Solution for separating solid solution and compound in Mg-Zn-based magnesium alloy and method for measuring solid solution amount of element
A determination method and mg-zn technology, applied in the field of physical and chemical detection, can solve the problems of indirect measurement objects, difficult to satisfy sensitivity and measurement accuracy, and difficult to accurately quantify, and achieve simple determination methods, high reliability of determination results, and measurement objects. immediate effect
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[0034] In the present invention, the preparation method of the solution preferably comprises the following steps:
[0035] (1) mixing ammonium benzoate, 2,2'-bipyridyl, salicylic acid and methanol to obtain the first mixed solution;
[0036] (2) Mix the first mixed solution with dioxane to obtain the solution.
[0037] In the present invention, adding dioxane at the end is beneficial to improving the dissolution rate of ammonium benzoate, 2,2'-bipyridine and salicylic acid in methanol. The present invention has no special limitation on the specific mixing process, and it is better to dissolve ammonium benzoate, 2,2'-bipyridine, salicylic acid and dioxane in methanol.
[0038] The invention provides a method for determining the solid solution content of elements in a Mg-Zn-based magnesium alloy, comprising the following steps:
[0039] (1) Place the Mg-Zn-based magnesium alloy in a phase separation solution for chemical phase separation. After the reaction system is subjected...
Embodiment 1
[0082] The tested magnesium alloy is Mg-3%Zn-0.5%Zr, the Zn content of the test round bar is 3.41wt.%, and the Zr content is 0.54wt.%.
[0083] The determination process of the solid solution amount of Zn and Zr elements is as follows:
[0084] Polish the surface of the alloy test round bar with sandpaper, wipe the turning tool and the test round bar with acetone, turn the test round bar to obtain flake sample debris with a thickness of about 0.1mm, wash with acetone and dry at room temperature;
[0085] Add 0.2g of ammonium benzoate, 0.05g of 2,2'-bipyridine and 0.15g of salicylic acid to 70mL of methanol to dissolve, then add 30mL of dioxane to dissolve and mix well to obtain the Mg-Zn-based magnesium alloy for separation The solution of medium solid solution and compound (hereinafter referred to as solution), standby;
[0086] The solution was placed in a semiconductor cold trap and cooled to -10±1°C, and 100.4mg (W 1 ) of the above-mentioned sample fragments are added to...
Embodiment 2
[0096] The tested magnesium alloy is Mg-6%Zn-0.5%Zr, the Zn content of the test round bar is 5.86wt.%, and the Zr content is 0.57wt.%.
[0097] The determination process of the solid solution amount of Zn and Zr elements is as follows:
[0098] Polish the surface of the alloy test round bar with sandpaper, wipe the turning tool and the test round bar with acetone, turn the test round bar to obtain flake sample debris with a thickness of about 0.1 mm, wash it with acetone and evaporate to dryness.
[0099] According to the formula of 0.2g ammonium benzoate + 0.05g 2,2'-bipyridine + 0.15g salicylic acid + 70mL methanol + 30mL dioxane, ammonium benzoate, 2,2'-bipyridine and salicylic acid Add it into methanol to dissolve, then add dioxane to dissolve and mix well, and prepare a solution for separating solid solution and compound in the alloy (hereinafter referred to as solution).
[0100] The solution is placed in a semiconductor cold trap and cooled to a temperature range of -1...
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