aluminium oxide

简明释义

氧化铝

英英释义

例句

1.Researchers are studying the properties of aluminium oxide for use in nanotechnology.

研究人员正在研究铝氧化物的特性，以便在纳米技术中使用。

2.The sapphire crystals are made from pure aluminium oxide.

蓝宝石晶体由纯铝氧化物制成。

3.The ceramic tiles are coated with aluminium oxide to improve their durability.

这些陶瓷砖涂有铝氧化物以提高其耐用性。

4.The abrasive material in sandpaper often contains aluminium oxide for better grinding.

砂纸中的磨料通常含有铝氧化物以提高打磨效果。

5.In the manufacturing of glass, aluminium oxide is used as a refining agent.

在玻璃制造中，铝氧化物被用作精炼剂。

作文

Aluminium oxide, often referred to as alumina, is a compound of aluminium and oxygen. It is a white or nearly colorless crystalline substance that is commonly found in nature as the mineral corundum. In this essay, we will explore the properties, applications, and significance of aluminium oxide (铝氧化物) in various industries and everyday life.First and foremost, the chemical structure of aluminium oxide (铝氧化物) consists of one aluminium atom bonded to three oxygen atoms. This unique arrangement gives it several interesting properties. For instance, aluminium oxide (铝氧化物) is known for its hardness, which makes it an excellent abrasive material. It ranks 9 on the Mohs hardness scale, just below diamond, making it highly effective for polishing and grinding applications.In addition to its hardness, aluminium oxide (铝氧化物) is also chemically stable and resistant to corrosion. This property allows it to be used in environments where other materials might fail. For example, aluminium oxide (铝氧化物) is commonly used as a protective coating for metals to prevent rusting and degradation. Its ability to form a thin layer of oxide when exposed to air enhances the durability of aluminium products, making them more suitable for outdoor use.The applications of aluminium oxide (铝氧化物) are vast and varied. One of the most significant uses is in the production of aluminium metal itself. The Bayer process, which is the primary method for extracting aluminium from bauxite ore, involves refining bauxite to obtain aluminium oxide (铝氧化物). Once extracted, this compound can then be electrolyzed to produce pure aluminium, which is extensively used in construction, transportation, and packaging industries.Furthermore, aluminium oxide (铝氧化物) plays a crucial role in the manufacturing of ceramics. Its high melting point and thermal stability make it an ideal material for producing ceramic tiles and refractory materials that can withstand high temperatures. These ceramics are used in various applications, including cookware, electrical insulators, and even in aerospace components.Another notable application of aluminium oxide (铝氧化物) is in the field of electronics. Due to its excellent insulating properties, aluminium oxide (铝氧化物) is used as a dielectric material in capacitors and as a substrate for electronic circuits. Its ability to withstand high voltages makes it particularly valuable in the production of semiconductors.In recent years, the demand for aluminium oxide (铝氧化物) has increased significantly due to its environmental benefits. As a key component in the production of lightweight materials, aluminium oxide (铝氧化物) contributes to energy efficiency in vehicles and aircraft, helping to reduce fuel consumption and greenhouse gas emissions. Moreover, the recycling of aluminium scrap involves converting it back into aluminium oxide (铝氧化物), showcasing its sustainability in the circular economy.In conclusion, aluminium oxide (铝氧化物) is a versatile compound with numerous applications across various industries. Its unique properties, such as hardness, chemical stability, and insulating capabilities, make it an essential material in manufacturing processes, electronics, and environmental sustainability efforts. Understanding the significance of aluminium oxide (铝氧化物) not only highlights its importance in modern technology but also emphasizes the need for continued research and development in this field.