INTERGRAIN Meaning and
Definition
-
Intergrain is a term mainly used in the field of materials science and engineering, particularly in the study of polycrystalline materials such as metals, ceramics, and semiconductors. It refers to the region or boundary that exists between individual grains within a polycrystalline material.
In a polycrystalline structure, grains are distinct crystalline regions with their own crystallographic orientations, which are separated by intergrain boundaries. These boundaries are interfaces between adjacent grains and can be of different types, such as high-angle or low-angle grain boundaries, depending on the relative orientation and misorientation between the adjacent grains.
The intergrain region plays a crucial role in determining the overall properties and performance of polycrystalline materials. It affects various mechanical, electrical, thermal, and chemical properties of the material, such as grain growth, grain size distribution, hardness, ductility, conductivity, and corrosion resistance. The properties at the intergrain boundaries are often different from those within the grains themselves, as they can concentrate defects, impurities, or stress.
Understanding and controlling the behavior and properties of intergrain boundaries are of great importance in materials science and engineering, as they directly influence the macroscopic properties and the performance of polycrystalline materials. By manipulating intergrain boundaries, researchers can enhance the overall strength, toughness, and other desired properties of materials. Thus, the study of intergrain phenomena and the characterization of the intergrain region are significant in the design and development of advanced materials with tailored or improved functionalities.
Etymology of INTERGRAIN
The term "intergrain" is a combination of two words: "inter" and "grain".
The word "inter" is a Latin prefix meaning "between" or "among". It is commonly used in English to indicate interaction, interruption, or involvement.
The word "grain" has its origins in Old English and Germanic languages. It refers to small, hard particles or fragments, particularly those of wood or cereal crops. In the context of materials such as wood or metal, "grains" are the natural lines or layers that can be observed.
When combined, "intergrain" implies something that occurs between or among the individual grains. In various contexts, such as in materials science or technology, "intergrain" often refers to interactions, phenomena, or characteristics that take place between the grains of a substance or material.
