PT Journal
AU Michalcova, A
   Msallamova, S
   Fink, D
   Kubasek, J
   Friak, M
TI The Microscopic Study of the Evolution of the Phase Transformation in the Tin after the Indentation of an Inoculator
SO Manufacturing Technology Journal
PY 2024
BP 83
EP 86
VL 24
IS 1
DI 10.21062/mft.2024.007
DE Tin Pest; Microscopy; Pictures; Inoculator
AB This paper describes β-Sn to α-Sn transformation in its initial phase. This process is also known as a tin pest and currently it causes problems mainly in the field of soldering materials. To avoid misrepresenta-tion of the results of artificial ageing of the samples; we have decided to use historical materials for our study. A sample from historical organ pipes was indented by naturally formed α-Sn polycrystalline parti-cles by the load of 1 kg. The sample in the initial state was observed by SEM and analysed by EBSD mapping. The position of inoculator particles was documented again by SEM observation. Subseqently, the sample was freezed at -50 °C. The evolution of cracks started after 2.5h in the vicinity of indented α-Sn particle. After 5 h of freezing, new cracks were observed also in the untouched parts of the sample. The crystallografical interconnectedness was not proven for polycrystalline samples.
ER