Journal Published Online: 29 June 2021
Volume 50, Issue 1

Optimization of Test Conditions for Evaluating Hydrogen Embrittlement Susceptibility of High-Strength Steel for Prestressed Concrete Poles

CODEN: JTEVAB

Abstract

We optimized the test conditions for evaluating the hydrogen embrittlement susceptibility of High-strength steel used in prestressed concrete. Through experiments, we clarified the effects of an applied potential and ammonium thiocyanate (NH4SCN) concentration on hydrogen content. An applied potential of −1.0 V versus Ag-AgCl Electrode (SSE) and an NH4SCN concentration of 1.0 wt. % were optimal for the test. We also determined the dimensions of the test cell and test temperature. Experiments in which we soaked different lengths of specimens and changed the solution volume to specimen area ratio led us to design a test cell with a soaking length of 15 cm and an inner diameter of 8 cm. A test temperature of 50°C was chosen for acceleration of hydrogen embrittlement.

Author Information

Watanabe, Masamitsu
NTT Device Innovation Center, Nippon Telegraph and Telephone Corporation, Atsugi-shi, Kanagawa, Japan
Fujimoto, Norihiro
NTT Device Technology Laboratories, Nippon Telegraph and Telephone Corporation, Atsugi-shi, Kanagawa, Japan
Takeuchi, Yosuke
, Tsukuba-shi, Ibaraki, Japan NTT Device Technology Laboratories, Nippon Telegraph and Telephone Corporation, Atsugi-shi, Kanagawa, Japan
Sawada, Takashi
NTT Device Technology Laboratories, Nippon Telegraph and Telephone Corporation, Atsugi-shi, Kanagawa, Japan
Pages: 12
Price: $25.00
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Details
Stock #: JTE20190542
ISSN: 0090-3973
DOI: 10.1520/JTE20190542