20.500.12556/RUL-188831 Izdelava in karakterizacija spoja med titanom in bakrom diplomsko delo Fabrication and characterization of a joint between titanium and copper diploma work Cilj diplomske naloge Izdelava in karakterizacija spoja med titanom in bakrom je bil ugotavljanje lastnosti takšnega spoja z namenom aplikacije v medicini. Navarjali smo tehnično čisti baker na površino substrata, ki je bil titanova zlitina Grade 23 ELI. Spoj smo izvedli z laserskim navarjenjem na devetih vzorcih ter ga analizirali na treh vzorcih, tako na mikro kot tudi na makro nivoju. Laserske navare smo lahko primerjali med sabo ter analizirali glede na parametre oziroma robne pogoje v katerih so bili ustvarjeni. Analizo smo izvedli z vrstično elektronsko mikroskopijo, tako po metodi sekundarnih elektronov kot tudi po metodi povratno sipanih elektronov. Opravili smo tudi linijsko kemijsko analizo na vseh treh preiskovanih vzorcih, da smo dobili jasno sliko o tem, kako se kemijska sestava navara spreminja od površine proti substratu, oziroma koncentracijo posameznih elementov v navaru, glede na oddaljenost od površine. Izračunali smo tudi trdoto navarov od površine, kjer je bil navarjen tehnično čisti baker pa proti jedru, substratu titanove zlitine Grade 23 ELI. Trdoto smo izmerili na območjih, ki so bili analizirani tudi s linijsko kemijsko analizo, da smo imeli sliko, kako koncentracija prisotnih elementov v zvaru vpliva na trdoto navara. The aim of the diploma work, Fabrication and Characterization of a Titanium–Copper Joint, was to determine the properties of such a joint with a view to its potential application in medicine. Technically pure copper was deposited onto a substrate made of Grade 23 ELI titanium alloy by means of laser welding. The weld deposits were produced on nine specimens, while three specimens were subsequently analyzed at both the microstructural and macroscopic levels. The laser weld deposits were compared with one another and analyzed with regard to the processing parameters and boundary conditions under which they were produced. The analysis was performed using scanning electron microscopy (SEM), employing both secondary-electron and backscattered-electron imaging modes. In addition, line-scan chemical analyses were carried out on all three investigated specimens in order to obtain a clear understanding of how the chemical composition of the weld deposit changed from the surface toward the substrate. This also enabled the concentration of individual elements within the weld deposit to be determined as a function of the distance from the surface. The hardness of the weld deposits was also measured, starting at the surface, where technically pure copper had been deposited, and proceeding toward the core of the Grade 23 ELI titanium-alloy substrate. Hardness measurements were performed in the same regions that had been examined by linescan chemical analysis. This made it possible to determine how the concentration of the elements present in the joint influenced the hardness of the weld deposit. titan baker laser navar vrstična elektronska mikroskopija titanium copper laser welding weld deposit scanning electron microscopy true false false D. Vuga Slovenski jezik Angleški jezik Diplomsko delo/naloga 2026-09-29 09:00:31 2026-09-29 09:00:45 2026-10-06 08:07:34 0000-00-00 00:00:00 2026 0 Ljubljana 0 Ljubljana XIII, 35 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 669 117982 293771267 32033.pdf 32033.pdf 1 17E0A5A8E6C2D27A30C951645C415F97 4c05a083aee7498f849d11cf41d69a378de2ced09c8299a27908dbf2bcb7cca4 64a21c62-bbd3-11f1-8bc5-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=249187 Naravoslovnotehniška fakulteta 0 0 0