Effect of Cultivation Conditions on Tin Whisker Growth on Ti2SnC

Abstract

Tin whisker growth behavior has resisted interpretation for approximately 70 years due to many intricate influencing factors and its unpredictability. In this work, tin whisker growth behavior on Ti 2 SnC under different cultivation conditions was investigated to understand the underlying mechanisms. It was found that higher tin whisker growth propensity is reached at higher cultivation temperature or in an oxidizing cultivation atmosphere, and whisker nucleation can be accelerated at elevated temperature. Furthermore, the whiskers formed in argon gradually evolve into a faceted morphology, which is driven by the reduction of surface energy. The findings herein provide valuable clues of tin whisker growth.

The study on modulable tin whisker growth behaviors and mechanisms on Ti2SnC

“…Ti2SnC with a certain amount of elemental Sn (Ti2SnC/Sn) was fabricated using pressure-less sintering method, the detailed parameters can be found in Ref [16]. The Ti2SnC/Sn was milled at 500 r/min for 1h with a charge ratio of 10:1, and then cold-pressed into discs (φ 15mm) under 200 MPa, 400 MPa, 600 MPa, 800 MPa and 1000 MPa, respectively.…”