编辑同志: 今寄上高硅铝合金中硅的测定一法,请多指教。铝硅合金中,硅在5%以上,一般在8～13%之间。合金中铜如作主量元素,一般在1～3%之间。个别的也有超过3%的。锰镁如作主量元素,一般在0.2～1.0%之间。杂质主要是铁、锌和不作为主量元素的铜、锰等。它们的含量都在1.0%以下。硅在5%以上的铝合金,从状态图中可知,在共晶 Editorial comrades: Send high silicon silicon in the determination of a method, please enlighten. Aluminum-silicon alloy, silicon in more than 5%, usually between 8 ~ 13%. Alloy copper as the main element, usually between 1 ~ 3%. Individuals also have more than 3%. Manganese and magnesium as the main element, generally between 0.2 to 1.0%. Impurities mainly iron, zinc and not as the main elements of copper, manganese and so on. Their content is below 1.0%. Silicon in more than 5% of the aluminum alloy, we can see from the state diagram, in the eutectic