Powder T1 tellurium

Tellurium — brittle silver-white substance with metal gloss. In thin coats on a gleam red-brown, in couples — golden-yellow. Key properties it tellura:kristallizutsya in hexagonal system: and = 4,4570Å; with = 5,9290Å; density is 6,25 g/cm3 at 20 "With; tpl450 °C; tkip of 990 °C; specific heat capacity at 20 °C 0,204 kJ / (kg • J) [0,047 kcal / (• °C)]; heat conductivity at 20 °C 5,999 W / (m • J) [0,014 kcal / (cm • sec. • °C)]; temperature coefficient of linear expansion 1,68•10-5 (20 °C); tellurium diamagniten; a specific magnetic susceptibility at 18 °C-0,31•10-6; hardness according to Brinell of 184,3 Mnm2 (18,43 kgfs/mm2); atomic radius is 1,7 Å, ionic radiuses: Te2 - 2,22 Å, Te4 + 0,89 Å, Te6 + 0,56 Å.Теллур - the semiconductor. Width of the prohibited zone 0,34 ev. At usual conditions and up to melting temperature pure Tellurium has conductivity of p-type. To fall of temperature in an interval (-100 °C) - (-80 °C) there is a transition: conductivity of Tellurium becomes n-type. Temperature of this transition depends on purity of a sample, and it that is lower, than the sample is purer. Powder T1 tellurium available. We work across all Russia and the CIS countries. Use tellura:v production of lead alloys with the increased plasticity and durability, At introduction of 0,05% of tellurium of loss of lead for dissolution under the influence of sulphuric acid decrease by 10 times, and it is used by production of acid accumulators; in production of semi-conductor materials and, in particular, lead tellurides, bismuth, antimony, caesium; for narrow-band semiconductors; in the course of rubber curing; production of chalcogenide glasses - some glasses on the basis of tellurium are semiconductors that, in turn, has found Use in designing of the special chemical equipment; for production of lamps with its couples — they have the range very close to solar; in re-recorded compact disks for creation of the deformable reflecting layer. You can specify the actual price at our manager. Buy Powder T1 tellurium legko:1. You send zayavku2. We expose to you schet3. You pay convenient for you sposobom4. You receive the goods the Most important that you need to know about the BVB-alliance company. • Deliverable metal rolling constantly is available, and is stored "about 2000 tons" in a warehouse. • Own production of a professional flooring. • We offer a payment delay "about one month". • We do everything possible for minimization of terms of processing and delivery. • We carry out metal cutting in the size and according to your drawings. • We provide service of safe custody in the covered warehouse. • We offer the loyalty program allowing to receive discounts for purchase, processing or delivery of metal rolling. Advantages of work with nami:1. Goods available on sklade2. Official garantiya3. High quality tovarov4. Operational dostavka5. The program T1 tellurium you can specify the loyalnostiaktualny price of Powder at our manager. The final price of products forms, proceeding from terms of delivery: quantity, terms of payment and place of shipment. Ask the manager. This price list has exclusively information character and under no circumstances is not the public offer determined by provisions of the p. 2 of Art. 437 of the Civil code of the Russian Federation.

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