coltish
发表于 2025-3-26 21:42:38
Concepts of Glass-Ceramics,liquid becomes thermodynamically unstable with respect to one or more crystalline phases. Whether or not crystals will form as a result of this instability is dependent on the rate of cooling and the kinetics of crystallization of the particular crystalline species that are involved.
mastoid-bone
发表于 2025-3-27 05:07:54
The Melting of Glass,hich should be of concern to the successful technologist. No attempt will be made to provide an exhaustive literature survey. Rather, only selected sources which are useful within the context of the discussion will be referenced; special attention will be given recent findings. Nonetheless, at the o
撕裂皮肉
发表于 2025-3-27 06:07:33
Experimental Glass Melting Techniques,e glass transformation temperature. Therefore, any study of a particular system must refer to a uniform cooling rate. In addition, for practical purposes, it is necessary to define the smallest usable volume. This varies from fractions of a gram (in reflective beads) to many kilograms (for massive o
无能性
发表于 2025-3-27 11:33:59
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反对
发表于 2025-3-27 14:14:53
Dispersion, Stress-Optical Effects In Glass, Optical Glasses, dispersion. Sometimes the term dispersion is specifically applied to the derivative dn/dλ, although this usage is not always followed. A typical qualitative curve of n, index of refraction, versus λ, wavelength, is given in Figure 1 for a large portion of the electromagnetic spectrum for a material
表两个
发表于 2025-3-27 21:41:02
The Fractology of Glass,d it spreads with measurable velocity to its conclusion. The paths by which it propagates tell a complex story of static and dynamic stress configurations, weaknesses of design and material inhomogeneities. In short, it leaves a record of the event and it leaves it in a form which can be read. It is
膝盖
发表于 2025-3-27 22:42:10
The Corrosive Nature of Molten Glass,glass. The physical attack usually consists of penetration of voids, cracks and joints by the molten glass or in some cases refractories may be abraded. Chemical corrosion is much more deleterious to the life of the refractories since it involves the dissolution of some or all of their components. A
诱导
发表于 2025-3-28 05:41:45
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暗讽
发表于 2025-3-28 06:44:45
Electrical Properties of Glass,avior of glass will be reviewed. Second, a synthesis of the understanding of composition and structure effects will be presented; and third, important problems in this area will be discussed. The theoretical review will first consider a general theory of conductivity, followed by more specific discu
负担
发表于 2025-3-28 10:27:55
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