Product Name: Synthetic Graphite Powder

Synthetic Graphite Powder Description  :

Graphite archaically referred to as plumbago, is a crystalline form of the element carbon with its atoms arranged in a hexagonal structure.

Synthetic Graphite Powder occurs naturally in this form and is the most stable form of carbon under standard conditions. Under high pressures and temperatures, it converts to diamond. Synthetic Graphite Powder is used in pencils and lubricants.

Synthetic Graphite Powder a good conductor of heat and electricity. Its high conductivity makes it useful in electronic products such as electrodes, batteries, and solar panels. Solid carbon comes in different forms known as allotropes depending on the type of chemical bond. The two most common are diamond and graphite (less common ones include buckminsterfullerene).

In diamond the bonds are sp3 and the atoms form tetrahedra with each bound to four nearest neighbors. In graphite, they are sp2 orbital hybrids and the atoms form in planes with each bound to three nearest neighbors 120 degrees apart.

The individual layers are called graphene. In each layer, the carbon atoms are arranged in a honeycomb lattice with a separation of 0.142 nm, and the distance between planes is 0.335 nm. Atoms in the plane are bonded covalently, with only three of the four potential bonding sites satisfied.

The fourth electron is free to migrate in the plane, making graphite electrically conductive. Bonding between layers is via weak van der Waals bonds, which allows layers of graphite to be easily separated, or to slide past each other.

Electrical conductivity perpendicular to the layers is consequently about 1000 times lower. The two known forms of graphite, alpha (hexagonal), and beta (rhombohedral), have very similar physical properties, except that the graphene layers stack slightly differently.

The alpha graphite may be either flat or buckled. The alpha form can be converted to the beta form through mechanical treatment and the beta form reverts to the alpha form when it is heated above 1300 °C

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Product Name: Synthetic Oil Magnetic Fluids

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Tantalum Niobium Carbide Powder

Product Name: Tantalum Niobium Carbide Powder

Tantalum Niobium Carbide Powder Description :

Tantalum Niobium Carbide Powder is a chemical element with the symbol Ta and atomic number. Previously known as tantalum, it is named after Tantalus, a villain from Greek mythology.

Tantalum is a rare, hard, blue-gray, lustrous transition metal that is highly corrosion-resistant. It is part of the refractory metals group, which are widely used as minor components in alloys.

The chemical inertness of tantalum makes it a valuable substance for laboratory equipment, and as a substitute for platinum.

Its main use today is in tantalum capacitors in electronic equipment such as mobile phones, DVD players, video game systems, and computers. Tantalum, always together with the chemically similar niobium, occurs in the mineral groups tantalite, columbite, and coltan (a mix of columbite and tantalite, though not recognized as a separate mineral species.

Tantalum is considered a technology-critical element. Tantalum is dark dense, ductile, very hard, easily fabricated, and highly conductive of heat and electricity. The metal is renowned for its resistance to corrosion by acids; in fact, at temperatures below 150 °C tantalum is almost completely immune to attack by the normally aggressive aqua regia.

It can be dissolved with hydrofluoric acid or acidic solutions containing the fluoride ion and sulfur trioxide, as well as with a solution of potassium hydroxide.

Tantalum's high melting point of 3017 °C (boiling point 5458 °C) is exceeded among the elements only by tungsten, rhenium, and osmium for metals, and carbon. Tantalum exists in two crystalline phases, alpha, and beta.

The alpha phase is relatively ductile and soft; it has a body-centered cubic structure (space group Im3m, lattice constant a = 0.33058 nm), Knoop hardness 200–400 HN and electrical resistivity 15–60. The beta phase is hard and brittle; its crystal symmetry is tetragonal (space group P42/mnm, a = 1.0194 nm, c = 0.5313 nm), Knoop hardness is 1000–1300 HN and electrical resistivity is relative.

The beta phase is metastable and converts to the alpha phase upon heating to 750–775 °C. Bulk tantalum is almost entirely alpha phase, and the beta phase usually exists as thin films obtained by magnetron sputtering, chemical vapor deposition or electrochemical deposition from a eutectic molten salt solution

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Tantalum Pentoxide Powder

Product Name: Tantalum Pentoxide Powder

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