Metal powder sample preparation method for glow discharge mass spectrometry
A glow discharge mass spectrometry and metal powder technology, which is applied in the preparation of test samples, material analysis by electromagnetic means, and material analysis, etc. It can solve the problem that materials with narrow range and high hardness are difficult to apply and are not suitable for powder Problems such as sample preparation and testing, to achieve the effect of not easy to fall off, reduce difficulty, and good mosaic effect
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Embodiment 1
[0049] This embodiment provides a metal powder sample preparation method for glow discharge mass spectrometry analysis, and the sample preparation method includes the following steps:
[0050] (1) The conductive substrate and the mold are cleaned with a mixed solution of nitric acid, hydrofluoric acid and water, and the volume ratio of nitric acid, hydrofluoric acid and water in the mixed solution is 1:1:12; The titanium powder is evenly distributed on the conductive substrate; wherein, the purity of the metal titanium powder is 99.99%, the particle size is 250 mesh, the conductive substrate is indium flakes, and the mass ratio of the metal titanium powder to the indium flakes is 1:10;
[0051] (2) Put the titanium metal powder and the conductive base indium sheet into a polytetrafluoroethylene mold, the shape of the mold is matched with the conductive base, and then heat and pressurize, the heating temperature is 140 ° C, and the pressing pressure is 6MPa, the metal titanium ...
Embodiment 2
[0054] This embodiment provides a metal powder sample preparation method for glow discharge mass spectrometry analysis, and the sample preparation method includes the following steps:
[0055] (1) The conductive substrate and the mold are cleaned with a mixed solution of nitric acid, hydrofluoric acid and water, and the volume ratio of nitric acid, hydrofluoric acid and water in the mixed solution is 1:1.5:20; after cleaning, the metal The titanium powder is evenly distributed on the conductive substrate; wherein, the purity of the metal titanium powder is 99.95%, the particle size is 50 meshes, the conductive substrate is an indium block, and the mass ratio of the metal titanium powder to the indium block is 1:15;
[0056] (2) Put the metal titanium powder and the conductive matrix indium block into a polytetrafluoroethylene mold, the shape of the mold is matched with the conductive matrix, and then heat and pressurize, the heating temperature is 130 ° C, and the pressing pres...
Embodiment 3
[0059] This embodiment provides a metal powder sample preparation method for glow discharge mass spectrometry analysis, and the sample preparation method includes the following steps:
[0060] (1) The conductive substrate and the mold are cleaned with a mixed solution of nitric acid, hydrofluoric acid and water, and the volume ratio of nitric acid, hydrofluoric acid and water in the mixed solution is 1:1.2:8; after cleaning, the metal The titanium powder is evenly distributed on the conductive substrate; wherein, the purity of the metal titanium powder is 99.9%, the particle size is 500 meshes, the conductive substrate is indium flakes, and the mass ratio of the metal titanium powder to the indium flakes is 1:5;
[0061] (2) Put the titanium metal powder and the conductive matrix indium sheet into a PTFE mold, the shape of the mold is matched with the conductive matrix, and then heat and pressurize, the heating temperature is 150 ° C, and the pressing pressure is 8MPa, the met...
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