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近年来,在轴瓦材料中加入了镍铝等元素,使其耐磨、坚用,其成份含有铜75％、锰12％、铝8％、铁3％、镍2％,简称12—8—3—2。通常试样采用盐酸—过氧化氢分解,各元素用比色或分离干扰后用比色和容量法单独测定,手续繁杂,而工厂试验室需要简单、快速、经济效益高的分析方法。本试验根据试样特性,采用稀硝酸分解,除铜外,其余四元素在一份试液中测定。 一、分析步骤:称0.2000克试样于150毫升烧杯中,加10毫升(1+1)硝酸,溶毕,驱尽氮氧化物,冷却,移至200毫升容量瓶中,稀释至刻度,摇匀,此为测铁、镍、锰、
In recent years, the bearing material is added nickel and aluminum and other elements, making it wear-resistant, firm, and its components contain 75% copper, 12% manganese, 8% aluminum, iron 3%, nickel 2%, referred to as 12-8- 3-2. Hydrochloric acid is usually used sample - Hydrogen peroxide decomposition, the various elements with colorimetric or separation of colorimetric and volumetric method after the separate determination of complex procedures, and the factory laboratory requires a simple, rapid and cost-effective analysis. The test according to the characteristics of the sample, the use of dilute nitric acid decomposition, in addition to copper, the remaining four elements measured in a test solution. First, the analysis steps: Weigh 0.2000 grams of sample in a 150 ml beaker, add 10 ml (1 +1) nitric acid, dissolved Bi, drive for nitrogen oxides, cooled and moved to 200 ml volumetric flask, diluted to the mark, shake Even, this is measured iron, nickel, manganese,