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High temperature alkali corrosion in high velocity gases
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Deadmore, D. L. Sidik, S. M. Lowell, C. E. |
| Copyright Year | 1981 |
| Description | The effects of potential impurities in coal derived liquids such as Na, K, Mg, Ca and Cl on the accelerated corrosion of IN-100, U-700, IN-792 and Mar-M509 were investigated using a Mach 0.3 burner rig for times to 1000 hours in one hour cycles. These impurities were injected in combination as aqueous solutions into the combustor of the burner rig. The experimental matrix utilized was designed statistically. The extent of corrosion was determined by metal recession. The metal recession data were fitted by linear regression to a polynomial expression which allows both interpolation and extrapolation of the data. As anticipated, corrosion increased rapidly with Na and K, and a marked maximum in the temperature response was noted for many conditions. In contrast, corrosion decreased somewhat as the Ca, Mg and Cl contents increased. Extensive corrosion was observed at concentrations of Na and K as low as 0.1 PPM at long times. |
| File Size | 1438214 |
| Page Count | 38 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19810016656 |
| Archival Resource Key | ark:/13960/t3vt6g85q |
| Language | English |
| Publisher Date | 1981-05-01 |
| Access Restriction | Open |
| Subject Keyword | Metallic Materials Corrosion Resistance Temperature Dependence Alkalies Accelerated Life Tests Corrosion Chemical Effects High Temperature Coal Derived Liquids Fuel-air Ratio Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
