zircalloy

简明释义

英[ˈzɪr.kəˌlɔɪ]美[ˈzɪr.kəˌlɔɪ]

n. 锆锡合金；锆合金（等于 zircaloy）

英英释义

单词用法

同义词

反义词

例句

1.Reports suggest there was a partial meltdown and that the zircalloy rods began to "bubble". This was why the reactors were flooded with sea water.

报告表明有一部分溶毁并且锆棒气泡化，因为反应堆被海水淹没。

2.This is when the uranium and the zircalloy fuel rods at the heart of the reactor melt. It occurs at temperatures above 2, 200c, releasing highly radioactive particles.

当反应堆的核心铀和锆合金的燃料棒融化时，它需要2,200摄氏度的高温，同时释放大量辐射微粒。

3.The forming technique by spinning for the necking parts of zircalloy-4 guide tubes for nuclear reactors is described.

本文阐述核反应堆用锆-4合金导向管缩径段的旋压成型工艺。

4.This is when the uranium and the zircalloy fuel rods at the heart of the reactor melt. It occurs at temperatures above 2,200c, releasing highly radioactive particles.

当反应堆的核心铀和锆合金的燃料棒融化时，它需要2,200摄氏度的高温，同时释放大量辐射微粒。

5.This is when the uranium and the zircalloy fuel rods at the heart of the reactor melt. It occurs at temperatures above 2, 200c, releasing highly radioactive particles.

当反应堆的核心铀和锆合金的燃料棒融化时，它需要2,200摄氏度的高温，同时释放大量辐射微粒。

6.The use of zircalloy in fuel rods helps improve the efficiency of the reactor.

在燃料棒中使用锆合金有助于提高反应堆的效率。

7.Due to its high melting point, zircalloy is often used in high-temperature applications.

由于其高熔点，锆合金常用于高温应用中。

8.The nuclear reactor components are made from zircalloy to ensure longevity and resistance to corrosion.

核反应堆的组件由锆合金制成，以确保耐用性和抗腐蚀性。

9.Research shows that zircalloy can withstand extreme environments without degrading.

研究表明，锆合金能够在极端环境下不降解。

10.In the aerospace industry, zircalloy is valued for its lightweight and strength.

在航空航天工业中，锆合金因其轻巧和强度而受到重视。

作文

In the realm of nuclear engineering, materials play a crucial role in ensuring safety and efficiency. One such material that has gained significant attention is zircalloy. This alloy, primarily composed of zirconium and small amounts of tin, iron, and nickel, is renowned for its excellent corrosion resistance and mechanical properties. The significance of zircalloy cannot be overstated, as it is extensively used in the fabrication of fuel rods for nuclear reactors. Its ability to withstand high temperatures and pressures makes it an ideal candidate for this application.The use of zircalloy in nuclear reactors dates back to the mid-20th century when the demand for reliable and safe materials became paramount. Unlike other metals, zirconium has a low neutron absorption cross-section, which means it does not interfere significantly with the nuclear fission process. This characteristic is essential because any material that absorbs neutrons can hinder the reactor's efficiency. Therefore, zircalloy is favored in the construction of fuel cladding, which surrounds the nuclear fuel and prevents the release of radioactive materials into the coolant.Moreover, the corrosion resistance of zircalloy is another critical factor contributing to its widespread use. In a nuclear reactor environment, the combination of high temperatures and aggressive chemical conditions can lead to material degradation. However, zircalloy exhibits remarkable resistance to oxidation and stress corrosion cracking, thus ensuring the integrity of the fuel rods over extended periods. This durability is vital for the long-term operation of reactors, as it reduces the frequency of maintenance and replacement, ultimately leading to cost savings.Despite its advantages, the use of zircalloy is not without challenges. One of the significant concerns is its behavior under extreme conditions, such as during a loss-of-coolant accident (LOCA). In such scenarios, the temperature of the zircalloy cladding can rise dramatically, leading to potential oxidation and the formation of hydrogen gas. This phenomenon raises safety concerns, as hydrogen can accumulate and pose an explosion risk. Consequently, ongoing research aims to improve the performance of zircalloy under these adverse conditions, exploring alternative compositions and treatments to enhance its resilience.In conclusion, zircalloy plays an indispensable role in the nuclear industry due to its unique properties and performance characteristics. Its low neutron absorption, exceptional corrosion resistance, and mechanical strength make it the material of choice for fuel rod cladding in nuclear reactors. However, as with any material, continuous research and development are necessary to address the challenges associated with its use. The future of nuclear energy relies on advancements in materials science, and zircalloy will undoubtedly remain at the forefront of these innovations, ensuring that nuclear power remains a viable and safe energy source for generations to come.

在核工程领域，材料在确保安全和效率方面发挥着至关重要的作用。其中一种获得显著关注的材料是锆合金。这种合金主要由锆和少量的锡、铁和镍组成，以其优异的耐腐蚀性和机械性能而闻名。锆合金的重要性不容小觑，因为它被广泛用于核反应堆燃料棒的制造。它能够承受高温和高压，使其成为这一应用的理想选择。锆合金在核反应堆中的使用可以追溯到20世纪中期，当时对可靠和安全材料的需求变得至关重要。与其他金属不同，锆具有低中子吸收截面，这意味着它不会显著干扰核裂变过程。这一特性至关重要，因为任何吸收中子的材料都可能阻碍反应堆的效率。因此，锆合金在燃料包壳的建造中受到青睐，燃料包壳包围核燃料，并防止放射性材料释放到冷却剂中。此外，锆合金的耐腐蚀性是其广泛使用的另一个关键因素。在核反应堆环境中，高温和侵蚀性化学条件的结合可能导致材料降解。然而，锆合金表现出卓越的氧化和应力腐蚀开裂的抵抗力，从而确保燃料棒在较长时间内的完整性。这种耐用性对于反应堆的长期运行至关重要，因为它减少了维护和更换的频率，最终节省了成本。尽管有其优点，锆合金的使用并非没有挑战。其中一个主要问题是在极端条件下的行为，例如在冷却剂丧失事故（LOCA）期间。在这种情况下，锆合金包壳的温度可能急剧上升，导致潜在的氧化和氢气的形成。这一现象引发了安全隐患，因为氢气可能会积聚并构成爆炸风险。因此，持续的研究旨在改善锆合金在这些不利条件下的性能，探索替代成分和处理方法以增强其韧性。总之，锆合金由于其独特的性质和性能特征，在核工业中发挥着不可或缺的作用。其低中子吸收、卓越的耐腐蚀性和机械强度使其成为核反应堆燃料棒包壳的首选材料。然而，与任何材料一样，持续的研究和开发是必要的，以解决与其使用相关的挑战。核能的未来依赖于材料科学的进步，而锆合金无疑将继续处于这些创新的前沿，确保核能在未来几代人中仍然是可行和安全的能源来源。