metallic bond

简明释义

金属键

英英释义

例句

1.Copper's excellent thermal conductivity is a result of its metallic bond 金属键 characteristics.

铜的优良导热性是其金属键特性的结果。

2.The malleability of gold is due to its strong metallic bond 金属键 structure.

黄金的延展性是由于其强大的金属键结构。

3.In a metallic bond 金属键, electrons are shared among many atoms, giving metals their unique properties.

在金属键中，电子在多个原子之间共享，这赋予了金属独特的性质。

4.The metallic bond 金属键 in aluminum makes it lightweight yet strong.

铝中的金属键使其轻便而又坚固。

5.The strength of a metallic bond 金属键 allows metals to conduct electricity efficiently.

金属的金属键强度使它们能够有效地导电。

作文

The concept of a metallic bond is fundamental in understanding the properties of metals and their applications in various fields. A metallic bond can be defined as the force of attraction between free-floating valence electrons and the positively charged metal ions. This unique bonding structure gives metals their characteristic properties, such as electrical conductivity, malleability, and ductility. In this essay, I will explore the nature of metallic bonds, their formation, and their significance in everyday life.To begin with, let us delve into how a metallic bond forms. Metals have a unique atomic structure where they possess a relatively low number of valence electrons. These electrons are not tightly bound to individual atoms; instead, they can move freely throughout the metal lattice. This phenomenon is often referred to as the 'sea of electrons' model. The positively charged metal ions are held together by the electrostatic attraction to these delocalized electrons, resulting in a strong and stable metallic bond.One of the most remarkable characteristics of metals due to metallic bonding is their ability to conduct electricity. The free-moving electrons allow for the easy flow of electric current, making metals excellent conductors. This property is crucial in numerous applications, from electrical wiring to electronic devices. For instance, copper, which has one of the best electrical conductivities among metals, is widely used in electrical cables and components.Moreover, the malleability and ductility of metals are also attributed to metallic bonds. When a metal is subjected to stress, the layers of atoms can slide over each other without breaking the metallic bond. This allows metals to be hammered into sheets or drawn into wires without fracturing. Such properties are essential in manufacturing processes, enabling the creation of various metal products ranging from construction materials to intricate jewelry.In addition to their physical properties, metallic bonds play a significant role in determining the thermal conductivity of metals. Metals generally have high thermal conductivity, allowing them to efficiently transfer heat. This property is vital in applications such as cooking utensils and heat exchangers, where rapid heat transfer is necessary.Furthermore, the strength of metallic bonds contributes to the overall durability of metals. While different metals exhibit varying degrees of hardness and tensile strength, the presence of metallic bonds ensures that they can withstand substantial forces without breaking. This makes metals suitable for construction and manufacturing heavy machinery.In conclusion, the metallic bond is a key factor in defining the unique properties of metals. From their ability to conduct electricity to their malleability, ductility, and thermal conductivity, metallic bonds are integral to the functionality of metals in our daily lives. Understanding these bonds not only enhances our knowledge of material science but also informs the development of new technologies and innovations. As we continue to explore the potential of metals, the significance of metallic bonding will undoubtedly remain at the forefront of scientific inquiry and industrial application.

金属键的概念对于理解金属的性质及其在各个领域中的应用至关重要。金属键可以定义为自由浮动的价电子与带正电的金属离子之间的吸引力。这种独特的结合结构使金属具有其特征性质，如电导性、可锻性和延展性。在这篇文章中，我将探讨金属键的性质、形成以及它们在日常生活中的重要性。首先，让我们深入了解金属键是如何形成的。金属具有独特的原子结构，拥有相对较少的价电子。这些电子并不紧密地绑定在单个原子上，而是可以在金属晶格中自由移动。这种现象通常被称为“电子海”模型。带正电的金属离子通过与这些离子化电子的静电吸引力相互作用，从而形成强大而稳定的金属键。由于金属键，金属的一个显著特性是它们能够导电。自由移动的电子允许电流的轻松流动，使金属成为优秀的导体。这一特性在许多应用中至关重要，从电线到电子设备。例如，铜在金属中具有最佳的电导率之一，因此广泛用于电缆和组件中。此外，金属的可锻性和延展性也归因于金属键。当金属受到应力时，原子的层可以相互滑动而不破坏金属键。这使得金属可以被锤打成薄片或拉成线而不会断裂。这些特性在制造过程中至关重要，使得各种金属产品的生产成为可能，从建筑材料到精致的珠宝。除了它们的物理特性，金属键在决定金属的热导率方面也起着重要作用。金属通常具有高热导率，能够有效地传递热量。这一特性在烹饪器具和热交换器等应用中至关重要，其中快速的热传递是必要的。此外，金属键的强度也有助于金属的整体耐用性。虽然不同的金属表现出不同程度的硬度和抗拉强度，但金属键的存在确保它们能够承受相当大的力量而不破裂。这使得金属适合于重型机械的制造和建筑。总之，金属键是定义金属独特性质的关键因素。从它们的电导能力到可锻性、延展性和热导率，金属键对于金属在日常生活中的功能至关重要。理解这些键不仅增强了我们对材料科学的认识，还为新技术和创新的发展提供了信息。随着我们继续探索金属的潜力，金属键的重要性无疑将始终处于科学研究和工业应用的前沿。