Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Corrosion of roof bolt steels in Missouri lead and iron mine waters.

Authors
Tilman-MM; Jolly-AF III; Neumeier-LA
Source
Rolla, MO: U.S. Department of the Interior, Bureau of Mines, IC 9055, 1985 Jan; :1-9
Link
NIOSHTIC No.
10004870
Abstract
As part of ongoing research to improve mine safety, the Bureau of Mines conducted research on the corrosion of friction rock stabilizer steels in five Missouri lead and iron mine waters. Electrochemical corrosion tests, including evaluation of pitting tendency, were performed on two types of high-strength, low-alloy (hsla) steels and galvanized steel in four Missouri lead mine waters and one Missouri iron mine water. The tests were conducted at in- mine water temperatures in both air-saturated and deaerated waters. Static, weight-loss corrosion tests were also conducted on hsla steel specimens in the five Missouri mine waters for a 2,900-h duration at average in-mine water temperatures and air-dissolved oxygen contents of 6 to 7 ppm. Corrosion rates determined by the weight-loss tests were roughly comparable with rates determined electrochemically in deaerated waters containing 0.3 to 0.5 Ppm dissolved oxygen content. Passivation of specimen (nongalvanized) surfaces in air-saturated waters resulted in very low electrochemically determined corrosion rates. Pitting tendency was generally higher for both hsla steels in air-saturated waters than in deaerated waters. Galvanized steel generally exhibited higher tendency to pitting in the deaerated waters than in the aerated mine waters.
Publication Date
19850101
Document Type
IH; Information Circular
Fiscal Year
1985
NTIS Accession No.
PB86-169000
NTIS Price
A02
Identifying No.
IC-9055
NIOSH Division
RORC
Source Name
Rolla, MO: U.S. Department of the Interior, Bureau of Mines, IC 9055
State
MO
TOP