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本文应用精密的电阻测量及x-光衍射技术,研究了几种成分的Cu—Zr金属玻璃的氧化和由此而产生的晶化现象。主要发现是:在远低于玻璃化温度(Tg)和较低的氧压下,Cu—Zr金属玻璃的氧化主要表现为Zr的选择氧化。正是由于这种选择氧化使Cu—Zr玻璃的稳定性降低,造成富铜相的结晶。这种晶化和Tg附近的晶化有许多不同之处,而这种氧化却和晶态金属中的氧化规律基本相同。
In this paper, the use of precision resistance measurement and x-ray diffraction technology, several components of the Cu-Zr metallic glass oxidation and the resulting crystallization phenomenon. The main findings are that the oxidation of Cu-Zr metallic glass is mainly attributed to the selective oxidation of Zr at much lower glass transition temperature (Tg) and lower oxygen pressure. It is because of this selective oxidation that the stability of the Cu-Zr glass is reduced, resulting in the crystallization of a copper-rich phase. There are many differences between this crystallization and the crystallization near the Tg, and the oxidation is essentially the same as the oxidation in the crystalline metal.