液体急冷非晶質物質の非晶質度(物性)(<特集>ガラス・アモルファス材料及びその材料科学の進展)

概要

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The heat of crystallization (ΔH) for rapid quenching materials was measured to establish the non-crystallinity under several cooling rates. The values of ΔH were increased by increasing the cooling rate, and at the glassy states, these values reached to the constant value (ΔH0). The value of ΔH/ΔH0 was proposed to provide the experimental parameter of non-crystallinity normalized from crystalline (=zero) to glass (=unity). The physical properties, for example, the coercive forces of BaO-Fe2O3, the Vickers hardness and electrical resisitivity of Pd82Si18 and Ni67Si13B20, were related to the non-crystallinity (=ΔH/ΔH0). This experimental parameter was useful to understand the state of the non-crystalline solid which had diffused pattern in X-ray diffraction.
社団法人日本セラミックス協会の論文
1989-03-01