skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Corrosion of stainless and carbon steels in molten mixtures of industrial nitrates

Abstract

Corrosion behavior of two stainless steels and carbon steel in mixtures of NaNO{sub 3} and KNO{sub 3} was evaluated to determine if impurities found in commodity grades of alkali nitrates aggravate corrosivity as applicable to an advanced solar thermal energy system. Corrosion tests were conducted for 7000 hours with Types 304 and 316 stainless steels at 570C and A36 carbon steel at 316C in seven mixtures of NaNO{sub 3} and KNO{sub 3} containing variations in impurity concentrations. Corrosion tests were also conducted in a ternary mixture of NaNO{sub 3}, KNO{sub 3}, and Ca(NO{sub 3}){sub 2}. Corrosion rates were determined by descaled weight losses while oxidation products were examined by scanning electron microscopy, electron microprobe analysis, and X-ray diffraction. The nitrate mixtures were periodically analyzed for changes in impurity concentrations and for soluble corrosion products.

Authors:
;  [1]; ;  [2]
  1. Sandia National Labs., Livermore, CA (United States)
  2. Sandia National Labs., Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Labs., Livermore, CA (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10141843
Report Number(s):
SAND-94-8211
ON: DE94009866; BR: GB0103012
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Mar 1994
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 14 SOLAR ENERGY; STAINLESS STEEL-304; CORROSION; STAINLESS STEEL-316; CARBON STEELS; POTASSIUM NITRATES; CORROSIVE EFFECTS; SODIUM NITRATES; MOLTEN SALTS; IMPURITIES; SOLAR THERMAL POWER PLANTS; CENTRAL RECEIVERS; DEMONSTRATION PLANTS; 360105; 140702; CORROSION AND EROSION; CENTRAL RECEIVER

Citation Formats

Goods, S.H., Bradshaw, R.W., Prairie, M.R., and Chavez, J.M. Corrosion of stainless and carbon steels in molten mixtures of industrial nitrates. United States: N. p., 1994. Web. doi:10.2172/10141843.
Goods, S.H., Bradshaw, R.W., Prairie, M.R., & Chavez, J.M. Corrosion of stainless and carbon steels in molten mixtures of industrial nitrates. United States. doi:10.2172/10141843.
Goods, S.H., Bradshaw, R.W., Prairie, M.R., and Chavez, J.M. Tue . "Corrosion of stainless and carbon steels in molten mixtures of industrial nitrates". United States. doi:10.2172/10141843. https://www.osti.gov/servlets/purl/10141843.
@article{osti_10141843,
title = {Corrosion of stainless and carbon steels in molten mixtures of industrial nitrates},
author = {Goods, S.H. and Bradshaw, R.W. and Prairie, M.R. and Chavez, J.M.},
abstractNote = {Corrosion behavior of two stainless steels and carbon steel in mixtures of NaNO{sub 3} and KNO{sub 3} was evaluated to determine if impurities found in commodity grades of alkali nitrates aggravate corrosivity as applicable to an advanced solar thermal energy system. Corrosion tests were conducted for 7000 hours with Types 304 and 316 stainless steels at 570C and A36 carbon steel at 316C in seven mixtures of NaNO{sub 3} and KNO{sub 3} containing variations in impurity concentrations. Corrosion tests were also conducted in a ternary mixture of NaNO{sub 3}, KNO{sub 3}, and Ca(NO{sub 3}){sub 2}. Corrosion rates were determined by descaled weight losses while oxidation products were examined by scanning electron microscopy, electron microprobe analysis, and X-ray diffraction. The nitrate mixtures were periodically analyzed for changes in impurity concentrations and for soluble corrosion products.},
doi = {10.2172/10141843},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {3}
}