기계적합금화된 TiH2의 수소방출에 따른 미세조직 특성

Abstract

We manufactured the metal hydrides of (Ti0.88Mg0.12)H2 using a very easy and cheap way that Ti-12%Mg blending powder was mechanically milled with liquid milling media such as isopropyl alcohol (C3H8O, containing oxygen) and hexane (C6H14, no oxygen) as hydrogen source. The (Ti0.88Mg0.12)H2 synthesized in isopropyl alcohol contained the high oxygen of 11.2%, while one in hexane had the low oxygen content of 0.7%. Such a difference of oxygen content affected the dehydriding behavior, phase transformation, and microstructural evolution at high temperature, which was investigated through X-ray diffraction and DSC measurements, and electron microscope observations.