Tellurium metal particles are solid particles composed of the element tellurium, which have a metallic lustre and are chemically active, and play an important role in many fields such as semiconductors, thermoelectric materials, and chemicals.
Characteristics
Appearance: Pure tellurium metal particles are silvery-white in colour, but commonly seen tellurium metal particles may be dark grey in colour due to the presence of small amounts of impurities.
Form: Generally in granular form, the exact size of the granules can be processed according to the production requirements, the common specifications are 0.5-2 mm, 1-5 mm and so on.
Hardness: Tellurium metal is a brittle material with relatively low hardness, which makes it easy to be crushed or broken during processing and use.
Density: At 20°C, the density is approximately 6.24 g/cm3 , which is relatively dense and provides an advantage in applications where the density of the material is required.
Melting point: melting point of 450 ℃, belongs to the medium melting point of the metal, in the heating process needs to reach the temperature to make it melt.
Boiling point: The boiling point is high, about 988℃.
Crystal structure: There are two isomers, crystalline and amorphous. Crystalline tellurium has a rhombohedral crystal system structure.
Reactivity: Tellurium metal is relatively chemically stable and does not react with water at room temperature, but reacts with oxygen under heated conditions to form tellurium oxide. When heated and melted in air, white smoke of tellurium oxide is produced.
Acidity and alkalinity: insoluble in alkali, but soluble in strong acids such as concentrated sulphuric acid, nitric acid and aqua regia.
Compound formation: It can form compounds with many elements, such as telluride, halide, oxygen group compounds and organic tellurium compounds.
Conductivity: tellurium is a semiconductor material with conductivity between conductors and insulators, a property that makes tellurium valuable in electronics, optoelectronics, and other applications.
Isotopes: There are eight stable isotopes of tellurium in nature, namely, tellurium-120, tellurium-122, tellurium-123, tellurium-124, tellurium-125, tellurium-126, tellurium-128, and tellurium-130.
Applications
In alloys:
Improvement of metal machinability: the addition of tellurium metal particles to copper and stainless steel enhances the machinability of the alloys, making them easier to perform machining operations such as bending, cutting, shaping, and turning. For example, copper alloys containing tellurium are widely used in some precision machining operations.
Enhance the performance of lead: added to lead can reduce the corrosiveness of lead, while increasing the strength and hardness of lead, which can be used in the manufacture of lead-acid batteries, such as the grid plate and other components, to improve the performance and service life of the battery.
Semiconductor and electronics industry:
Preparation of semiconductor materials: it can be used to prepare Ⅱ-VI compound semiconductors, such as cadmium telluride (CdTe) is an important semiconductor material, which is widely used in solar cells, infrared detectors and other fields. CdTe solar cells have high photoelectric conversion efficiency and low cost, and are one of the more rapidly developing solar cell technologies.
Microelectronics industry: used in microelectronics industry sputtering target and ion coating, evaporation coating, etc. In the process of semiconductor chip manufacturing, tellurium thin film can be deposited on the chip surface by sputtering tellurium target, which is used to improve the electrical performance of the chip or as a functional layer of some special devices.
Chemical field:
Rubber vulcanising agent: as an additive in the vulcanisation process of rubber, it can improve the properties of rubber such as heat resistance, abrasion resistance and strength, making rubber products more durable. For example, tellurium metal particles are used as one of the components of vulcanising agent in the production of automobile tyres and rubber seals.
Catalyst for oil cracking: in oil processing, as one of the components of catalyst, it helps to improve the efficiency of oil cracking and increase the production of gasoline, diesel and other fuels.
Other fields:
Glass and ceramics industry: as a colouring agent in the production of glass and ceramics, it can give the glass and ceramics unique colour and optical properties. For example, in the production of some art glass and high-grade ceramic products, tellurium is added to obtain special colour effects.
Carbon fixing cup material: It is used in analytical instruments such as carbon fixing cups and plays an important role in the analysis of carbon content in the iron and steel, metallurgy and other industries.
Nuclear Radiation Detection: As tellurium has a certain ability to detect nuclear radiation, it can be used in the manufacture of equipment such as nuclear radiation detectors, which are used to detect and measure the intensity and energy of nuclear radiation.
VI HALBLEITERMATERIAL GmbH (VIMATERIAL) employs a stringent quality assurance system to ensure the reliability of our product quality. Strict quality control is implemented throughout the entire production chain, and for defective products, we strictly enforce the principle of rework and redo. Each batch is released only after passing detailed specification tests.
Every batch of our materials is independently tested, and, if necessary, we send samples to certified companies for testing. We provide these documents and analysis certificates with the shipment to certify that our products meet the required standards.
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