dielectric breakdown

简明释义

介质哗

英英释义

例句

1.The phenomenon of dielectric breakdown can occur in gases under certain conditions.

在某些条件下，气体中可以发生介质击穿现象。

2.During testing, the capacitor experienced dielectric breakdown, which rendered it unusable.

在测试过程中，电容器发生了介质击穿，使其无法使用。

3.The high voltage caused a dielectric breakdown in the insulation material, leading to a short circuit.

高电压导致绝缘材料发生介质击穿，导致短路。

4.Engineers must consider dielectric breakdown when designing electrical components for high-voltage applications.

工程师在为高电压应用设计电气组件时必须考虑介质击穿。

5.To prevent dielectric breakdown, materials with high dielectric strength are often used.

为了防止介质击穿，通常使用具有高介电强度的材料。

作文

Dielectric materials are insulators that can store electrical energy when subjected to an electric field. However, there is a limit to the amount of electric field strength that these materials can withstand. When this limit is exceeded, a phenomenon known as dielectric breakdown occurs. This event is characterized by the sudden loss of dielectric properties, allowing current to flow through the material, which can lead to catastrophic failures in electrical systems.The process of dielectric breakdown involves the ionization of the dielectric material. When the electric field strength exceeds the material's breakdown voltage, free electrons are generated within the insulating medium. These free electrons can then collide with other atoms, creating more free electrons and leading to an avalanche effect. This chain reaction results in a conductive path being formed, allowing current to pass through the once-insulating material.Understanding dielectric breakdown is crucial for engineers and designers who work with electrical components. For instance, capacitors, which rely on dielectric materials to store energy, must be designed to operate below their breakdown voltage to ensure reliability and safety. If a capacitor experiences dielectric breakdown, it can fail dramatically, potentially causing damage to surrounding components and posing safety risks.In practical applications, various factors can influence the occurrence of dielectric breakdown. These include temperature, humidity, and the presence of impurities within the dielectric material. For example, increased temperature can reduce the breakdown voltage of a dielectric, making it more susceptible to failure. Similarly, contaminants or moisture can create pathways for electrical discharge, further increasing the likelihood of dielectric breakdown.To mitigate the risks associated with dielectric breakdown, engineers often implement design strategies such as increasing the thickness of the dielectric layer, using materials with higher breakdown voltages, and ensuring proper environmental controls during operation. Additionally, regular testing and monitoring of electrical systems can help identify potential issues before they lead to catastrophic failures.In conclusion, dielectric breakdown is a critical phenomenon that can have significant implications in electrical engineering. By understanding its mechanisms and influences, engineers can design safer and more reliable electrical systems. The importance of choosing appropriate materials and maintaining operational conditions cannot be overstated, as these factors play a vital role in preventing dielectric breakdown and ensuring the longevity of electrical components.

电介质材料是绝缘体，当施加电场时可以储存电能。然而，这些材料能够承受的电场强度是有限的。当这个限制被超越时，就会发生一种现象，称为电介质击穿。这一事件的特征是电介质特性的突然丧失，允许电流通过材料流动，这可能导致电气系统的灾难性故障。电介质击穿的过程涉及电介质材料的电离。当电场强度超过材料的击穿电压时，绝缘介质内会产生自由电子。这些自由电子可以与其他原子碰撞，产生更多的自由电子，从而导致雪崩效应。这个链式反应导致形成导电路径，允许电流通过曾经绝缘的材料。理解电介质击穿对于从事电气组件工作的工程师和设计师至关重要。例如，依赖电介质材料储存能量的电容器，必须设计为在其击穿电压以下工作，以确保可靠性和安全性。如果电容器经历电介质击穿，它可能会以戏剧性的方式失效，可能导致周围组件的损坏并带来安全风险。在实际应用中，影响电介质击穿发生的各种因素包括温度、湿度和电介质材料中杂质的存在。例如，温度升高可能降低电介质的击穿电压，使其更容易发生故障。同样，污染物或水分可能在电气放电中创造路径，进一步增加电介质击穿的可能性。为了减轻与电介质击穿相关的风险，工程师通常实施设计策略，例如增加电介质层的厚度，使用具有更高击穿电压的材料，以及确保在操作过程中适当的环境控制。此外，定期测试和监测电气系统可以帮助识别潜在问题，以防止其导致灾难性故障。总之，电介质击穿是一个关键现象，可能对电气工程产生重大影响。通过理解其机制和影响，工程师可以设计出更安全、更可靠的电气系统。选择合适的材料和维护操作条件的重要性不容忽视，因为这些因素在防止电介质击穿和确保电气组件的长期使用方面发挥着至关重要的作用。