七百八十三章：不存在的金属
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核辐射产生的射线，是高能粒子。更多小说ltxsba.com
这些高能粒子打到半导体元件上，会造成元件参数变化，设备短路。
同时这些高能粒子，具有极强的穿透性。尤其是里面的伽马射线，随着能量增加，它可以轻松穿透数几十厘米的铅板。在工业上，伽马射线也被用来做金属探伤。
它比用途更广泛的X射线，穿透性更强劲，破坏力也更强大。
为了阻挡核辐射中的有害射线，渡辺阳太带领的技术小组，采用了一种特殊合金，来屏蔽射线。这种合金确实含有金属铋成分。
精巧大师嘲讽日方专家采用铋合金，来隔绝射线，是非常落伍非常跌份的行为。
这句话，让主持蝎型机器人设计的渡辺阳太呵呵冷笑起来。
他的笑容中，包含了一种专业领域中的极度自信，和对外行的不屑嘲弄。
“确实，比铅和铋原子序数大的金属材料还有很多。”
“比如说铀的原子序数是92。”
“哦我忘记了，铀有强辐射，燃料棒的堆芯就是铀金属。用它，半导体电子设备会毁的更快。”
“没关系，还有别的金属。”渡辺阳太满脸的微笑，“还有原子序数93的镎金属，不过我记得它的半衰期只有两天半，在自然界中几乎不存在，只能依靠人工合成。”
“没关系～没关系～”
“我还知道几种金属，再比如说半衰期足有二十天的锿。但它的原子序数足有99哦。只是很可惜，它也有放射性，价格可能要上亿美金一克。”
渡辺阳太摇头晃脑想了半天，装作恍然大悟的样子，惊喜道：“我还知道一种金属元素，它的半衰期足足有二十年。”
“锕元素听过没有？”
“去年你们华夏高能原子炉，一年制备了两点三克的锕元素。”
“哈哈～”
渡辺阳太的三位弟子，笑到前仰后合。
华夏去年一年，才制备了两点三克的锕元素，这要如何用金钱来衡量，又如何用金钱来买到？
用来制造屏蔽外壳，不是得全世界一起努力几十年，才能凑出一块。
金属铋几万吨块一吨不假，可它已经是在现有科技技术条件下，能寻找到的最合适金属。因为它的半衰期已经无法用数字衡量，它可以永远存在世界上，比已经存在了一百五十亿年的宇宙年龄还长。同时铋金属是一个几乎没有辐射的金属，而他们制造的铋合金，也不是普通铋金属可以比拟的。
金属铋往上，93～109大原子序数金属中，全是超铀金属元素。
它们具有强辐射特性，这其中，只有前四种以极稀有的含量储存在地球上，其余全部需要人工制备，一年的产量，往往论克计算。
再往后，就是人类连制备都无法制备的金属，只存在符号中，或者是宇宙中，某个人类一辈子无法到的深处。
听完渡辺阳太的解说，一旁的周仰文，和另一位刘院士弟子，彻底傻眼。真是活到老学到老，眼前这个渡辺阳太院士，估计是把世界已知金属元素的特性全给背下来了吧。
同时经过他这么一说，周仰文心里也打起了锣鼓。既然那些原子序数更大的金属，不是具有放射性，就是自然界中不存在。
那……
巨兽工业这边到底用了什么方法，周仰文凭观察，知道那台试验性的机器人外壳不是铅，更不是金属铋。硬要说，色泽似乎有些像不锈钢，但周仰文知道这不可能。
“所以。”渡辺阳太忽然正色道：“请这位巨兽工业的机械自动化专家，请你告诉我。”
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