Tantalum powder, 99.99% trace metals basis; CAS Number: ; Synonyms: Ta; find Sigma-Aldrich-545007 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich
WhatsApp: +86 18221755073
of the powdered tantalum is of great importance for the production and the properties of the wire. Especially the content of oxygen in the powder is important as a high content of oxygen entails a high strength. This can be prevented to a certain extent through particular treatment and mixing of the powder with high quality powder.
WhatsApp: +86 18221755073
An accidental tantalum powder deflagration with casualties occurred during the operation of a bag filter dust-collecting device. To understand the mechanism of the incident and its material hazards, experiments for determining the combustibility and …
WhatsApp: +86 18221755073
TANIOBIS is a leading global developer and producer of high-quality tantalum and niobium metal powders, oxides, compounds, and chlorides. We specialize in supplying materials for capacitors, surface acoustic wave filters, semiconductors, and more. ... Product Quick Search - Find the Powder You Need.
WhatsApp: +86 18221755073
The original tantalum powder is obtained by using sodium to reduce molten potassium fluorotantalate at high temperature [29]. Three techniques were applied for shaping the Ta powder particles. ... Vickers microhardness was measured on the …
WhatsApp: +86 18221755073
Tantalum carbide (TaC) and niobium carbide (NbC) are important components of cemented carbides and cermets used for metalcutting applications, primarily indexable inserts. ... Machine tool modernization. Insofar as this enables tool steels to be replaced by cemented carbides and cermets, this should be generate demand, but there …
WhatsApp: +86 18221755073
The tantalum powder is mixed with alloying elements and then filled into molds. The mixture is then compacted at a pressure of up to 2000 bar. The resulting pressed blank (also known as a "green compact") is then sintered in special furnaces at temperatures of over 2000 °C. During this process, it acquires its density and its microstructure forms.
WhatsApp: +86 18221755073
Nitrogen can be absorbed on the surface at room temperature when tantalum powder is taken out in air atmosphere. And it should be fully removed during N/O analysis but it seemed to be detected in analyzer without full removing, in particular it was significant in fine powder produced at low 1,073K.
WhatsApp: +86 18221755073
Tantalum metal powder, including the precursor to capacitor grade powder, is generally produced by the sodium reduction of the potassium tantalum fluoride in a molten salt system at high temperature. The metal can also be produced by the carbon or aluminium reduction of the oxide or the hydrogen or alkaline earth reduction of tantalum chloride.
WhatsApp: +86 18221755073
The tantalum atom has a radius of 146 pm and a Van der Waals radius of 217 pm. Tantalum was first discovered by Anders G. Ekeberg in 1802 in Uppsala, Sweden however, it was not until 1844 when Heinrich Rose first recognized it as a distinct element. In its elemental form, tantalum has a grayish blue appearance.
WhatsApp: +86 18221755073
The use of tantalum can be broken down into four main product types:-Tantalum powder is used in the fabrication of capacitors for electronic circuits in automotive components such as ABS, airbag activation modules, GPS, in consumer electronics e.g. laptops, mobile phones, DVD, flat screen TVs, etc;
WhatsApp: +86 18221755073
The balance between the strength and the toughness of pure tantalum (Ta) fabricated with selective laser melting (SLM) additive manufacturing is a major challenge due to the defect generation and affinity for oxygen and nitrogen. This study investigated the effects of energy density and post-vacuum annealing on the relative density and …
WhatsApp: +86 18221755073
The Aizu team are intensely focused on advanced tantalum materials research and development and continue industry-leading tantalum powder product improvement. The Aizu plant is certified for ISO 9001 and ISO 14001 by Japan Chemical Quality Assurance Ltd (JCQA). In 1994, the facility was one of the first in Japan to be certified ISO 9001.
WhatsApp: +86 18221755073
However, tantalum can also exhibit oxidation states of +2, +3, and +4, although these are less common. Compounds with lower oxidation states are usually found under specific conditions and are less stable compared to those with a +5 state. ... Always use appropriate safety equipment, including gloves and eye protection, when handling tantalum ...
WhatsApp: +86 18221755073
1. Introduction. Upon its discovery in 1802, Anders Ekeberg named his new element tantalium (now tantalum) after the mischievous Greek demigod Tantalus [1, 2].According to mythology, Tantalus was punished by Zeus for his mischief-making by being forced to stand eternally in a pool of water beneath a fruit tree, with the water always …
WhatsApp: +86 18221755073
The tantalum powder obtained by calcium thermal reduction with a small specific surface and high oxygen content (0.566âˆ'0.610 wt.%) [118], which makes it unsuitable for use in capacitors. However, the tantalum powder can be cold-rolled into various products such as rods after electron beam melting.
WhatsApp: +86 18221755073
suitable methods to machine tantalum and niobium alloys, ... (NbSi2) layer was formed at the surface of Nb plates by heating those plates with Si powder and a piece of Na at 1000-1200K for 1-48 h ...
WhatsApp: +86 18221755073
Global Advanced Metals (GAM), a leader for almost 70 years in the production of tantalum and niobium products, has undertaken to study the effect of oxygen on laser printed tantalum parts.
WhatsApp: +86 18221755073
Pure tantalum spherical powder particles (Guangdong Yinna Technology Co, Ltd., China) were used in this study. The particle size of tantalum powder is 5–25 μm with the oxygen content of 358PPM, and the bulk density of 9.84 g/cm 3. The scanning electron microscope (SEM) morphology of pure tantalum powder is shown in Fig. 1.
WhatsApp: +86 18221755073
Tantalum smelting method Tantalum smelting process. Tantalum niobium ore is the main raw material for the production of tantalum, but it is often associated with a variety of metal, so the main step is the decomposition of tantalum smelting concentrates, purification and separation of tantalum and niobium, produced pure compound of …
WhatsApp: +86 18221755073
In the case of tantalum carbide, this powder is mixed with carbon to form a ceramic material that is both strong and heat resistant. Properties & Applications. Tantalum carbide has several beneficial properties that make it ideal for certain applications. It has a very high melting point (up to 3500°F or 1921°C), making it incredibly heat ...
WhatsApp: +86 18221755073
To improve the performance of porous tantalum (Ta) manufactured by laser powder bed fusion (L-PBF) and meet its application requirements in medicine, the authors of this paper studied the influence of L-PBF process parameters on the strut surface morphology and mechanical performance. It was found that the powder layer thickness …
WhatsApp: +86 18221755073
Additive manufacturing (AM) exhibits a prime increment in manufacturing technology development. The last few decades have witnessed massive improvement in this field of research, including the growth in the process, equipment, and materials. Irrespective of compelling technological advancements, technical challenges provoke …
WhatsApp: +86 18221755073
While tantalum capacitors remain the component of choice in many applications, current global conditions are straining the tantalum supply chain and extending lead times for these critical components. Dennis Zogbi looks at potential factors impacting the availability of tantalum ore and powder, as well as the finished …
WhatsApp: +86 18221755073
Bulk ultra-fine grain tantalum was successfully fabricated from pure tantalum powder particles with an average particle size of 50 μm by equal channel angular extrusion at 900° C and 1200° C ...
WhatsApp: +86 18221755073
Raw tantalum powder has a high purity of 99.9%, in which the oxygen content is 860 ppm and the carbon content is 250 ppm. In addition, raw tantalum powder has poor flowability due to the irregular shape and the apparent density is only 3.87 ± 0.02 g/cm 3. Download: Download high-res image (181KB) Download: Download full-size …
WhatsApp: +86 18221755073
The sketch of a cross sec- tion of the flake tantalum powder with a thickness of 600 nm in the middle plane having a width-to-thickness ratio of 6 is shown in Fig. 12(a), where a semicircle on the ends and a rectangle in the middle can be seen. If the flake tantalum powder is anodized at 140 V, then Fig. 12(b) shows that the thickness of the ...
WhatsApp: +86 18221755073
Elcan is by far the worlds leader at powder screening under 10um on our Hi-Sifter technologies with 98% efficiencies, extremely high throughput rates and the ability to produce cleaner product over any other machine in the market today. In the past, we had great success in the electronics industry which is constantly making smaller and smaller ...
WhatsApp: +86 18221755073
Tantalum and Tantalum Alloy UNS R05200: pure tantalum, vacuum electron-beam melting technology. UNS R05400: pure tantalum, powder-metallurgy technology. UNS R05252: tantalum tungsten alloy, 97.5 % Ta, 2.5 % W. UNS R05255: tantalum tungsten alloy, 90 % Ta, 10 % W. UNS R05240: tantalum niobium alloy, 60 % Ta, 40 % W. …
WhatsApp: +86 18221755073
Introduction. Tantalum carbide (TaC) is used in cutting tools due to its exceptional hardness and high melting point, which make it well-suited for applications where wear resistance and durability are critical. …
WhatsApp: +86 18221755073