ELEKTROOSADZANIE CYRKONU Z ROZTWORU DMSOInvestigations of voltammetry zirconium deposition from DMSO solution on different substrates were taken. It was found that this is multi-electron process proceeding in a few stages. Moreover, zirconium layers were obtained on titanium, copper stainless steel and nickel. Obtained deposit was in form of white powder, which immediately was oxidized to ZrO 2 in the presence of air.Keywords: zirconium; DMSO; electrodeposition; voltammetry W pracy przedstawiono badania woltamperometryczne procesu elektroosadzania cyrkonu z roztworu DMSO na różnych podłożach. Stwierdzono, że jest to procees wieloelektronowy zachodzący w kilku etapach. Ponadto otrzymano warstwy cyrkonu na tytanie, miedzi, stali kwasoodpornej i niklu. Wytworzony osad katodowy miał formę białego proszku, na skutek natychmiastowego utlenienia cyrkonu w kontakcie z powietrzem.

This study presents results of vacuum diffusion brazing of Grade 2 titanium with 6082 (AlMg1Si0.6Cu0.3) aluminium alloy using B-Ag72Cu-780 (Ag72Cu28) grade silver brazing metal as an interlayer. Brazed joints underwent shear tests, light-microscopybased metallographic examinations and structural examinations using scanning electron microscopy (SEM) and X-ray energy dispersive spectrometry (EDS). The highest quality and shear strength of 20 MPa was characteristic of joints brazed at 530°C with a 30-minute hold. The structural examinations revealed that in diffusion zone near the boundary with titanium the braze contained solid solutions based on hard and brittle Ti-Al type intermetallic phases determining the strength of the joints.

Lutowność tytanu w warunkach płomieniowego lutowania twardego pod osłoną topnika titanium brazability in torch-heated conditions under the flux cover Pro dr a inż igniew ir ki Politechnika Wrocławska, mgr inż awid a ew ki Instytut Spawalnictwa w Gliwicach. Stre zczenieW artykule przedstawiono podstawowe problemy związane z lutowaniem tytanu w osłonie topnikowej. Podano mechanizm zykochemicznego oddziaływania topników na powierzchni tytanu podczas procesu lutowania. Zamieszczono wyniki badań recepturowo-technologicznych, realizowanych w Instytucie Spawalnictwa w Gliwicach, nad specjalistycznym topnikiem do płomieniowego lutowania twardego. Omówiono właściwości lutownicze topnika oraz przedstawiono badania metalogra czne połączeń wykonanych z jego użyciem.

Braze weldIng TIg of TITanIum and alumInIum alloy Type al -mgThe article presents the course and the results of technological tests related to TIG-based arc braze welding of titanium and AW-5754 (AlMg3) aluminium alloy. The tests involved the use of an aluminium filler metal (Al99.5) and two filler metals based on Al-Si alloys (AlSi5 and AlSi12). Braze welded joints underwent tensile tests, metallographic examinations using a light microscope as well as structural examinations involving the use of a scanning electron microscope and an X-ray energy dispersive spectrometer (eDS). The highest strength and quality of welds was obtained when the Al99.5 filler metal was used in a braze welding process. The tests enabled the development of the most convenient braze welding conditions and parameters.

Jakość w lutowaniu twardym i lutospawaniu-kwalifikowanie technologii i personelu, metody badań The quality of brazing and braze welding-qualification of technology and personnel, test methods Dr inż. Andrzej Winiowski, prof. nzw. w IS; dr inż. Dawid Majewski-Instytut Spawalnictwa Gliwice.

This article explores the possibilities of using non-destructive ultrasonic techniques to analyze the quality of lapped braze-welded joints. The tests were performed for 4 material groups (DC03+ZE steel and X5CrNi18-19 steel, aluminum alloys AW-5754 and AW-6061, titanium Grade 2 and copper Cu-ETP). As part of the work, additional materials and joint processes and its parameters were selected (TIG, MIG, laser). The quality of joints was monitored using scanning acoustic microscopy. Based on the A-scan andC-scan images, potential joints imperfections were determined. The possibilities of using advanced ultrasonic techniques to analyze the quality of braze joints was assessed.

Brazing of magnesium alloys Dr inż. Andrzej Winiowski, prof. nzw. IS; dr inż. Dawid Majewski-Instytut Spawalnictwa w Gliwicach.

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