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<p><a href="page.php?w=isotopes_of_zirconium">isotopes</a> occur naturally, four of which are stable. The metal and its alloys are mainly used as a <a href="page.php?w=refractory">refractory</a> and <a href="page.php?w=opacifier">opacifier</a>; zirconium alloys are used to clad <a href="page.php?w=nuclear_fuel_rod">nuclear fuel rod</a>s due to their low neutron absorption and strong resistance to corrosion, and in space vehicles and turbine blades where high heat resistance is necessary. Zirconium also finds uses in <a href="page.php?w=Flashbulb_%28photography%29">flashbulbs</a>,</p><p>
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