Peculiarities of the diffusion zone formation of the platinum-titanium compound
| Autor: | Anatoliy Sanin, Igor Mamchur, Yevhen Dzhur, Stella Mamchur, Tetjana Nosova |
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| Jazyk: | English<br />Ukrainian |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Авіаційно-космічна техніка та технологія, Vol 0, Iss 4sup2, Pp 119-122 (2022) |
| Druh dokumentu: | article |
| ISSN: | 1727-7337 2663-2217 |
| DOI: | 10.32620/aktt.2022.4sup2.18 |
| Popis: | This paper considers the possibility of obtaining a high-quality titanium-platinum compound. Difficulties in joining dissimilar metals lie in the fact that during their interaction, brittle intermetallic compounds are formed, which cause the destruction of the product during the operation. Hard-phase welding methods are used to control the thicknesses and dimensions of intermetallic inclusions. Vacuum diffusion welding was chosen as the technology. To determine the formation of phases in the diffuse zone, the phase diagram of Ti-Pt was analyzed. The possible types of interactions between the components were determined. It is determined that the formation of a welded joint occurs due to the formation and growth of a diffusion zone in platinum and titanium. During welding, the growth of intermetallic phases Ti3Pt, TiPt, TiPt3, as well as solid solution zones, is observed. Microsections were made, on which the microstructure of the platinum-titanium compound was studied and microhardness measurements were carried out. The total width of the transitional diffusion layer is determined. The studies carried out made it possible to establish the sequence of the phase components of the diffusion zone. The use of the DRON 1.5 diffractometer made it possible to identify the phases. X-ray diffraction maxima and calculation of line identification established the presence of intermetallic compounds and their mixtures with solid solutions. The following methods were used in the work: microstructural analysis, microhardness measurement, the determination of the phase composition. A special technique was used to obtain high-quality microsections. During long-term grinding in the diffusion zone, a degree is formed due to the different properties of titanium and platinum. The phase composition of the platinum-titanium compound and the extent of each zone were established. The experiments carried out indicate that pressure, temperature and exposure time affect the quality of the joint. By changing these welding parameters, it is possible to change the microstructure of the diffusion zone. To determine the mechanical properties, a tear test was performed. For this, special three-metal samples were made. Determination of the mechanical properties made it possible to establish by what parameters the platinum-titanium compound meets the requirements of operation. |
| Databáze: | Directory of Open Access Journals |
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