Method for preparing standard sample for testing content of hard-alloy components and method for testing content of hard-alloy components

Abstract

The invention discloses a method for preparing a standard sample for testing the content of hard-alloy components by adopting the X-ray fluorescence spectrometry and a method for testing the content of hard-alloy components by adopting the X-ray fluorescence spectrometry. The method for preparing the standard sample comprises the following steps: preparing a variety of high-purity single oxide glass fuse pieces under the same condition of preparing glass fuse pieces of the sample under test; grinding the high-purity single oxide glass fuse pieces into powder and filling the powder into bottles respectively; weighting the powder of the high-purity single oxide glass fuse pieces, which comprises a variety of elements under test in the sample under test, to prepare the standard sample, wherein the range of the content of a variety of elements of the standard sample covers the range of the content of a variety of elements of the sample under test; and finally preparing the glass fuse pieces of the standard sample according to the method. A working curve is made by using the glass fuse pieces of the standard sample, and then the content of a variety of elements of the hard alloy sample under test are tested by adopting the X-ray fluorescence spectrometry. Due to the adoption of the standard sample prepared by using the method of the invention, the limit to the detection method of the hard alloy, which is caused by the standard sample, can be eliminated, the accuracy of the result can be improved, and the application range of the X-ray fluorescence spectrometry can be expanded.

Description

technical field [0001] The invention belongs to the technical field of X-ray fluorescence spectrometry analysis, in particular, it relates to a method for measuring samples by X-ray fluorescence spectrometry and a method for preparing standard samples used therein, and more specifically, relates to a method for measuring X-ray fluorescence spectrometry Methods of cemented carbide compositions and the preparation of standard samples for their use. Background technique [0002] There are many grades of cemented carbide, and the range of element content of various product grades varies greatly, and the content of each component directly affects the performance of the finished cemented carbide. Therefore, it is necessary to quickly and accurately determine The content of each metal element in the pre-sintering mixture of cemented carbide and cemented carbide products is particularly important. X-ray fluorescence spectrometry is widely used because of its fast analysis speed, hi...

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Problems solved by technology

[0006] ① Since most elements of tungsten-based cemented carbide are extremely difficult to dissolve, it is necessary to use highly corrosive hydrofluoric acid and it is extremely difficult to digest at room temperature, and adding unnecessary impurity elements to the standard solution will introduce unnecessary impurity elements, and it must be dried to test sample, high operating requirements

[0007] ②Chemical methods must be used to determine the value after the artificial standard samples are prepared according to the same process as the production method, and the workload is relatively large

[0008] ③The method of directly weighing high-purity oxides to prepare standard samples, the sample size is too small, resulting in large errors; but if the sample size is increased for preparation, it is necessary to grind the high-purity oxides to uniformity, and the high-purity Oxide is not uniform, takes too long to grind and stains easily

[0009] So far, the existing standard sample preparation technology still cannot solve the above problems

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