一铝是一种非常年轻的金属。人类炼铜和炼铁已有5000和2000多年的历史,用粘土做陶器已有9000多年历史,而炼铝是138年前才开始的(化学法)。但是铝发展很快,从1944年到1988年的44年间,世界铝年产量增加了19倍,而钢和铜只增加5倍和8倍。铝发展如此之快,说明铝本身在使用上有许多优点;也由于技术进步快,人类逐步认识了 Aluminum is a very young metal. It has been 5,000 and 2,000 years since copper smelting and ironmaking were practiced in the world. It has been more than 9,000 years since pottery was made from clay, and aluminum was started 138 years ago (chemical method). However, the rapid development of aluminum, from 1944 to 1988, 44 years, the world’s aluminum production increased 19 times, while the steel and copper increased only 5 times and 8 times. The rapid development of aluminum shows that aluminum itself has many advantages in use; and as the technology advances rapidly, human beings have gradually realized