10.14489/td.2026.06.pp.049-061

2026, 06 June

DOI: 10.14489/td.2026.06.pp.049-061

Kozochkin M. P., Fedorov S. V., Ostrikov E. A., Mustafaev E. S., Shekhtman S. R., Lavreshin N. S., Potapov D. P.
EXPRESS DIAGNOSTICS OF THE PROPERTIES OF TOOL MATERIALS AND WEAR-RESISTANT COATINGS USING LASER PROBING
(pp. 49-61)

Abstract. Research into the development of new tool materials and wear-resistant coatings is being conducted worldwide. The quality of the obtained results depends on many factors, including the composition of the components, their proportions, the conditions for preparing the working mixture, and sintering modes. Selecting the most successful combination of factors is a labor-intensive undertaking, requiring lengthy and costly full-scale testing of cutting tools equipped with inserts made of new alloys. This paper examines a method for quickly assessing the resistance to destructive factors for samples of new material variants. The method is based on the premise that a material's ability to resist external destructive influences is determined by the amount of internal energy of the substance. The internal energy of the substance is estimated by the ratio of the amplitude of the acoustic emission signal generated during laser processing to the volume of material removed by laser pulses. It is assumed that acoustic emission signals arise from the restructuring of the material following a disturbance in the equilibrium of internal forces following the rapid removal of an element of the sample's volume. The article presents data on the results of evaluating specific amplitudes for superhard materials, a hard alloy, and an example of a high-entropy alloy. Specific amplitude values vary significantly among conventional metals, hard alloys, and superhard tool materials such as synthetic diamonds and CBN. Studies of similar tool compositions equipped with CBN inserts revealed different wear rates during finish turning, consistent with their specific amplitude values. The presented studies addressed the possibility of using the specific amplitude metric to test wear-resistant coatings. It was found that this metric can be applied for coating thicknesses of 2 µm or greater by reducing the power and number of laser pulses. The aim of the work is to assess the possibility of using the specific amplitude indicator of acoustic emission to obtain information on the resistance to destructive effects of the developed instrumental materials and the prospects for further development of this area of acoustic diagnostics.

Keywords: laser probing, acoustic emission, spectral analysis, tool materials, wear-resistant coatings, specific amplitude, tool life.

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M. P. Kozochkin, S. V. Fedorov, E. A. Ostrikov, E. S. Mustafaev, S. R. Shekhtman, N. S. Lavreshin, D. P. Potapov (Moscow State Technological University “Stankin”, Moscow, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , shex@inbox., Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

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