问答题

简答题 Al和Ag都具有面心立方结构，Al的原子半径为0．143nm。Ag的原子半径为0．144nm。试问：A1在Ag中能否形成无限固溶体？为什么？

【参考答案】

不能。因为Al的原子价为3,Ag的原子价为1,当高价Al在低价Ag中的溶入量达到一定值时,固溶体的电子浓度就会达到极限电......

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