High-temperature strength of refractory metals, alloys and composite materials based on them. Part 2. Molybdenum and niobium alloys

Kharchenko, V. K.; Bukhanovskii, V. V.

doi:10.1007/s11223-012-9417-y

Cited by 5 publications

(1 citation statement)

References 15 publications

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“…Niobium is the lightest refractory metal (density = 8.57g/cm 3 ). Niobium and niobium alloys have been used widely in the field of thermal protection materials for aerospace engine, high temperature structural applications, and superconductivity applications, because of high melting point, the good ductility, high welding strength, high thermal conductivity of thin sheets, and excellent corrosion resistance [1,2]. The traditional process is either limited to simple shapes or frequently beset by poor material utilization and contamination [3].…”

Section: Introductionmentioning

confidence: 99%

Study on Spheroidization of Niobium Powders by RF Plasma Processing

Wang

Hao

Guo

2013

AMM

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Spherical niobium powders were synthesized by (RF) argon plasma with irregular niobium powders in this paper. The objective of the present work was to investigate how the feeding rate influence the spheroidization efficiency. The phase composition, morphology and particle size distribution of the powders before and after spheroidization were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and laser micron sizer (LMS). The results show that niobium powders after plasma processing have good dispersity and smooth surfaces, and their spheroidization ratio is almost 100%. The apparent density and flowability of the powder with the spheroidization efficiency 100% is 4.35 g/cm3 and 12.51 s/(50g), respectively. With the increasing of the feeding rate, the spheroidization ratio of niobium powders drops gradually.

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Section: Introductionmentioning

confidence: 99%