【作者】 宋庆芳； 姚荣灿；

【Author】 Song Qingfang,Yao Rongcan (Guangdong Police College,Guangzhou 510230)

【机构】 广东警官学院；

【摘要】 钢材是制造机动车车架的常用材料,采用化学腐蚀显现钢材表面潜在冲刻字迹是公共安全领域中的常用技术。依据化学原理,以制造机动车车架的钢板为客体,以硝酸作氧化剂,氢氟酸作配位剂,分别与水、冰醋酸和丙酮组成显现试剂。研究三种不同试剂对钢板表面潜在冲刻字迹的显现效果,探讨产生不同显现效果的原因。更多还原

【Abstract】 Steel is a material that widely used to manufacture vehicle frames.The recovery of underlying imprint on steel surface by chemical etching is a common technique used in the field of public security.The research employs the steel plate used in the manufacture of vehicle frames as the object of study,and the recovery reagents compose of nitric acid as oxidizing agent,hydrofluoric acid as complexing agent,and water,glacial acetic acid or acetone as cosolvent,based on chemistry principles.The degrees of recovery of the underlying imprint on steel plates by the three formulations are compared,and the causes of the differences are discussed.更多还原