atomic percent

简明释义

原子百分率

英英释义

例句

1.The atomic percent of oxygen in the compound is crucial for understanding its reactivity.原子百分比

化合物中氧的原子百分比对理解其反应性至关重要。

2.The alloy consists of 70% copper and 30% zinc in terms of atomic percent.原子百分比

该合金由70%的铜和30%的锌组成，按原子百分比计算。

3.In this experiment, we will analyze the sample for its atomic percent of iron and nickel.原子百分比

在这个实验中，我们将分析样品中铁和镍的原子百分比。

4.We found that the atomic percent of carbon in the steel affects its hardness.原子百分比

我们发现钢中的碳的原子百分比影响其硬度。

5.The atomic percent of silicon in the semiconductor material is critical for its performance.原子百分比

半导体材料中硅的原子百分比对其性能至关重要。

作文

In the field of chemistry and materials science, the term atomic percent refers to the proportion of a specific type of atom in a mixture or compound, expressed as a percentage of the total number of atoms present. This concept is crucial for understanding the composition of various substances, particularly in alloys, compounds, and complex mixtures. For instance, when analyzing an alloy made of iron and carbon, one might find that it contains 2% carbon by atomic percent. This means that out of every 100 atoms in the alloy, 2 are carbon atoms, while the remaining 98 are iron atoms. Such precise measurements allow scientists and engineers to tailor materials to specific properties, enhancing their performance in various applications.Understanding atomic percent is essential not only for chemists but also for professionals in fields such as metallurgy, nanotechnology, and semiconductor manufacturing. In metallurgy, for example, the mechanical properties of metals can significantly change with even small variations in composition. By controlling the atomic percent of certain elements, such as nickel or chromium in stainless steel, manufacturers can produce materials that are resistant to corrosion, heat, and wear. Similarly, in semiconductor technology, the atomic percent of dopants like phosphorus or boron can determine the electrical properties of silicon, thus influencing the performance of electronic devices.Moreover, the concept of atomic percent extends beyond just solid materials. In gaseous mixtures, such as air, understanding the atomic percent of different gases is vital for various applications, including environmental monitoring and industrial processes. For instance, the atomic percent of nitrogen in the atmosphere is approximately 78%, while oxygen makes up about 21%. These values are critical for calculations related to combustion processes, atmospheric studies, and even respiratory physiology.One of the significant advantages of using atomic percent over weight percent is that it provides a clearer picture of the atomic-level interactions within a material. Since different elements have different atomic weights, weight percent can sometimes be misleading. By expressing compositions in atomic percent, scientists can more accurately predict how atoms will interact based on their ratios, leading to better insights into chemical reactivity, bonding, and physical properties.In conclusion, the term atomic percent plays a pivotal role in the scientific understanding of materials and their properties. It allows for precise control over the composition of substances, which is essential for innovation in various technologies. Whether in developing new materials for construction, improving the efficiency of electronic devices, or understanding the behavior of gases in the atmosphere, atomic percent serves as a fundamental concept that bridges theoretical knowledge and practical applications. As we continue to advance in science and technology, the importance of mastering concepts like atomic percent cannot be overstated, as they are integral to the progress of many fields.

在化学和材料科学领域，术语atomic percent指的是特定类型原子在混合物或化合物中的比例，以所含原子总数的百分比表示。这个概念对于理解各种物质的成分至关重要，特别是在合金、化合物和复杂混合物中。例如，在分析由铁和碳组成的合金时，可能会发现其碳的atomic percent为2%。这意味着在合金中的每100个原子中，有2个是碳原子，而其余98个是铁原子。这种精确的测量使科学家和工程师能够根据特定的性能要求调整材料，从而增强它们在各种应用中的表现。理解atomic percent不仅对化学家至关重要，也对冶金、纳米技术和半导体制造等领域的专业人士至关重要。例如，在冶金学中，金属的机械性能可以因成分的微小变化而显著改变。通过控制某些元素的atomic percent，如不锈钢中的镍或铬，制造商可以生产出耐腐蚀、耐热和耐磨损的材料。同样，在半导体技术中，掺杂剂如磷或硼的atomic percent可以决定硅的电气性能，从而影响电子设备的表现。此外，atomic percent的概念不仅限于固体材料。在气体混合物中，如空气，了解不同气体的atomic percent对于各种应用（包括环境监测和工业过程）至关重要。例如，大气中氮的atomic percent约为78%，而氧气约占21%。这些数值对于与燃烧过程、大气研究乃至呼吸生理学相关的计算至关重要。使用atomic percent而非重量百分比的一个显著优点是，它提供了更清晰的材料内部原子级相互作用的图景。由于不同元素具有不同的原子量，重量百分比有时可能会产生误导。通过以atomic percent表示成分，科学家可以更准确地预测原子将如何根据其比例相互作用，从而获得对化学反应性、结合力和物理性质的更好见解。总之，术语atomic percent在科学理解材料及其特性的过程中扮演着关键角色。它允许对物质的成分进行精确控制，这对于各种技术的创新至关重要。无论是在开发新建筑材料、提高电子设备的效率，还是理解大气中气体的行为，atomic percent都是连接理论知识与实际应用的基本概念。随着我们在科学和技术上的不断进步，掌握像atomic percent这样的概念的重要性不容忽视，因为它们是许多领域进步的核心。