Skip to main content
SpringerLink
Log in

Corrosion of carbon steel and 18% Cr-8% Ni stainless steels in 23% by weight fluorosilicic acid and 10-30-0 suspension fertilizer with fluorosilicic acid added

  • Published:
Fertilizer research Aims and scope Submit manuscript

Abstract

Research studies conducted by the Tennessee Valley Authority (TVA) have shown that addition of fluorosilicic acid can improve the physical properties of suspension fertilizers made from monoammonium phosphate (MAP) containing metallic impurities. The experimental data showed that addition of as little as 0.6% fluorine as fluorosilicic acid to a 10-30-0 grade suspension improved its viscosity, pourability, and high-temperature storage and increased the water solubility of the nitrogen and P2O5. Because fluorosilicic acid is very corrosive in nature, a series of electrochemical and immersion corrosion tests was conducted to study the effect of fluorosilicic acid on the corrosiveness of 10-30-0 suspension containing fluorosilicic acid. The corrosion tests included exposure of mild steel and several popular austenitic stainless steels under static conditions at both ambient temperature and 130°F. Tests were also made with the corrosion test specimens exposed in fluorosilicic acid (23% by wt). This paper includes results of these corrosion tests.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Metals-Physical, Mechanical, Corrosion Testing. American Society for Testing and Materials (ASTM), Annual Book of ASTM Standards, Part 10, Philadelphia, Pennsylvania, 1982

  2. National Association of Corrosion Engineers (NACE). Laboratory Corrosion Testing of Metals for The Process Industries. NACE Standard TM-01-69, NACE Standards, Houston, Texas, 1976 Revision

    Google Scholar 

  3. Electrochemical Techniques For Corrosion Engineering. National Association of Corrosion Engineers, Houston, Texas, 1986

Download references

Author information

Authors and Affiliations

  1. Chemical Development Department, Tennessee Valley Authority, National Fertilizer & Environmental Research Center, 35660-1010, Muscle Shoals, AL, USA

    D. E. Nichols, D. T. Nguyen, J. R. Burnell & E. F. Dillard

Authors
  1. D. E. Nichols
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. D. T. Nguyen
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. J. R. Burnell
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. E. F. Dillard
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Mention of companies and trade names for processes, equipment, and commercial products does not constitute an endorsement by TVA or the U.S. Government.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Nichols, D.E., Nguyen, D.T., Burnell, J.R. et al. Corrosion of carbon steel and 18% Cr-8% Ni stainless steels in 23% by weight fluorosilicic acid and 10-30-0 suspension fertilizer with fluorosilicic acid added. Fertilizer Research 29, 335–346 (1991). https://doi.org/10.1007/BF01052403

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01052403

Keywords

Search

Navigation