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

Title: CORROSION BY SOLUTIONS CONTAINING HNO$sub 3$, HF, AND REDUCING AGENTS

Abstract

The corrosion of stainless steel in mixtures of nitric and hydrofluoric acids is markedly increased by the addition of eitber hydroxylamine nitrate or sulfamic acid, but not by the addition of ascorbic acid. Silver, Hastelloy C, and Monel corroded at rates less than five mils per year in a nitric acid-- hydrofluoric acid solution containing hydroxylamine nitrate, sulfamic acid, and ascorbic acid. Hastelloy B, Haynes 25, Carpenter 20, and Nionel corroded at rates up to 25 mils per year. Corrosion rates of about 25 mils per year were considered acceptable for this application. The corrosion of Type 304L or Type 309Cb stainless steel in a solution of nitric and hydrofluoric acids conthining a reducing agent was decreased to less than 20 mils per year by the addition of either aluminum or silver ions. Very small concentrations of either cupric or ferric ions lowered the corrosion rale of 309Cb stainless to less than five mils per year in the same solution. (auth)

Authors:
Publication Date:
Research Org.:
Du Pont de Nemours (E.I.) & Co. Savannah River Lab., Augusta, Ga.
OSTI Identifier:
4299711
Report Number(s):
DP-284
NSA Number:
NSA-12-016356
DOE Contract Number:  
AT(07-2)-1
Resource Type:
Technical Report
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-58
Country of Publication:
United States
Language:
English
Subject:
MINERALOGY, METALLURGY, AND CERAMICS; ACIDS; ALUMINUM; AMINES; CHROMIUM ALLOYS; COPPER; COPPER ALLOYS; CORROSION; EFFICIENCY; HYDROFLUORIC ACID; IONS; IRON; MOLYBDENUM ALLOYS; NICKEL ALLOYS; NITRIC ACID; SILVER; SOLUTIONS; STAINLESS STEELS; SULFUR COMPOUNDS; TUNGSTEN ALLOYS; VITAMINS

Citation Formats

Holzworth, M L. CORROSION BY SOLUTIONS CONTAINING HNO$sub 3$, HF, AND REDUCING AGENTS. United States: N. p., 1958. Web. doi:10.2172/4299711.
Holzworth, M L. CORROSION BY SOLUTIONS CONTAINING HNO$sub 3$, HF, AND REDUCING AGENTS. United States. doi:10.2172/4299711.
Holzworth, M L. Thu . "CORROSION BY SOLUTIONS CONTAINING HNO$sub 3$, HF, AND REDUCING AGENTS". United States. doi:10.2172/4299711. https://www.osti.gov/servlets/purl/4299711.
@article{osti_4299711,
title = {CORROSION BY SOLUTIONS CONTAINING HNO$sub 3$, HF, AND REDUCING AGENTS},
author = {Holzworth, M L},
abstractNote = {The corrosion of stainless steel in mixtures of nitric and hydrofluoric acids is markedly increased by the addition of eitber hydroxylamine nitrate or sulfamic acid, but not by the addition of ascorbic acid. Silver, Hastelloy C, and Monel corroded at rates less than five mils per year in a nitric acid-- hydrofluoric acid solution containing hydroxylamine nitrate, sulfamic acid, and ascorbic acid. Hastelloy B, Haynes 25, Carpenter 20, and Nionel corroded at rates up to 25 mils per year. Corrosion rates of about 25 mils per year were considered acceptable for this application. The corrosion of Type 304L or Type 309Cb stainless steel in a solution of nitric and hydrofluoric acids conthining a reducing agent was decreased to less than 20 mils per year by the addition of either aluminum or silver ions. Very small concentrations of either cupric or ferric ions lowered the corrosion rale of 309Cb stainless to less than five mils per year in the same solution. (auth)},
doi = {10.2172/4299711},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1958},
month = {5}
}