论文部分内容阅读
制备好的金相试样放置时间长久会在试样表面形成氧化物、腐蚀产物及麻点,从而失去金相组织的真实形貌,影响金相组织的鉴别。经反复试验得到一种试剂,可代替繁琐的抛光、侵蚀等工序,节省了人力物力和时间,尤其对一些比较软的难制备的金相试样,如铜、铝、锡等更有意义。试剂配方:四氯化碳(20ml),酒精(60ml),盐酸(4～6ml)。试剂适用范围:适用铁、钢和锡试样。若在该试剂略滴几滴硫酸,适用钢及铜合金试样;若在该试剂略滴几滴硝酸,适用铝及铝合金试样。
Metallographic sample prepared for a long time will be placed in the sample surface oxide, corrosive products and pitting, which lost the true shape of the microstructure, affecting the identification of the microstructure. After repeated experiments to obtain a reagent, can replace the tedious process of polishing, erosion and other processes, saving manpower and material resources and time, especially for some of the more difficult to prepare the metallographic sample, such as copper, aluminum, tin and more meaningful. Reagent formula: carbon tetrachloride (20ml), alcohol (60ml), hydrochloric acid (4 ~ 6ml). Reagents Scope: For iron, steel and tin samples. If the reagent a few drops of sulfuric acid, for steel and copper alloy samples; if the reagent a few drops of nitric acid, for aluminum and aluminum alloy samples.