Corrosion at the Polymer-Metal Interface in Artificial Seawater Solutions

Polymer components for liquid sealing applications are employed in a variety of potentially corrosive environments, such as seawater. Frequently, corrosion of the metal is found at or adjacent to the rubber-metal interface rather than at a noncontact area. The corrosion of different metal alloys (titanium, bronze, nickel, aluminum, 316 stainless steel, and 4130 steel) in combination with rubber O-rings (Buna-N and EPDM) of varying internal diameters and cross-sectional shapes in seawater over a period of four years is described herein. The corrosion of some metals (i.e., 4130 stainless steel) was found to be accelerated through interaction with Buna-N rubber O-rings. Theories to account for corrosion at the polymer-metal interface, especially with respect to polymer composition and O-ring size and shape, are discussed.

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Preparation of cross-sectional samples for near-surface TEM studies

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010012669x ◽

1987 ◽

Vol 45 ◽

pp. 380-381

Author(s):

R.C. Dickenson ◽

K.R. Lawless

Keyword(s):

Standard Sample ◽

Surface Region ◽

Specimen Preparation ◽

Thick Sheet ◽

Drill Bit ◽

Sample Holder ◽

Metal Interface ◽

Cross Sectional ◽

Near Surface ◽

Cold Worked

In thermal oxidation studies, the structure of the oxide-metal interface and the near-surface region is of great importance. A technique has been developed for constructing cross-sectional samples of oxidized aluminum alloys, which reveal these regions. The specimen preparation procedure is as follows: An ultra-sonic drill is used to cut a 3mm diameter disc from a 1.0mm thick sheet of the material. The disc is mounted on a brass block with low-melting wax, and a 1.0mm hole is drilled in the disc using a #60 drill bit. The drill is positioned so that the edge of the hole is tangent to the center of the disc (Fig. 1) . The disc is removed from the mount and cleaned with acetone to remove any traces of wax. To remove the cold-worked layer from the surface of the hole, the disc is placed in a standard sample holder for a Tenupol electropolisher so that the hole is in the center of the area to be polished.

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ALLEGHENY STAINLESS TYPE 434

Alloy Digest ◽

10.31399/asm.ad.ss0292 ◽

1974 ◽

Vol 23 (2) ◽

Keyword(s):

Fracture Toughness ◽

Stainless Steel ◽

Corrosion Resistance ◽

Heat Treating ◽

Low Carbon ◽

Good Corrosion Resistance ◽

Temperature Performance ◽

Continuous Service ◽

Oxidation Resistant ◽

Corrosive Environments

Abstract ALLEGHENY STAINLESS TYPE 434 is a low-carbon ferritic stainless steel with good corrosion resistance to mildly corrosive environments and the atmosphere. It is oxidation resistant at temperatures up to 1600 F for intermittent service and up to 1450-1500 F for continuous service. It is used for automotive trim and other exterior environments. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness and fatigue. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-292. Producer or source: Allegheny Ludlum Corporation.

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OUTOKUMPU MODA 410L/4003

Alloy Digest ◽

10.31399/asm.ad.ss1330 ◽

2020 ◽

Vol 69 (12) ◽

Keyword(s):

Stainless Steel ◽

Corrosion Resistance ◽

Physical Properties ◽

Tensile Properties ◽

Ferritic Stainless Steel ◽

Low Cost ◽

Heat Treating ◽

Low Carbon ◽

Alloy Steels ◽

Corrosive Environments

Abstract Outokumpu Moda 410L/4003 is a weldable, extra low carbon, Cr-Ni, ferritic stainless steel that is best suited for mildly corrosive environments such as indoors, where the material is either not exposed to contact with water or gets regularly wiped dry, or outdoors, where some discoloration and superficial rusting are acceptable. It is a low-cost alternative to low-carbon non-alloy steels in certain applications. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-1330. Producer or source: Outokumpu Oyj.

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OUTOKUMPU MODA 410S/4000

Alloy Digest ◽

10.31399/asm.ad.ss1329 ◽

2020 ◽

Vol 69 (11) ◽

Keyword(s):

Stainless Steel ◽

Corrosion Resistance ◽

High Temperature ◽

Physical Properties ◽

Tensile Properties ◽

Heat Treating ◽

Low Carbon ◽

Good Resistance ◽

Temperature Performance ◽

Corrosive Environments

Abstract Outokumpu Moda 410S/4000 is a 13% Cr, ferritic stainless steel that is used in applications requiring good resistance to mildly corrosive environments. It is a low carbon, non-hardening modification of Type 410 stainless steel. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on low and high temperature performance, corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-1329. Producer or source: Outokumpu Oyj.

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Strength of 316L Stainless Steel Single-Lap Joints Brazed with Ni-Based Metallic Glass Foils for Corrosive Environments

Metallurgical and Materials Transactions A ◽

10.1007/s11661-021-06299-1 ◽

2021 ◽

Author(s):

David J. Kemmenoe ◽

Eric A. Theisen ◽

Shefford P. Baker

Keyword(s):

Stainless Steel ◽

Metallic Glass ◽

316L Stainless Steel ◽

Lap Joints ◽

Single Lap Joints ◽

Corrosive Environments

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Identification of the Location of Conductive Filaments Formed in Pt/NiO/Pt Resistive Switching Cells and Investigation on Their Properties

MRS Proceedings ◽

10.1557/opl.2012.1025 ◽

2012 ◽

Vol 1430 ◽

Author(s):

Tatsuya Iwata ◽

Yusuke Nishi ◽

Tsunenobu Kimoto

Keyword(s):

Resistive Switching ◽

Chemical Properties ◽

Cell Resistance ◽

Forming Process ◽

Tem Analysis ◽

Cross Sectional ◽

Size And Shape

ABSTRACTExact locations of conductive filaments formed in NiO-based resistive switching (RS) cells were detected by C-AFM, and their electrical as well as chemical properties were investigated. After a forming process, a part of top electrodes of Pt/NiO/Pt RS cells is deformed. NiO layers are also deformed, and conductive spots, i.e. filaments have been found preferentially along the edges of deformations. Detailed C-AFM investigation has revealed that variation of cell resistances originates from differences in size and shape of filaments, not their resistivity. Furthermore, cross-sectional TEM analysis has demonstrated that filaments determining cell resistance consist of reduced NiO with an inclusion of Pt.

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Tensile Properties of Low Nickel Austenitic Stainless Steel at Elevated Temperatures

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.159.346 ◽

2012 ◽

Vol 159 ◽

pp. 346-350

Author(s):

Shu Min Liu ◽

Jian Bin Zhang

Keyword(s):

Tensile Strength ◽

Stainless Steel ◽

Elevated Temperatures ◽

Peak Stress ◽

Temperature Curve ◽

Delta Ferrite ◽

Cross Sectional ◽

Different Temperatures ◽

Increasing Temperature ◽

Reduction Percentage

The elevated temperature short-time tensile test with the sample of casting low nickel stainless steel was conducted on SHIMADZU AG-10 at ten temperatures 300, 500, 600, 700, 800, 950, 1000, 1050, 1100, and 1250°C, respectively. The stress-strain curves with the thermal deformation at the different temperatures, the peak stress intensity-temperature curve, and the reduction percentage of cross sectional area-temperature curve were obtained. Metallographic test samples were prepared and the morphology of deforming zone was observed by optical microscopy. The experimental results show that the tensile strength of the test samples decreases with increasing temperature. From 300 to 800°C, the work harding occurred and the tensile strength increases with increasing strain. The work softening occurred and the tensile strength decreases with increasing strain at temperatures of 800 to 1250°C. The minimum value of reduction percentage was measured at 800 °C. The austenite and delta-ferrite are the main phase in the tested samples. When the tensile temperatures are increased to 1200°C, the delta-ferrite became thinner and broke down to be spheroidized.

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