A novel system for atmospheric corrosion experiments

Franey, J. P.

doi:10.1016/0010-938x(83)90055-0

Cited by 18 publications

(6 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Exposures were carried out in a system consisting of three modules; a gas generation module, an exposure facility, and a monitoring and data reduction module. Since the system has been described in detail by Franey (13,14), we summarize the description here for completeness. For H2S the corrosive gas mixture is generated by filling a length of Teflon tubing with the gas and allowing it to permeate through the tubing into a controlled flow of carrier gas.…”

Section: Methodsmentioning

confidence: 99%

The Atmospheric Sulfidation of Copper Single Crystals

Graedel

Franey

Kammlott

et al. 1987

J. Electrochem. Soc.

View full text Add to dashboard Cite

The oxidation of copper single crystals is known to proceed at different rates on different crystal faces. To determine whether this behavior extends to subsequent atmospheric sulfidation as well, we have exposed polycrystalline copper and (100), (110), and (111) single crystals of copper to low concentrations of hydrogen sulfide in high humidity air. For short exposures, all of the single crystals sulfidize much more slowly than does polycrystalline copper. In each case, Cu2S is the predominant sulfur species formed. As with oxide formation on copper single crystals, there is a slight tendency for the (111) face to be the most inert. For long exposures, the sulfide film on the single‐crystal samples increases to become essentially equal to that on polycrystalline copper. We envision a corrosion process initially controlled by grain boundary diffusion (and thus the degree of crystallinity of the underlying oxide), followed by a transition to a regime in which the diffusion of copper ions through Cu2S limits the growth of the corrosion film.

show abstract

Section: Methodsmentioning

confidence: 99%

The Atmospheric Sulfidation of Copper Single Crystals

Graedel

Franey

Kammlott

et al. 1987

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“…~ Recent studies have demonstrated the necessity for use of flowing mixed gas (FMG) corrosion chambers with control and concentration verification of all pollutant gases (1). Chambers with a variety of configurations and sizes, gas exchange rates, and corrosion environments have been presented (1)(2)(3)(4)(5). Interlaboratory comparison of the results obtained for corrosion of metals utilizing a wide variety of FMG-AACC suggests nonuniform conditions for corrosion studies, even for systems with verification of pollutant gas concentration.…”

Section: Accelerated Atmospheric Corrosion Chambers (Aacc)mentioning

confidence: 99%

“…For AT-cut quartz, pq 2648 kg/m 3 and vq = 3340 m/s (9), and Eq. [1] takes the form AF = -2.3 • 106 F 2 Am/A [2] where, AF, F, and Am/A are expressed in units of Hz, MHz, and g/cm 2, respectively. With present day instrumentation, frequencies can easily be measured with a precision of <1 Hz, thus allowing areal density determinations of 10 -9 g/cm 2 or less.…”

Section: Accelerated Atmospheric Corrosion Chambers (Aacc)mentioning

confidence: 99%

See 1 more Smart Citation

Rapid Determination of Corrosion Chamber Uniformity

Schubert

Neuburger

1990

J. Electrochem. Soc.

View full text Add to dashboard Cite

Intra-and interlaboratory comparison of the results obtained with flowing mixed gas accelerated atmospheric corr0~ sion chambers (FMG-AACC) suggests nonuniform conditions for corrosion studies. In this paper we present the use of strategically positioned quartz crystal microbalances (QCM) to rapidly determine, in situ, spatial uniformity in a FMG~ AACC. It is further demonstrated that localized chamber overloading, undetected by measurement of exhaust pollutant gas concentrations, can be monitored with the aid of a QCM. Corrosion film thicknesses are confirmed by Auger electron spectroscopy and sputter ion depth profiling. ) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 130.179.16.201 Downloaded on 2015-06-23 to IP

show abstract

“…A variant of this approach is that of Franey, 13 who uses a pressurized tank to supply gas to a variable length permeation tube sealed only at one end, and thus achieves wider dynamic control and extended system lifetimes. A second method of generation for low concentrations of corrosive gases is by dilution of more Experiments in which samples are exposed to particulate matter are much more difficult to perform, since controlled atmospheres of particulate matter are extremely difficult to generate.…”

mentioning

confidence: 99%