Topic
Polythionic acid
About: Polythionic acid is a research topic. Over the lifetime, 66 publications have been published within this topic receiving 401 citations.
Papers published on a yearly basis
Papers
TL;DR: In this article, the intergranular cracking tendencies of fourteen stainless steels and two high-nickel alloys were evaluated by exposing numerous specimens to polythionic acid and standard acid copper.
Abstract: Intergranular cracking tendencies of fourteen stainless steels and two high-nickel alloys have been evaluated by exposing numerous specimens to polythionic acid and standard acid copper su...
40 citations
TL;DR: In this article, it was shown that S 4 O 6 2− and S 2 O 3 2− do not function simply as sources of sulfide to promote hydrogen permeation and embrittlement.
40 citations
TL;DR: In this article, the amount of copper in a sulfide (Cu x S) layer formed after the sulfured polymer treatment with a solution of Cu(I-II) salt is strongly dependent on the concentration of sulfur in the PE and PA.
22 citations
TL;DR: In this paper, a tetra-thionic potassium (K2S4O6) chemical solution was used to mimic polythionic acid SCC which is the most aggressive SCC type.
Abstract: Intergranular stress corrosion cracking (SCC) mechanism in sensitized stainless steel (Type 304) was investigated experimentally. A tetra-thionic potassium (K2S4O6) chemical solution was used to mimic polythionic acid SCC which the most aggressive SCC type. During the SCC test, the steel specimen was subjected to three-point bending with constant strain at room temperature, and simultaneous monitoring of acoustic emission and corrosion potential were employed to monitor SCC initiation and progression. At the early stage, transient phenomenon of local anodic dissolution was observed. Upon initiation of SCC, passivation film fracture and dissolution of metal at specimen surface take place. Through microscopic observation of SCC tip, it was found that the SCC tip advanced along the grain boundary with further mechanical loading. This suggested that the stress component plays a significant role of SCC propagation, in addition to the effect of the localized metal dissolution along Cr-depleted grain boundaries.
19 citations
TL;DR: In this article, the heat exchanger tubes of a hydrocracker unit in an oil refinery developed cracks at the bent sections after about 48h of operation at 400°C following a period of downtime.
17 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2019 | 1 |
| 2018 | 2 |
| 2017 | 1 |
| 2016 | 2 |
| 2015 | 2 |
| 2014 | 2 |