Home Materials » Metals » Zirconium, Zr

Zirconium, Zr

Zirconium is a chemical element with the symbol Zr and atomic number 40. It is a lustrous, gray-white, strong transition metal that resembles titanium. Zirconium is never found as a native metal, but is instead obtained mainly from the mineral zircon. Zirconium is used as an alloying agent due to its high resistance to corrosion.

Zirconium is a lustrous, grayish-white, soft, ductile, and malleable metal which is solid at room temperature, though it becomes hard and brittle at higher purities. In powder form, zirconium is highly flammable, but the solid form is far less prone to igniting. Zirconium is highly resistant to corrosion by alkalis, acids, salt water, and other agents. However, it will dissolve in hydrochloric and sulfuric acid, especially when fluorine is present. Alloys with zinc become magnetic below 35 K

The melting point of zirconium is at 1855°C, and the boiling point is at 4409°C. Zirconium has an electronegativity of 1.33 on the Pauling scale. Of the elements within d-block, Zirconium has the fourth lowest electronegativity after yttrium, lutetium, and hafnium.

Technical Data
Symbol	Zr	Density (25°C)/gcm³	6.51
Atomic number	40	Melting point / °C	1857
No. of naturally occurring isotopes	5	Boiling point / °C	4200
Atomic weight	91.22	ΔH_fus/kJmol^-1	19.2
Electronic configuration	[Kr]4d²5s²	ΔH_vap/kJmol^-1	567
Metal radius/pm	160	ΔH_{f(monoatomic gas)}/kJmol^-1	612(+/-11)
Ionic radius(6-coordinate)/pm M(IV)	72	Electrical resistivity
Ionization energy/kJmol^-1 I	660	(20°C)/μohm cm	40
Ionization energy/kJmol^-1 II	1267	Electronegativity χ	1.4
Ionization energy/kJmol^-1 III	2218

Evaporation Techniques
Temperature (^oC) @Vap. Pressure			Techniques				Remarks
10^-8 Torr	10^-6 Torr	10^-4 Torr	Electron Beam	Crucible	Coil	Boat	Remarks
1477	1702	1987	Excellent	-	-	Tungsten	Alloys with Tungsten. Films oxidize readily

Evaporation Materials
Z2-5000-M pellets 3mm diameter x 3mm long
Z2-5001-M pellets 6mm diameter x 6mm long
Z2-5002-M pieces 3mm and smaller
Z2-5003-M pieces 3-6mm

The foils are available in either rectangular or circular shape. Please enter width and length or diameter of the required foil.

Foil
Z2-3003-F 0.004" (0.1mm)
Z2-3007-F 0.008" (0.2mm)

Powder
Z2-10001-P -200 mesh
Z2-10002-P -325 mesh

Rods
Z2-2000-R 0.0625" (1.58mm)
Z2-2001-R 0.125" (3.175mm)
Z2-2007-R 0.197" (5mm)
Z2-2002-R 0.250" (6.35mm)
Z2-2008-R 0.394" (10mm)
Z2-2003-R 0.500" (12.7mm)
Z2-2004-R 0.625" (15.88mm)
Z2-2005-R 0.750" (19.05mm)
Z2-2006-R 1" (25.4mm)

Sheet
Z2-4001-S 0.015" (0.38mm)
Z2-4002-S 0.020" (0.5mm)
Z2-4003-S 0.030" (0.76mm)
Z2-4004-S 0.040" (1mm)
Z2-4006-S 0.060" (1.5mm)
Z2-4008-S 0.125" (3.175mm)
Z2-4009-S 0.250" (6.35mm)
Z2-4010-S 0.375" (9.525mm)
Z2-4011-S 0.500" (12.7mm)
Z2-4012-S 0.750" (19.05mm)
Z2-4013-S 1" (25.4mm)

Wire
Z2-1000-W 0.005" (0.127mm)
Z2-1001-W 0.006" (0.152mm)
Z2-1003-W 0.008" (0.203mm)
Z2-1007-W 0.020" (0.5mm)
Z2-1009-W 0.040" (1.0mm)
Z2-1013-W 0.080" (2.0mm)

Our company

My account

Testbourne Ltd
Unit C, The Loddon Centre
Wade Road
Basingstoke
Hampshire. RG24 8FL, England, UK

+44 (0)1256 467055

+44 (0)1256 362955

info@testbourne.com

Testbourne offers an ISO9001 quality assured service to companies across a wide market area from R&D through to on-line production. Our company objective is to provide a fast, efficient and personalised service, with full technical support to all our customers.