Burner-Rig Simulation of Low-Temperature Hot Corrosion.
Abstract
Low velocity burner-rig tests were conducted at four temperatures: 1200 F (649 C), 1300 F (704 C), 1400 F (760 C), and 1550 F (844 C) in an attempt to simulate the low-temperature (circa 1300 F (704 C)) attack that is occuring on marine gas turbine hot section components. The tests were made by exposing CoCrAlY-coated Rene 80 test pins to a burner-rig environment burning marine diesel fuel containing 1 weight percent S at a 30 to 1 air-to-fuel ratio. The test environment contained 5 parts per million sea salt at 1200 F (649 C) and 10 parts per million at the other three temperatures. At 1200 F (649 C) and 1400 F (760 C) after 750 hours, there was little or no hot-corrosion attack. At 1550 F (844 C) after 750 hours, typical high-temperature, hot-corrosion attack had occurred. At 1300 F (704 C) low-temperature, hot-corrosion attack was duplicated within 450 hours. The occurrence of low-temperature attack was found to be related to the presence of CoSO4. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1977
- Accession Number
- ADA047536
Entities
People
- David W Taylor
- Louis F. Aprigliano