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纯的化学活泼的高熔点金属(锆、铌、钒、铍)正广泛用作核反应堆“燃烧元件”包复層的防护材料。 锆:纯锆在8吨/公分~2压力及1300℃于真空下易于压制并烧结成致密的毛坯,其密度为6.2克/公分~3,硬度为94HRB。经烧结的锆可轧压至50％。 采用在制(?)上涂以薄的含锆粉末層,随后在970～1170℃于填空中加热的方法所制成的锆合金防护涂層,可防护铀γ射线。粉末锆合金同样可用作热挤压铀棒用尼木镍合金模具的涂層。采用高温钎焊法尼木镍合金板
Purely chemically active refractory metals (zirconium, niobium, vanadium, beryllium) are widely used as protective materials for the cladding of “combustion elements” of nuclear reactors. Zirconium: pure zirconium at 8 tons / cm ~ 2 pressure and 1300 ℃ in vacuum easily pressed and sintered into a compact blank, the density of 6.2 g / cm ~ 3, the hardness of 94HRB. Sintered zirconium can be rolled to 50%. The zirconium alloy protective coating made by the method of coating a thin layer of zirconium powder on the system (?) Followed by heating at a filling temperature of 970-1,170 DEG C can prevent uranium gamma rays. Powder zirconium alloy can also be used as a hot extrusion uranium rod nickel-nickel alloy mold coating. Using high temperature brazing method Nickel nickel alloy plate