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Zirconium is a good nuclear fuel-rod cladding metal, with the desirable properties of a very low neutron capture cross-section and good chemical stability at high temperatures.
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Zirconium and is
Zirconium ( ) is a chemical element with the symbol Zr, atomic number 40 and atomic mass of 91. 224.
Zirconium is mainly used as a refractory and opacifier, although minor amounts are used as alloying agent for its strong resistance to corrosion.
Zirconium is a lustrous, greyish-white, soft, ductile and malleable metal which is solid at room temperature, though it becomes hard and brittle at lower purities.
Zirconium is highly resistant to corrosion by alkalis, acids, salt water and other agents.
Zirconium is a by-product of the mining and processing of the titanium minerals ilmenite and rutile, as well as tin mining.
Zirconium oxide powder is heated then gradually allowed to cool.
Zirconium is one of the main components of zircon crystals, currently the oldest known minerals in the earth's crust.
Zirconium is practically transparent to free neutrons, used in building reactors, but hafnium is a very strong absorber of neutrons, used in reactor control rods.
Zirconium is practically transparent to free neutrons, used in building reactors, but hafnium is a very strong absorber of neutrons, used in reactor control rods.
Perhaps one of the most studied materials to exhibit negative thermal expansion is Cubic Zirconium Tungstate ( ZrW < sub > 2 </ sub > O < sub > 8 </ sub >).
Zirconium is the heaviest element that can be formed from symmetric fusion, from either < sup > 45 </ sup > Sc, or < sup > 46 </ sup > Ca producing < sup > 90 </ sup > Zr ( after two beta-plus decays from < sup > 90 </ sup > Mo ) and < sup > 92 </ sup > Zr respectively.
Zirconium and nuclear
Upon loss of coolant the decay heat can raise the rods above 2200 degrees Celsius, whereupon the hot Zirconium alloy metal used for casing the nuclear fuel rods spontaneously explodes in contact with the cooling water or steam, which leads to the separation of water into its constituent elements ( hydrogen and oxygen ).
Zirconium and with
Scalpel blades are also offered by select manufacturers with a Zirconium Nitride coated edge to improve sharpness and edge retention.
Zirconium and .
Zirconium forms a variety of inorganic and organometallic compounds such as zirconium dioxide and zirconocene dichloride, respectively.
Zirconium compounds have no biological role.
Zirconium has an electronegativity of 1. 33 on the Pauling scale.
Zirconium exists in the β-phase until the melting point.
Zirconium has a concentration of about 130 mg / kg within the Earth's crust and about 0. 026 μg / L in sea water.
Zirconium also occurs in more than 140 other minerals, including the commercially useful ores baddeleyite and kosnarite.
DD53 Methods have been developed for generating on-axis beams, either by field-induced emitter build-up, or by selective deposition of a low-work-function adsorbate ( usually Zirconium oxide-ZrO ) into the flat apex of a ( 100 ) oriented Tungsten emitter.
Zirconium, calcium, and rare earth elements are added for sulfide-inclusion shape control which increases formability.
" The Crystal Structure of Thorium and Zirconium Dihydrides by X-ray and Neutron Diffraction ", Ames Laboratory, Oak Ridge National Laboratory ( ORNL ), United States Department of Energy ( through predecessor agency the Atomic Energy Commission ), ( Apr.
File: Zr-crystal-bar. jpg | Zirconium crystal bar
is and good
`` No telling how good this horse is '', Mike panted.
`` But to take him and leave his mother behind is not good ''.
( The best evidence is that he received a monthly wage of about $125, very good money in an era when top hands worked for $30 and found.
It is not good, Mr. Waddell: you will do him great harm ''.
`` Billy Tilghman is too good a man to shoot in the back.
Though sex in some form or other enters into all human activity and it was a good thing that Freud emphasized this aspect of human nature, it is fantastic to explain everything in terms of sex.
Jazz is good not only because it promotes wholeness but because of its decided sexual effect.
If he is the child of nothingness, if he is the predestined victim of an age of atomic wars, then he will consult only his own organic needs and go beyond good and evil.
These desires presuppose a sense of causally efficacious powers in which one is involved, some working for one's good, others threatening ill.
The line is a pretty good one.
The basic premise of all mystery stories is that the distinction between good and bad coincides with the distinction between legal and illegal.
If he is good, he may not be legal ; ;
if he is legal, he may not be good.
They for their part are convinced that Holmes is too `` unorthodox '' and `` theoretical '' to make a good detective.
Man, we are told, is endowed with reason and is capable of distinguishing good from bad.
It is a total situation that is defended: the `` good old days ''.
Even if people do, in a not far distant future, begin to read one another's minds, there will still be the question of whether what you find in another man's mind is especially worth reading -- worth more, that is, than what you can read in good books.
He is a dreamer of the good society with a plan to put into effect, and he is an individual craftsman with something to make for himself and the people of his time.
This is the good kind of sophistication, and with all our problems and crises this kind of sophistication has flowered in the United States during recent years.
She is not only a trained mathematician and Classicist, but a good architect.
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