Several experiences with the use of titanium heat exchangers in refining processes are summarized. These involve distillation column overhead condensers in atmospheric crude distilling units, fluid catalytic cracking units, delayed coking units, and sour water strippers. The causes of problems are discussed. Needs for additional data are highlighted.
Results of laboratory testing of a new technology for mitigating galvanic corrosion. Incorporated into a device, referred to as the galvanic corrosion inhibiting coupling (GCIC) or bi-electrode device (BED), it creates an ohmic potential drop within the pipe and minimizes the polarization of the dissimilar metals.
An unexpected explosion occurred in the vent line connecting at the top of a titanium reactor that was used to make a fire-retardant fabric. In this presentation the cause for this accident will be discussed based on the findings in examining samples from the vent line and the results of high-temperature tests.
Complications occur in orthopedic surgery. Corrosion of magnesium W4 alloy was investigated in vitro by electrochemical methods in solutions replicating the body's environment. To control the biodegradation of titanium and magnesium implants, bio active PEO coatings are essential for biomedical implants.
Modern structural biomedical implants utilize titanium alloys. A major mode of failure is aseptic loosening, by the release of particles from the implants, leading to excessive bone erosion. Boron is a promising alloying element that can reduce inflammation, alleviate arthritis, and help with bone growth. This study is to compare corrosion behavior of Ti64 with and without boron,
Currently UNS R56400 (Ti-6Al-4V; Ti64) is common structural implant material. But it releases metal ions into the body, which are associated with neurological disorders, inflammation, pain and loosening of the implant. Electrochemical methods were used to quantify the stability of two other alloys in a range of physiological media.