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资料测定碳化钨游离碳,用氯氟酸—硝酸在铂皿中分解试样,碳化钨溶解,游离碳不溶解,用气体容量法或重量法进行测定。缺点是氢氟酸使环境污染对人体毒害较大。资料介绍游离碳吸附有机染料,其吸附量正比于游离碳的含量,以此法测定碳化钨中游离碳。但实验得出碳化钨粉末大小、形状及其中游离碳大小、形状不同,对吸附有机染料产生不同的影响;另一方面该法不适用于低于万分之五以下的含量。经我们试验发现,1:1的过氧化氢能将碳化钨完全分
Data Determination of tungsten carbide free carbon, with chlorofluoric acid - nitric acid in platinum dish decomposition of the sample, dissolved tungsten carbide, free carbon is not dissolved, measured by gas volume method or gravimetric method. The disadvantage is that hydrofluoric acid causes greater environmental pollution on the human body. Information on free carbon adsorption of organic dyes, the adsorption capacity is proportional to the content of free carbon, tungsten carbide in this method for the determination of free carbon. However, the experiment shows that the size and shape of the tungsten carbide powder and the size and shape of the free carbon therein have different effects on the adsorption of the organic dye. On the other hand, the method is not suitable for the content below 5%. After our experiment found that 1: 1 hydrogen peroxide can be completely divided tungsten carbide