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现在,已普遍承认铝及铝基合金中在氢和氧化物之间存在着键,虽然对这种键的性质和量的方面有各种各样的观点。对其做严格的分析可以得出这样的结论,当氢浓度低时氧化物的微粒上可能生成富氢的络合物,但不致破坏金属的整体性,而当氢浓度很大时,则产生充满分子氢的气孔,这种气孔具有负曲率半径的透镜形。同氧化物处于键合状态的气态氢数量是可以算出的:如果说在熔体中氧化物的微粒
It is now generally acknowledged that there is a bond between hydrogen and oxides in aluminum and aluminum based alloys, although there are various points of view regarding the nature and amount of such bonds. A rigorous analysis of it leads to the conclusion that hydrogen-rich complexes may form on oxide particles when the hydrogen concentration is low, but not to destroy the integrity of the metal, whereas when the hydrogen concentration is high, Filled with molecular hydrogen pores, the pores have a negative radius of curvature of the lens. The amount of gaseous hydrogen in the bond with the oxide can be calculated: if it is said that the particles of oxide in the melt