, purity levels and can be compacted into different forms.

Tabulka 4: Types and Characteristics of Molybdenum Powder

Table 5: Powder Compaction and Sintering

Table 6: Supply Forms of Molybdenum Powder

Aplikace z Prášek molybdenu Mo

Molybdenum powder is used extensively due to its high-temperature strength, thermal conductivity, and corrosion resistance. Some major applications include:

Table 7: Applications of Molybdenum Powder by Industry

Table 8: Comparison with Alternative Materials

Advantages of molybdenum powder:

• More ductile and less prone to embrittlement at high temperatures versus tungsten
• Higher strength than tantalum or rhenium at extreme temperatures above 1600°C
• Lower density than tungsten and rhenium
• Better thermal conductivity than tantalum and rhenium
• Lower raw material cost than tantalum or rhenium

Limitations of molybdenum powder:

• Less thermally stable compared to tungsten, tantalum or rhenium in highly oxidizing atmospheres
• More reactive versus tantalum and requires protective coatings in some oxidizing environments
• Susceptible to grain coarsening and creep above recrystallization temperature

Molybdenum Powder Specifications

Molybdenum metal powder is standardized by specifications that define acceptable test methods and values for metrics like purity, particle size distribution, crystal structure, apparent density, and morphology.

Table 9: Common Specifications for Molybdenum Powder

The specifications cover critical quality attributes and set limits like:

• Oxygen, carbon and other impurity content
• Particle shape and size distribution
• Tap density and apparent density
• Powder microstructure and defect limits
• Sieve analysis for larger powders and granules

Specifications may mandate testing using standardized procedures such as flow rate analysis, optical microscopy, pycnometry for true density measurements, etc. Customers often set additional criteria tailored to application needs.

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