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本文扼要叙述了非溅散锆-铝消气剂的特性。通过对它的吸气量和吸气速率的实验测定,表明了在300～700℃范围内,它的吸气性能是令人满意的。对空气而言,在700℃,1×10~(-6)乇时,吸气速率约为310厘米3/2厘米~2·秒。700℃时的吸气量达1.0×10~(-1)～1.4 ×10~(-3)厘米~3·乇/2厘米~2。实验用的锆-铝消气剂是采用氢化锆粉(84％)与铝粉(l6％)配制而成。锆-铝合金的生成是在真空烧结过程中,除了有铝的局部蒸发以外,还由于氢化锆的分解,不断放出氢气而形成的,因而使得消气剂涂层更富于多孔性和更为清洁。邮电部北京506厂,将由Zr与Al直接熔炼而成的Zr-Al消气剂运用于行波管中,涂在灯丝托盘上,群频噪声显著下降,缩短了老炼时间,并且很大地简化了使用工艺,取得了初有成效的进展。本文最后展望了它的发展。
This article briefly describes the characteristics of non-sputtered zirconium-aluminum getters. It has been shown that its getter performance is satisfactory at 300-700 ° C by experimental measurements of its inspiratory capacity and inspiratory rate. For air, the suction rate is about 310 cm 3/2 cm-2 sec at 700C, 1 x 10 -6 torr. The aspiration amount at 700 ° C is 1.0 × 10 -1 to 1.4 × 10 -3 cm -3 · Torr / 2 cm -2. The experimental zirconium-aluminum getter is prepared using zirconium hydride powder (84%) and aluminum powder (l6%). The zirconium-aluminum alloy is formed during the vacuum sintering in addition to the local vaporization of aluminum and also by the evolution of hydrogen zirconium due to the decomposition of zirconium hydride, thus making the getter coating more porous and cleaner . Ministry of Posts and Telecommunications Beijing 506 plant, the Zr-Al getter from the direct melting of Zr and Al used in traveling wave tube, coated on the filament tray, the cluster frequency noise decreased significantly, reducing the aging time, and greatly simplified The use of technology, achieved initial success. Finally, the article forecasts its development.