{"id":133,"date":"2017-12-30T00:12:56","date_gmt":"2017-12-29T21:12:56","guid":{"rendered":"https:\/\/metallsmaster.ru\/?p=133"},"modified":"2020-11-02T12:05:11","modified_gmt":"2020-11-02T09:05:11","slug":"iridij","status":"publish","type":"post","link":"https:\/\/metallsmaster.pro\/en\/iridij\/","title":{"rendered":"Iridium"},"content":{"rendered":"

At the beginning of the 19th century, the chemical element was discovered iridium, <\/strong>Mendeleev's periodic table with atomic number 77. It is a very hard, silvery-white metal with high refractoriness and density. Its high corrosion resistance at temperatures of 2000\u00b0C is also impressive.0<\/sup>S. These parameters made them famous iridium, <\/strong>and it finds special application in different fields.<\/p>\n

In Greek, iridium literally means rainbow. Its occurrence in the Earth's crust is very low. Iridium is a rare metal; gold and platinum are more common. Its primary source is copper-nickel production waste\u2014anode sludge. There are various other methods for obtaining it. iridium metal, <\/strong>which involve very complex chemical-technological production processes. These methods of producing this metal are quite expensive and, accordingly, very costly.<\/p>\n

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Properties of iridium<\/h2>\n

Physical properties of iridium <\/strong>are quite impressive. It is a very hard, heavy metal that is difficult to machine. Its melting point is 24660<\/sup>C, has a fairly high boiling point of 44280<\/sup>C. Its hardness is determined by its density - 22.65 g\/cm3<\/sup>It is stable at temperatures up to 100\u00b0C and is heated at normal temperatures.0<\/sup>It does not react with all known acids. In the presence of alkali metal chlorides at a temperature of 600-9000<\/sup>Iridium powder can be dissolved by chlorination. It reacts with F2,<\/sub> when the temperature reaches 4500<\/sup>WITH. Properties of iridium <\/strong>do not play any biological role, it is not a toxic metal, although some of its compounds are very poisonous.<\/p>\n

Iridium indicators:<\/p>\n

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  • Alloys of iridium with tungsten and thorium are used as a metal for thermoelectric generators; with other metals, they are used to make fuel tanks for spacecraft, thermocouples, and thermionic cathodes;<\/li>\n
  • in the automotive industry they are used in spark plugs, which allows them to be used for a long time, although they are expensive;<\/li>\n
  • finds its application in the production of fountain pens, on gold nibs;<\/li>\n
  • Iridium-192 is successfully used in flaw detection, where generating sources cannot be used, for example, in explosive environments;<\/li>\n
  • It is interesting that the kilogram standard is made of iridium, since the alloy of iridium and platinum has mechanical strength and does not oxidize;<\/li>\n
  • It is used in the jewelry industry, but the price for such jewelry is incredibly high;<\/li>\n
  • laboratory crucibles are made to conduct experiments with fluorine and its aggressive compounds;<\/li>\n
  • They make high-strength, heat-resistant glass blowing dies.<\/li>\n<\/ul>\n

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    Price of iridium<\/h3>\n

    Iridium mining is a very complex and labor-intensive process, with annual production reaching 3 tons, a very low figure compared to other precious metals. Its prices fluctuate from time to time. Price of iridium <\/strong>35 US dollars per gram. In 2009 it was 200 US dollars per gram. Price of iridium <\/strong>As of 2016, it was 32$ per gram. Iridium rightfully justifies its place as a precious metal worthy of respect.<\/p>\n

    \"iridium\"\"price<\/p>\n

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    \u00a0<\/strong><\/p>","protected":false},"excerpt":{"rendered":"

    At the beginning of the 19th century, the chemical element iridium was discovered in D.I. Mendeleev's periodic table\u2026<\/p>","protected":false},"author":1,"featured_media":134,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-133","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blagorodnye-metally"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t