The invention discloses a corrosive capable of displaying an ultra low carbon solidification
arborescent structure and a preparation method thereof. The corrosive is prepared from the following components:
picric acid, stannous
chloride,
copper chloride,
hydrochloric acid, surfactant, absolute ethyl
alcohol and
distilled water. The preparation method is as follows: taking a specified amount of the
distilled water, and equally dividing the
distilled water into two parts; mixing and putting
solid medicament into a
glass container according to fixed quantity, and adding one part of the distilledwater into the
solid mixed medicament to dissolve the medicament; adding a specified amount of the absolute ethyl
alcohol into another part of spare distilled water; adding a
hydrochloric acid solution into the absolute ethyl
alcohol solution; mixing the ethyl alcohol and the
hydrochloric acid solution which are poured into an
aqueous solution containing the
solid medicament; fully stirring; and finally adding the surfactant to finish preparing. By utilizing the
reagent provided by the invention, the solidified
arborescent structure forms of ultra low C, S, P
continuous casting steel billets can be displayed clearly, a finish requirement on sample surface is lowered, the
sample preparation working procedure is simplified and the larbour intensity of operators is lowered.