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cobalt    音标拼音: [k'ob,ɔlt]
n. 钴,钴类颜料,由钴制的深蓝色

钴,钴类颜料,由钴制的深蓝色

cobalt
n 1: a hard ferromagnetic silver-white bivalent or trivalent
metallic element; a trace element in plant and animal
nutrition [synonym: {cobalt}, {Co}, {atomic number 27}]

Cobalt \Co"balt\ (k[=o]"b[o^]lt; 277, 74), n. [G. kobalt, prob.
fr. kobold, kobel, goblin, MHG. kobolt; perh. akin to G.
koben pigsty, hut, AS. cofa room, cofgodas household gods,
Icel. kofi hut. If so, the ending -old stands for older
-walt, -wald, being the same as -ald in E. herald and the
word would mean ruler or governor in a house, house spirit,
the metal being so called by miners, because it was poisonous
and troublesome. Cf. {Kobold}, {Cove}, {Goblin}.]
1. (Chem.) A tough, lustrous, reddish white metal of the iron
group, not easily fusible, and somewhat magnetic. Atomic
weight 59.1. Symbol Co.
[1913 Webster]

Note: It occurs in nature in combination with arsenic,
sulphur, and oxygen, and is obtained from its ores,
smaltite, cobaltite, asbolite, etc. Its oxide colors
glass or any flux, as borax, a fine blue, and is used
in the manufacture of smalt. It is frequently
associated with nickel, and both are characteristic
ingredients of meteoric iron.
[1913 Webster]

2. A commercial name of a crude arsenic used as fly poison.
[1913 Webster]

{Cobalt bloom}. Same as {Erythrite}.

{Cobalt blue}, a dark blue pigment consisting of some salt of
cobalt, as the phosphate, ignited with alumina; -- called
also {cobalt ultramarine}, and {Thenard's blue}.

{Cobalt crust}, earthy arseniate of cobalt.

{Cobalt glance}. (Min.) See {Cobaltite}.

{Cobalt green}, a pigment consisting essentially of the
oxides of cobalt and zinc; -- called also {Rinman's
green}.

{Cobalt yellow} (Chem.), a yellow crystalline powder,
regarded as a double nitrite of cobalt and potassium.
[1913 Webster]

cobalt
Symbol: Co
Atomic number: 27
Atomic weight: 58.993
Light grey transition element. Some meteorites contain small amounts of
metallic cobalt. Generally alloyed for use. Mammals require small
amounts
of cobalt salts. Cobalt-60, an artificially produced radioactive isotope
of Cobalt is an important radioactive tracer and cancer-treatment agent.
Discovered by G. Brandt in 1737.


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  • Home | Cobalt Credit Union
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  • Cobalt | Uses, Properties, Facts | Britannica
    Cobalt, metallic chemical element, one of the transition elements, atomic number 27 The metal is used especially for heat-resistant and magnetic alloys A relatively large percentage of the world’s production goes into magnetic alloys such as the Alnicos for permanent magnets
  • Cobalt | History, Uses, Facts, Physical Chemical Characteristics
    Cobalt is transition metal and was discovered in pure form in 1735 It is essential part of vitamin B 12 Its compounds are known as cobalt blue used to color pottery and glass
  • Cobalt Miners News For The Month Of June 2025 | Seeking Alpha
    Summary Cobalt spot prices were slightly lower in the past month Cobalt market news - DRC prepares for a new decision on cobalt export ban in June $2 5B in the 2025 Budget Reconciliation Bill
  • Cobalt - Element information, properties and uses | Periodic Table
    There are several front runners for vastly varying reasons; however, always a top contender has to be cobalt because it excels in several important character traits: Cobalt has amazing beauty and strength, as well as great cooperation
  • Cobalt Definition, Facts, Symbol, Discovery, Property, Uses
    Cobalt (pronunciation: KO-bolt) is a hard, lustrous silvery-blue element belonging to the group of transition metals, and it is represented by the chemical symbol Co [1, 2, 3] It is chemically active and can form many compounds [4]
  • Cobalt - New World Encyclopedia
    Cobalt (chemical symbol Co, atomic number 27) is a hard, lustrous, silver-gray metal It is found in various ores and is important as a trace element in the human body It is used in the preparation of wear-resistant, high-strength alloys , magnetic media, and battery electrodes
  • Cobalt - American Elements
    Cobalt found in cobalamin, also known as vitamin B12, is an essential nutrient, but excess free cobalt ions in the body have toxic effects Cobalt is also used in other alloy applications It is found in both Alnico and samarium-cobalt magnets, both of which are used widely in industry
  • Cobalt (Co) - Definition, Preparation, Properties, Uses, Compounds . . .
    Cobalt, a transition metal nestled in the heart of the periodic table, is pivotal to modern technology and green energy solutions This guide uncovers the multifaceted roles cobalt plays, from its use in rechargeable batteries to its significance in alloy production
  • Cobalt - HyperPhysics
    Cobalt is a silvery-white metal, with a slight reddish tinge It occurs in the minerals smaltite and safflorite with the composition CoAs 2 Cobalt also forms an arsenide with the content CoAs 2-3 which is called skutterudite





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