Hot Corrosion of Ti–Re Alloys Fabricated by Selective Laser Melting

• DOI: 10.1007/s11085-017-9825-2
• Publication Date: 2017-12-18T02:16:27Z
• Authors: Kamil Majchrowicz; Zbigniew Pakieła; Dorota Moszczyńska; Tomasz Kurzynowski; Edward Chlebus
• Keywords: 02 engineering and technology; 0210 nano-technology

Selective laser melting (SLM) is an additive manufacturing process that enables novel alloy production by combining metals with significantly different physical properties. In this paper, the hot corrosion behavior of Ti–Re alloys fabricated by SLM was studied in a mixture of Na2SO4 and NaCl salts at 600 °C. The morphology and composition of the corrosion products were characterized by scanning electron microscopy with energy-dispersive X-ray spectroscopy and X-ray diffraction to understand the degradation mechanisms. It has been shown that the hot corrosion resistance of Ti–Re alloys was influenced by the chemical inhomogeneity of the oxide scale resulting from the presence of rhenium particles undissolved during the SLM process.