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鳞爆是指搪瓷层自身产生的大小不等、深度不一的半月型剥落现象,是使搪瓷制品报废的主要原因之一。前人多认为鳞爆由氢引起。一般采用超低碳或合金化方法提高钢材储氢能力防止鳞爆。试片经电解抛光,单面镀Ni。电镀液为NiSO_4+NiCl_2,电流密度10mA/cm~2,时间1min。试片装在电解池中,池分两室。镀Ni面一侧注入0.2N NaOH溶液,施以+0.2V过电位(相对于Hg-HgO参比电极)。未镀Ni的面与一辅助电极构成电解析氢回路。生成的氢被试片吸收并向
Scale explosion refers to the enamel layer itself produced by the size of different depths of the half-moon-like spalling, enamel products is to scrap one of the main reasons. Many people think that the former caused by hydrogen explosion. Ultra-low carbon or alloying methods are generally used to increase the hydrogen storage capacity of steel to prevent scale explosion. Specimens polished by electrolysis, Ni plating on one side. The plating solution is NiSO_4 + NiCl_2, the current density is 10mA / cm ~ 2, the time is 1min. Test piece installed in the electrolytic cell, the pool points two rooms. The side of the Ni-plating was filled with 0.2N NaOH solution and applied with + 0.2V overpotential (relative to Hg-HgO reference electrode). An unplated surface and an auxiliary electrode form an electrolytic hydrogen evolution circuit. The generated hydrogen is absorbed by the test piece and toward