Titanium corrosion

Virtually all metallurgies can be attacked by corrosive bacteria. Cases of titanium corrosion are, however, rare. Copper alloys are not immune to bacterial attack however, corrosion morphologies on copper alloys are not well defined. Tubercles on carbon steel and common cast irons sometimes contain sulfate-reducing and acid-producing bacteria. Potentially corrosive anaerobic bacteria are often present beneath... 

Titanium corrosion-resistent special apparatus (nitric acid, hot lower carboxylic acids)... 

Titanium corrosion also was observed during oxidation of cutting oil that contained sulfur and chlorine. For these tests, the SCWO system was operated at 600°C (1,112 F) and 3,400 psig (SWEC, 1996). Severe crevice and pitting corrosion were noted. In this study, acidic and reducing conditions (indicated by the presence of hydrogen sulfide) were present locally within the reactor. The operating period was approximately 50 hours. 

GLS-630, SS-640 Clean (flush) Titanium corrosion Periodic flushing... 

The results indicate when titanium is in the active state and corrodes at /corr.Ti = 0.162 A/ cm. Titanium passivates at /pass= 10 A/cm at a critical pasivating potential of Ecrit=-0. 73 V vs. SHE when coupled with Pt. The critical passivation potential is more negative than the corrosion potential of the couple E(-on ji-Pt= — 0.14 V vs. SHE. The corrosion rate of the couple decreases to 0.01 A/cm from 0.162 A/cm observed at the titanium corrosion potential, E on- xi=— 1.009 V due to Ti passivation at —0.73 V when coupled with Pt. 

Shibata, T, and Zhu, Y C. [1995]. Effect of film formation conditions on the structure and composition of anodic oxide-films on titanium. Corrosion Set, 37, pp. 253-270. 

Titanium Corrosion Rate Data- Commercially Pure Grades... 

Of the various in-pile loop experiments listed in Table 5-9, all but those designated DD, GG, and FF were concerned in part with titanium corrosion. In addition to the in-pile tests, one semuting-type experiment was made of the effect of fast electrons from a van de Graaff accelerator on the corrosion of titanium-75A in a small thermal siphon loop constructed of titanium. 

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