Cobalt Niobium Zirconium Alloy is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.
Cobalt is a Block D, Group 9, Period 4 element. The number of electrons in each of Cobalt's shells is 2, 8, 15, 2 and its electronic configuration is [Ar] 3d7 4s2. In its elemental form cobalt's CAS number is 7440-48-4. The cobalt atom has a radius of 125.3.pm and it's Van der Waals radius is 200.pm. Cobalt and its compounds are somewhat toxic by skin contact and moderately toxic by inhalation. Cobalt has a metallic permeability two thirds that of iron. It exists as a mixture of two allotropes over a wide temperature range. The transformation is slow and accounts in part for the wide variation in the physical properties of cobalt. It is alloyed with iron, nickel and other metals to make Alnico, an alloy of unusual magnetic strength with many important uses. Samarium-cobalt is one of the highest strength magnet alloys known. Cobalt compounds produce a brilliant and permanent blue color in ceramic glazes, glass, pottery, tiles, and enamels. Co-60 is useful as a gamma ray source. Toxicity of cobalt and its compounds are mild by skin contact and moderate by ingestion. Cobalt is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Cobalt was first discovered by George Brandt in 1737. The origin of the word Cobalt comes from the German word 'Kobalt or Kobold' which translates as "goblin", "elf" or "evil spirit". See Cobalt research below.
Niobium is a Block D, Group 5, Period 5 element. The number of electrons in each of Niobium's shells is 2, 8, 18, 12, 1 and its electronic configuration is [Kr] 4d4 5s1. In its elemental form niobium's CAS number is 7440-03-1. The niobium atom has a radius of 142.9.pm and it's Van der Waals radius is 200.pm. Some niobium compounds are considered very toxic. Niobium is the basis for various barium titanate compositions used as dielectric coatings in telecommunications and small advanced electronics, such as cell phones, pagers and laptop computers. Niobium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Niobium has medical research applications. It is alloyed to produce arc-welding rods and in corrosion-resistant steel. Niobium was first discovered by Charles Hatchett in 1801. The word Niobium originates from Niobe, daughter of mythical Greek king Tantalus. See Niobium research below.
Zirconium is a Block D, Group 4, Period 5 element. The number of electrons in each of Zirconium's shells is 2, 8, 18, 10, 2 and its electronic configuration is [Kr] 4d2 5s2. In its elemental form zirconium's CAS number is 7440-67-7. The zirconium atom has a radius of 159.pm and it's Van der Waals radius is 200.pm. Zirconium is non-toxic. Zirconium’s principal mineral is zircon (Zirconium Silicate) and is primarily used in its oxide or zirconia form. Zirconium dioxide has a high melting point (2,700° C) and a low thermal conductivity. Its polymorphism, however, restricts its widespread use in ceramic industry. During a heating process, zirconia will undergo a phase transformation process. The change in volume associated with this transformation makes the usage of pure zirconia in many applications impossible. Addition of some oxides, such as CaO, MgO, and Y2O3, into the zirconia structure in a certain degree results in a solid solution, which is a cubic form and has no phase transformation during heating and cooling. This solid solution material is termed as stabilized zirconia, a valuable refractory. Stabilized zirconia is used as a grinding media and engineering ceramics due to its increased hardness and high thermal shock resistivity. Stabilized zirconia is also used in applications such as oxygen sensors and solid oxide fuel cells due to its high oxygen ion conductivity.Zirconium was first discovered by William Gregor in 1791. The name Zirconium originated from the Persian word 'zargun' meaning gold color or gold-like. See Zirconium research below.
Tetra-kis(3-cyano-pyridine-?N)bis-(thio-cyanato-?N)cobalt(II) 1,4-dioxane disolvate.
Diehr S, Wöhlert S, Boeckmann J, Näther C.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1898. Epub 2011 Nov 30.
PMID:
22199656
[PubMed - as supplied by publisher]
Bis(2,4-dioxo-5,5-diphenyl-imidazol-idin-ido-?N)bis-(propane-1,3-diamine-?N,N')cobalt(II).
Hu X, Jiang Q, Wang D, Liu H.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1885. Epub 2011 Nov 30.
PMID:
22199646
[PubMed - as supplied by publisher]
Poly[aqua-{?(3)-5-[(pyridin-2-ylmeth-yl)amino]-isophthalato-?N,N':O,O:O}cobalt(II)].
Zhu XH, Cheng XC.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1862. Epub 2011 Nov 30.
PMID:
22199630
[PubMed - as supplied by publisher]
catena-Poly[[[cis-aqua-dibromido-cobalt(II)]-?-(pyrazine-2-carb-oxy-lic acid)-?N,O:N] monohydrate].
Dares C, Fournier R, Lever AB.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1798-m1799. Epub 2011 Nov 23.
PMID:
22199583
[PubMed - as supplied by publisher]
Poly[di-?(2)-aqua-?(5)-(pyridine-2,6-dicarboxyl-ato)-?(3)-(pyridine-2,6-dicarboxyl-ato)-cobalt(II)disodium].
Boyko AN, Golenya IA, Izotova YA, Haukka M, Prisyazhnaya EV.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1782-m1783. Epub 2011 Nov 19.
PMID:
22199572
[PubMed - as supplied by publisher]
Diaqua-bis-(pyridine-2-sulfonato-?N,O)cobalt(II).
Li ZS, Ng SW.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1781. Epub 2011 Nov 19.
PMID:
22199571
[PubMed - as supplied by publisher]
Bis[tris-(ethyl-enediamine-?N,N')cobalt(III)] octa-kis-?-(3)-oxido-hexa-deca-?(2)-oxido-tetra-deca-oxido-?(12)-tetra-oxo-silicato-octa-molybdenum(VI)hexa-vanadium(IV,V) hexa-hydrate.
Lu YK, Tian MM, Xu SG, Lü RQ, Liu YQ.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1776-m1777. Epub 2011 Nov 19.
PMID:
22199568
[PubMed - as supplied by publisher]
Tetra-aqua-bis-(2-{[5-(pyridin-4-yl)-1,3,4-oxadiazol-2-yl]sulfan-yl}acetato)-cobalt(II) monohydrate.
Yang GR, Li GT.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1746-m1747. Epub 2011 Nov 12.
PMID:
22199545
[PubMed - as supplied by publisher]
Tetra-aqua-bis-[3-(pyridin-4-yl)benzoato-?N]cobalt(II).
Wang HR, Li GT.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1743. Epub 2011 Nov 12.
PMID:
22199542
[PubMed - as supplied by publisher]
Poly[[tetra-aqua-(?(4)-imidazole-4,5-dicarboxyl-ato)(?(3)-imidazole-4,5-dicarboxyl-ato)-?(3)-sulfato-?(2)-sulfato-cobalt(II)digadolinium(III)] monohydrate].
Zhu LC.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1741-m1742. Epub 2011 Nov 12.
PMID:
22199541
[PubMed - as supplied by publisher]
Hexaaqua-cobalt(II) bis-(5-acetyl-2-hy-droxy-benzoate) dihydrate.
Han LJ, Yang SP, Fu LL, Gao HL.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1733. Epub 2011 Nov 9.
PMID:
22199535
[PubMed - as supplied by publisher]
Dichlorido[(4E,11E)-5,7,12,14-tetra-benzyl-7,14-dimethyl-1,4,8,11-tetra-aza-cyclo-tetra-deca-4,11-diene]cobalt(III) perchlorate.
Roy TG, Hazari SK, Barua KK, Ng SW, Tiekink ER.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1722-m1723. Epub 2011 Nov 9.
PMID:
22199529
[PubMed - as supplied by publisher]
{1,2-Bis[(3,5-dimethyl-1H-pyrazol-1-yl-?N)meth-yl]benzene}-dichloridozinc(II).
Guzei IA, Spencer LC, Budhai A, Darkwa J.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1715-m1716. Epub 2011 Nov 9.
PMID:
22199525
[PubMed - as supplied by publisher]
catena-Poly[[bis-(2,4-dichloro-benzoato)bis-(methanol-?O)cobalt(II)]-?-4,4'-bipyridine-?N:N'].
Hyun MY, Kim PG, Kim C, Kim Y.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1705. Epub 2011 Nov 9.
PMID:
22199519
[PubMed - as supplied by publisher]
Bis(pentane-2,4-dionato-?O,O')(1,10-phenanthroline-?N,N')cobalt(II).
Perdih F.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1697. Epub 2011 Nov 5.
PMID:
22199513
[PubMed - as supplied by publisher]
Diaqua-bis-(dihydrogen 3-aza-niumyl-1-hy-droxy-propyl-idene-1,1-di-phos-phon-ato-?O,O')cobalt(II).
Tsaryk NV, Dudko AV, Kozachkova AN, Pekhnyo VI.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1694. Epub 2011 Nov 5.
PMID:
22199511
[PubMed - as supplied by publisher]
Tetra-aqua-bis-{3-carb-oxy-5-[(4-carb-oxy-phen-yl)diazen-yl]benzoato-?O}cobalt(II) dihydrate.
Bai L, Zhao J.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1689. Epub 2011 Nov 5.
PMID:
22199506
[PubMed - as supplied by publisher]
Tetra-aqua-bis-(2-methyl-1H-imidazole-?N)cobalt(II) naphthalene-1,5-disulfonate.
Jin Y.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1686. Epub 2011 Nov 5.
PMID:
22199503
[PubMed - as supplied by publisher]
Diaqua-bis-(dimethyl sulfoxide-?O)bis(saccharinato-?N)cobalt(II).
Potwana FS, Van Zyl WE.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1667-m1668. Epub 2011 Nov 5.
PMID:
22199492
[PubMed - as supplied by publisher]
Pulmonary toxicity after exposure to military-relevant heavy metal tungsten alloy particles.
Roedel EQ, Cafasso DE, Lee KW, Pierce LM.
Toxicol Appl Pharmacol. 2011 Dec 16. [Epub ahead of print]
PMID:
22198552
[PubMed - as supplied by publisher]
Directly Hydrothermal Growth of Single Crystal Nb(3) O(7) (OH) Nanorod Film for High Performance Dye-Sensitized Solar Cells.
Zhang H, Wang Y, Yang D, Li Y, Liu H, Liu P, Wood BJ, Zhao H.
Adv Mater. 2012 Feb 22. doi: 10.1002/adma.201104650. [Epub ahead of print]
PMID:
22354561
[PubMed - as supplied by publisher]
Synthesis of Nine-atom Deltahedral Zintl Ions of Germanium and their Functionalization with Organic Groups.
Gillett-Kunnath MM, Sevov SC.
J Vis Exp. 2012 Feb 11;(60). pii: 3532. doi: 10.3791/3532.
PMID:
22349121
[PubMed - in process]
A highly reduced cyanogen ligand derived from cyanide reductive coupling.
Fox AR, Cummins CC.
Chem Commun (Camb). 2012 Feb 27;48(25):3061-3. Epub 2012 Feb 17.
PMID:
22343665
[PubMed - in process]
Diffusion and segregation of niobium in fcc-nickel.
Connétable D, Ter-Ovanessian B, Andrieu E.
J Phys Condens Matter. 2012 Mar 7;24(9):095010. Epub 2012 Feb 9.
PMID:
22322788
[PubMed - in process]
Measurement of mass attenuation coefficients of Rhizophora spp. binderless particleboards in the 16.59-25.26keV photon energy range and their density profile using x-ray computed tomography.
Marashdeh MW, Bauk S, Tajuddin AA, Hashim R.
Appl Radiat Isot. 2012 Apr;70(4):656-62. Epub 2012 Jan 20.
PMID:
22304963
[PubMed - in process]
Syntheses and Structures of Sc(2)Nb(4-x)Sn(5), YNb(6)Sn(6), and ErNb(6)Sn(5): Exploratory Studies in Ternary Rare-Earth Niobium Stannides.
Yue CY, Lei XW.
Inorg Chem. 2012 Feb 20;51(4):2461-71. Epub 2012 Feb 2.
PMID:
22300353
[PubMed - in process]
Highly efficient catalysts for Co(ii/iii) redox couples in dye-sensitized solar cells.
Wang L, Diau EW, Wu M, Lu HP, Ma T.
Chem Commun (Camb). 2012 Feb 8;48(20):2600-2. Epub 2012 Feb 1.
PMID:
22294206
[PubMed - in process]
Seeded growth induced amorphous to crystalline transformation of niobium oxide nanostructures.
Jana S, Rioux RM.
Nanoscale. 2012 Mar 7;4(5):1782-8. Epub 2012 Jan 30.
PMID:
22286141
[PubMed - in process]
Adhesive Bonding of Ti-6Al-7Nb Alloy and Component Metals with Acidic Primers and a Tri-n-butylborane Initiated Resin.
Koizumi H, Naito K, Ishii T, Yamashita M, Yoneyama T, Matsumura H.
J Adhes Dent. 2012 Jan 11. doi: 10.3290/j.jad.a22712. [Epub ahead of print]
PMID:
22282753
[PubMed - as supplied by publisher]
Low-loss terahertz metamaterial from superconducting niobium nitride films.
Zhang CH, Wu JB, Jin BB, Ji ZM, Kang L, Xu WW, Chen J, Tonouchi M, Wu PH.
Opt Express. 2012 Jan 2;20(1):42-7. doi: 10.1364/OE.20.000042.
PMID:
22274327
[PubMed - in process]
Synthesis and characterization of InNbO? nanopowder for gas sensors.
Balamurugan C, Vijayakumar E, Subramania A.
Talanta. 2012 Jan 15;88:115-20. Epub 2011 Nov 26.
PMID:
22265476
[PubMed - in process]
Synthesis, characterization and biological activity of a niobium-substituted-heteropolytungstate on hepatitis B virus.
Zhang H, Qi Y, Ding Y, Wang J, Li Q, Zhang J, Jiang Y, Chi X, Li J, Niu J.
Bioorg Med Chem Lett. 2012 Feb 15;22(4):1664-9. Epub 2012 Jan 2.
PMID:
22264474
[PubMed - in process]
The mechanism of hydroaminoalkylation catalyzed by group 5 metal binaphtholate complexes.
Reznichenko AL, Hultzsch KC.
J Am Chem Soc. 2012 Feb 15;134(6):3300-11. Epub 2012 Feb 7.
PMID:
22264172
[PubMed - in process]
cyclo-Tetra-?-oxido-tetra-kis-[(acetyl-acetonato-?O,O')bis-(ethano-lato-?O)niobium(V)].
Herbst L, Visser HG, Roodt A, Muller TJ.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1669-70. Epub 2011 Nov 5.
PMID:
22199493
[PubMed - in process]
Asymmetric Split-Vacancy Defects in SiC Polytypes: A Combined Theoretical and Electron Spin Resonance Study.
Ivády V, Gällström A, Son NT, Janzén E, Gali A.
Phys Rev Lett. 2011 Nov 4;107(19):195501. Epub 2011 Nov 2.
PMID:
22181623
[PubMed - in process]
New iso-propoxides, tert-butoxides and neo-pentoxides of niobium(V): synthesis, structure, characterization and stabilization by trifluoroheteroarylalkenolates and pyridine ligands.
Appel L, Fiz R, Tyrra W, Mathur S.
Dalton Trans. 2012 Feb 21;41(7):1981-90. Epub 2011 Dec 16.
PMID:
22180863
[PubMed - in process]
Structural, electronic and magnetic effects of Al-doped niobium clusters: a density functional theory study.
Wang HQ, Li HF, Wang JX, Kuang XY.
J Mol Model. 2011 Dec 7. [Epub ahead of print]
PMID:
22146984
[PubMed - as supplied by publisher]
The microwave cavity perturbation technique for contact-free and in situ electrical conductivity measurements in catalysis and materials science.
Eichelbaum M, Stösser R, Karpov A, Dobner CK, Rosowski F, Trunschke A, Schlögl R.
Phys Chem Chem Phys. 2012 Jan 21;14(3):1302-12. Epub 2011 Dec 7.
PMID:
22146931
[PubMed - in process]
Hydrolysis of disaccharides over solid acid catalysts under green conditions.
Marzo M, Gervasini A, Carniti P.
Carbohydr Res. 2012 Jan 10;347(1):23-31. Epub 2011 Oct 17.
PMID:
22127325
[PubMed - in process]
Enhanced Photon Generation in a Nb/n-InGaAs/p-InP Superconductor/Semiconductor-Diode Light Emitting Device.
Sasakura H, Kuramitsu S, Hayashi Y, Tanaka K, Akazaki T, Hanamura E, Inoue R, Takayanagi H, Asano Y, Hermannstädter C, Kumano H, Suemune I.
Phys Rev Lett. 2011 Oct 7;107(15):157403. Epub 2011 Oct 6.
PMID:
22107319
[PubMed - in process]
Elution behavior of polyethylene and polypropylene standards on carbon sorbents.
Chitta R, Macko T, Brüll R, Kalies G.
J Chromatogr A. 2010 Oct 14. [Epub ahead of print]PMID: 21035809 [PubMed - as supplied by publisher]Related citations
Effect of Cyclic Impact Load on Shear Bond Strength of Zirconium Dioxide Ceramics.
Kawai N, Shinya A, Yokoyama D, Gomi H, Shinya A.
J Adhes Dent. 2010 Sep 28. doi: 10.3290/j.jad.a19471. [Epub ahead of print]PMID: 20978648 [PubMed - as supplied by publisher]Related citations
Differences in metal ion release following cobalt-chromium and oxidized zirconium total knee arthroplasty.
Garrett S, Jacobs N, Yates P, Smith A, Wood D.
Acta Orthop Belg. 2010 Aug;76(4):513-20.PMID: 20973359 [PubMed - indexed for MEDLINE]Related citations
DNA binding studies of new valine derived chiral complexes of tin(IV) and zirconium(IV).
Arjmand F, Jamsheera A.
Spectrochim Acta A Mol Biomol Spectrosc. 2010 Jun 12. [Epub ahead of print]PMID: 20965776 [PubMed - as supplied by publisher]Related citations
Influence of counter-ions on the self-assembly of ZrO(2) nanodisks.
Ji H, Liu X, Wang X, Yao X.
J Colloid Interface Sci. 2011 Jan 15;353(2):356-62. Epub 2010 Oct 16.PMID: 20951993 [PubMed - in process]Related citations
The interaction of osteoblasts with bone-implant materials: 1. the effect of physico-chemical surface properties of implant materials.
Kubies D, Himmlová L, Riedel T, Tresohlavá E, Balík K, Douderová M, Bártová J, Pesáková V.
Physiol Res. 2010 Oct 15. [Epub ahead of print]PMID: 20945966 [PubMed - as supplied by publisher]Free ArticleRelated citations
Fracture resistance of endodontically-treated teeth: effect of combination bleaching and an antioxidant.
Khoroushi M, Feiz A, Khodamoradi R.
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Allan LE, Clarkson GJ, Fox DJ, Gott AL, Scott P.
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Yasuyuki M, Kunihiro K, Kurissery S, Kanavillil N, Sato Y, Kikuchi Y.
Biofouling. 2010 Oct;26(7):851-8.PMID: 20938849 [PubMed - in process]Related citations
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Drisko GL, Chee Kimling M, Scales N, Ide A, Sizgek E, Caruso RA, Luca V.
Langmuir. 2010 Nov 16;26(22):17581-8. Epub 2010 Oct 11.PMID: 20936801 [PubMed - in process]Related citations
Renewable high-octane gasoline by aqueous-phase hydrodeoxygenation of C5 and C6 carbohydrates over Pt/Zirconium phosphate catalysts.
Li N, Tompsett GA, Huber GW.
ChemSusChem. 2010 Oct 25;3(10):1154-7. No abstract available. PMID: 20936668 [PubMed - in process]Related citations
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Affatato S, Spinelli M, Lopomo N, Grupp TM, Marcacci M, Toni A.
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American Elements is a copyrighted U.S. Trademark. All rights reserved.
Cobalt is a Block D, Group 9, Period 4 element. The number of electrons in each of Cobalt's shells is 2, 8, 15, 2 and its electronic configuration is [Ar] 3d7 4s2. In its elemental form cobalt's CAS number is 7440-48-4. The cobalt atom has a radius of 125.3.pm and it's Van der Waals radius is 200.pm. Cobalt and its compounds are somewhat toxic by skin contact and moderately toxic by inhalation. Cobalt has a metallic permeability two thirds that of iron. It exists as a mixture of two allotropes over a wide temperature range. The transformation is slow and accounts in part for the wide variation in the physical properties of cobalt. It is alloyed with iron, nickel and other metals to make Alnico, an alloy of unusual magnetic strength with many 
important 
uses. Samarium-cobalt is one of the highest strength magnet alloys known. Cobalt compounds produce a brilliant and permanent blue color in ceramic glazes, glass, pottery, tiles, and enamels. Co-60 is useful as a gamma ray source. Toxicity of cobalt and its compounds are mild by skin contact and moderate by ingestion. Cobalt is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Cobalt was first discovered by George Brandt in 1737. The origin of the word Cobalt comes from the German word 'Kobalt or Kobold' which translates as "goblin", "elf" or "evil spirit". See Cobalt research below. 
Niobium is a Block D, Group 5, Period 5 element. The number of electrons in each of Niobium's shells is 2, 8, 18, 12, 1 and its electronic configuration is [Kr] 4d4 5s1. In its elemental form niobium's CAS number is 7440-03-1. The niobium atom has a radius of 142.9.pm and it's Van der Waals radius is 200.pm. Some niobium compounds are considered very toxic. Niobium is the basis for various barium titanate compositions used as dielectric coatings in telecommunications 
and small advanced electronics, such as cell phones, pagers and laptop computers. Niobium is available as metal and compounds
with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Niobium has medical research applications. It is alloyed to produce arc-welding rods and in corrosion-resistant steel. Niobium was first discovered by Charles Hatchett in 1801. The word Niobium originates from Niobe, daughter of mythical Greek king Tantalus. See Niobium research below.
Zirconium is a Block D, Group 4, Period 5 element. The number of electrons in each of Zirconium's shells is 2, 8, 18, 10, 2 and its electronic configuration is [Kr] 4d2 5s2. In its elemental form zirconium's CAS number is 7440-67-7. The zirconium atom has a radius of 159.pm and it's Van der Waals radius is 200.pm. Zirconium is non-toxic. Zirconium’s principal mineral is zircon (Zirconium Silicate) and is primarily used in its oxide or zirconia form. Zirconium dioxide has a high melting point (2,700° C) and a low thermal conductivity. Its polymorphism, however, restricts its widespread use in ceramic industry. During a heating process, zirconia will undergo a phase transformation process. The change
in volume associated with this transformation makes the usage of pure zirconia in many applications impossible. Addition of some oxides, such as CaO, MgO, and Y2O3, into the zirconia structure in a 
certain degree results in a solid solution, which is a cubic form and has no phase transformation during heating and cooling. This solid solution material is termed as stabilized zirconia, a valuable refractory. Stabilized zirconia is used as a grinding media and engineering ceramics due to its increased hardness and high thermal shock resistivity. Stabilized zirconia is also used in applications such as oxygen sensors and solid oxide fuel cells due to its high oxygen ion conductivity.Zirconium was first discovered by William Gregor in 1791. The name Zirconium originated from the Persian word 'zargun' meaning gold color or gold-like. See Zirconium research below. 
