{"id":7688,"date":"2018-05-10T15:20:39","date_gmt":"2018-05-10T15:20:39","guid":{"rendered":"https:\/\/www.experimentoscientificos.es\/?page_id=7688"},"modified":"2018-11-21T11:06:35","modified_gmt":"2018-11-21T11:06:35","slug":"niquel","status":"publish","type":"page","link":"https:\/\/www.experimentoscientificos.es\/en\/niquel\/","title":{"rendered":"Nickel"},"content":{"rendered":"

Nickel is the 28th element of the periodic table<\/a>. Your atom<\/a> has an atomic weight of 58 and its symbol is\u00a0Ni<\/b>located in group 10. Nickel is not only a well-known metal, part of stainless steel, but also has an important biological role, since 87 % of the hydrogenase enzymes, which are involved in metabolism, contain nickel.<\/p>\n

PHYSICO-CHEMICAL PROPERTIES OF NI<\/h2>\n

Atomic mass:<\/strong> 58,71 u
\nDensity<\/a>:<\/strong> 8908 kg\/m3
\nAtomic radius (calc)<\/strong>149 pm (Bohr radius)
\nGroup, period, block:<\/strong>\u00a010, 4, d
\nName, symbol, number: <\/strong>Nickel, Ni, 28
\nOrdinary state: Solid
\n<\/strong>Boiling point<\/a>: <\/strong>2730 K (2457 \u00b0C)
\nMelting point<\/a>:<\/strong> 1728 K (1455 \u00b0C)<\/p>\n

n\u00baCAS:\u00a0<\/strong>7440-02-0
\nEINECS no: <\/strong>231-111-4<\/p>\n

MAIN CHARACTERISTICS<\/h2>\n

Nickel is a white transition metal. It conducts electricity and heat. Nickel is a ductile and malleable material that can be easily rolled and polished. It is ferromagnetic at room temperature. Transition metals are metals that can be stable on their own without reacting with another element. The missing electrons in the last valence layer are extracted from inner layers. It is a very dense material, like iron, iridium and osmium. It is found in various minerals, in meteorites (alloyed with iron) and nickel is found in the earth's interior. It is the second most abundant metal after iron, with which it has many similarities.<\/p>\n

Nickel is alloyed with iron in steel to improve the properties of stainless steel. Nickel is a corrosion-resistant metal and is therefore often used as a coating, by electrodeposition. See section on Nickel-plating<\/a>. Nickel is one of the most cost-effective base metals. Nickel is an essential metal for industry and one of the most demanded metals. The good properties of nickel are that it reacts with difficulty in corrosive and aggressive media. Nickel is resistant to the galling effect, an effect whereby oxygen in the air is absorbed by the metal at high temperatures forming bubbles, and as the metal cools, the air is released creating a large number of small pores. Copper, for example, does suffer from this effect.<\/p>\n

Its common oxidation state is +2. Oxidation states 0, +1 and +3 have been observed in some compounds, but are very uncharacteristic.<\/p>\n

USES OF NICKEL<\/h2>\n

Approximately the 70% of the\u00a0nickel<\/strong>\u00a0in industry is used in the manufacture of stainless steel<\/a>. The other 30% would be used for alloys with other metals, coinage, rechargeable batteries, magnets, robotics. Nickel is widely used in today's jewellery and kitchenware.<\/p>\n

\"NIQUEL\"\"Niquel\"<\/p>\n

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LEATHERING<\/h2>\n

The\u00a0electroless nickel plating<\/strong>\u00a0(NiP) is a treatment on metals in which a phosphorus-alloyed nickel is chemically deposited on the surface of another metal such as aluminium and its alloys, stainless steel, carbon steel alloys, copper and alloys and certain non-conductors.<\/p>\n

Electroless nickel plating is characterised by a uniform layer thickness, even on complex parts and interior surfaces. In addition, the surfaces are characterised by a very high hardness, good pull-out resistance and excellent corrosion protection.<\/p>\n

    \n
  • Nickel sulphate<\/li>\n
  • Nickel chloride<\/li>\n
  • Boric acid and humectant<\/li>\n<\/ul>\n

    Bright nickel plating is carried out with a bath of the same composition as above, to which a brightener is added, e.g. saccharin. To obtain the mirror quality, the base plate must be polished to this quality. The optimum working temperature is between 40 and 50 \u00baC, but it can work well at room temperature.<\/p>\n

    In nickel plating baths, a nickel anode is used which dissolves as nickel is deposited on the cathode. Therefore, the concentration of salts in the bath should in theory not vary and these baths can be active for a long time without the addition of salts.<\/p>","protected":false},"excerpt":{"rendered":"

    Nickel is the 28th element in the periodic table. Its atom has an atomic weight of 58 and its symbol is Ni, located in group 10. Nickel is not only a well-known metal, part of stainless steel, but also has an important biological role, as 87 % of the enzymes hydrogenases, which are involved in the production of [...]<\/p>","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"acf":[],"yoast_head":"\nN\u00edquel<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.experimentoscientificos.es\/en\/niquel\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"N\u00edquel\" \/>\n<meta property=\"og:description\" content=\"El n\u00edquel es el elemento n\u00famero 28\u00a0 de la tabla peri\u00f3dica. 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