Generation of new functional properties of aluminum by means of heterogeneous modification of microstructure

阐明了氢致弯曲变形是通过纯铝表面层的变质而产生的。为了提高铝的吸氢能力，在充氢前进行了化学镀钯。氢致变形与钯层厚度和吸氢量有关。此外，还发现当弯曲试件通过加热放出吸附的氢时，试件恢复到原来的扁平形状。

It was clarified that hydrogen-induced bending deformation was generated by means of the modification of surface layer of pure aluminum. To enhance the hydrogen absorption to aluminum, electro-less palladium coating was carried out prior to the hydrogen charging. It was also shown that the hydrogen-induced deformation was dependent on the thickness of palladium layer and the amount of hydrogen absorption. In addition to this, it was found that the specimen was recovered to the original flat shape when absorbed hydrogen was evolved from the bent specimen by heating.