H_2气有能力透过很多金属的晶格,但是纯钯和某些钯合金是唯一的金属:在适当的压力温度情况下,H_2能很迅速地扩散。然而纯钯是不适合作扩散膜的,因为温度在310℃以下时会发生α—β相转变。它使 H 2 gas has the ability to penetrate the lattice of many metals, but pure palladium and some palladium alloys are the only metals: H 2 diffuses very rapidly at the right pressure and temperature. Pure palladium, however, is unsuitable as a diffusion membrane because α-β phase transformation occurs at temperatures below 310 ° C. it makes