Diffusion permeability of yttrium-based heat-resistant ion-plasma coatings

2016 ◽  
Vol 117 (9) ◽  
pp. 896-900
Author(s):  
V. S. Goncharov ◽  
M. V. Goncharov ◽  
E. V. Vasil’ev
2021 ◽  
pp. 14-22
Author(s):  
F.N. Karachevtsev ◽  
◽  
V.I. Titov ◽  

In the work, the development of technologies for the manufacture and production of standard samples of heat-resistant nickel-based alloys: SDP-1, SDP-2, VSPD-9, VZhL-2, AZh-8. Developed and certified by MI 1.2.027–2011 «Method of measuring alloying elements by x-ray fluorescence method in heat-resistant alloys» establishes the measurement of the dimensions of alloying elements in heat-resistant nickel-based alloys by x-ray fluorescence method. The registration of the RSA of heat-resistant nickel-based alloys SDP-1, SDP-2, VSPD-9, VZhL-2, AZh-8 in the System of voluntary certification of standard samples of materials and materials.


2020 ◽  
Vol 17 (34) ◽  
pp. 459-468
Author(s):  
Oksana A BYTSENKO ◽  
Igor G STESHENKO ◽  
Vladimir A PANOV ◽  
Victor V TISHKOV ◽  
Alexey B MARKOV

The development of aerospace engineering and mechanical engineering directly depends on the development of new metal materials and advanced technologies. The problem of creating materials and their types of processing to increase the level of operational properties is relevant in connection with the complication and tightening of working conditions of modern technologies. One of the most important tasks of contemporary aircraft construction is to increase the operational properties of the surface layer. The purpose of the article is to elucidate the effect of high-current electron beams of microsecond duration on changes in the surface layers of the heat-resistant multicomponent ion-plasma coating Ni-Cr-Al-Y under various conditions. Using a complex of metallophysical research methods, the physicochemical and structural-phase states of the surface layer were studied before and after modification of the samples. These samples were coated with heat-resistant condensed ion-plasma coatings of three different compositions using nine high-current electron beams in 9 modes with different values of electron energy and number of pulses in the selected interval of electron energy. An analysis of the structural phase changes occurring during modification was carried out. Cylindrical samples of targets made of heat-resistant nickel alloy ZhS36 coated with ion-plasma condensed multicomponent coating SDP-2 + VSDP-16. These samples were used according to serial technology, both with subsequent modification using highcurrent electron beams and without modification. It was found that chromium in the initial state is unevenly distributed: chromium is present in the particles; the matrix is depleted in chromium. The research results can be useful for scientists to study the properties of heat-resistant multicomponent ion-plasma coatings Ni-Cr-Al-Y and the effect of high-current electron beams on it, as well as for the manufacture of more heat-resistant materials in aerospace engineering and mechanical engineering.


Author(s):  
Diana Hlushkova ◽  
Alexander Voronkov ◽  
Natalia Kalinina ◽  
Vasily Kalinin ◽  
Sergey Demchenko ◽  
...  

Author(s):  
K. V. Diadiun

Providing an increase in the working capacity of a metal-cutting tool, it is possible to significantly increase the productivity of mechanized labor, thereby reducing the cost of purchasing a new tool and saving on other accompanying technological components. During the operation of the cutting tool, the main load is transferred to its working part, this, as a rule, leads to partial wear or complete destruction of the planes and cutting edges. There are a number of technologies for processing working surfaces, which provides them with additional strengthening, the most effective of which is the method of applying special coatings to the surface of the cutting tool. Taking into account the specifics of the processes of formation of coatings, they can be divided into three main groups [1]. The first group includes methods in which the formation of coatings is carried out mainly due to diffusion reactions between saturating elements and structures of the instrumental material. The second group includes methods of forming coatings by a complex mechanism. The third group includes methods of forming coatings due to chemical and plasma-chemical reactions of particle flux simultaneously in volumes of space immediately adjacent to the saturable surfaces of the instrumental base. One such technology is the CIB (condensation and ion bombardment) method, which is a physical deposition of coatings. The most characteristic feature of coatings produced by this method is the absence of a transition zone between the coating and the tool material. This makes it possible to obtain a complex of properties on the working surfaces of the tool without deteriorating its original properties. The article is devoted to the issues of increasing the efficiency of ion-plasma technologies through the development and implementation of an automated system for analyzing and controlling the mass balance of reagent gases under conditions of several gases supply. Thus, the improvement of the technology of coating the working surfaces of the cutting tool, namely, the effective control of the process of applying ion-plasma coatings with the introduction of an automated system for analyzing and controlling the mass balance of reagent gases under conditions of supplying several gases is an urgent task.


2017 ◽  
pp. 7-7
Author(s):  
D.S. Gorlov ◽  
◽  
V.I. Skripak ◽  
S.A. Muboyadzhyan ◽  
L.P. Egorova ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document