Corrosion of Sintered Materials Based on Fe, Fe-Si, Fe-Mg and Fe-Si-Ag in Different Solutions

Marie Sedlarikova; Miroslav Zatloukal; Marek Bachmayer; Pavel Čudek

doi:10.1149/10501.0467ecst

Corrosion of Sintered Materials Based on Fe, Fe-Si, Fe-Mg and Fe-Si-Ag in Different Solutions

ECS Transactions ◽

10.1149/10501.0467ecst ◽

2021 ◽

Vol 105 (1) ◽

pp. 467-473

Author(s):

Marie Sedlarikova ◽

Miroslav Zatloukal ◽

Marek Bachmayer ◽

Pavel Čudek

Keyword(s):

Metallic Materials ◽

Sintered Materials

The topic of this work is the solution of the problem of biomaterials and biocompatibility of metallic materials. The following is a procedure for the production of samples and the study of corrosion processes in various environments.

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Development of Metallic Materials Using Hybrid Microwave Assisted Rapid Sintering

Materials ◽

10.1115/imece2005-82502 ◽

2005 ◽

Cited By ~ 3

Author(s):

W. L. E. Wong ◽

M. Gupta

Keyword(s):

Physical And Mechanical Properties ◽

Conventional Heating ◽

Matrix Composites ◽

Metallic Materials ◽

Established Method ◽

Microwave Assisted ◽

Conventional Sintering ◽

Rapid Sintering ◽

Free Solder ◽

Sintered Materials

Powder metallurgy is a highly established method for fabricating metals and metal matrix composites. An innovative hybrid sintering technique involving the use of microwaves and radiant heating is currently proposed. The use of microwaves to heat metallic materials is not common because it is a well known fact that bulk metals reflect microwaves and causes arching when placed inside a microwave oven. Microwave heating of materials is fundamentally different from conventional resistance heating and offer many benefits over conventional heating. In this study, aluminum, magnesium and a lead-free solder were selected as candidate materials and sintered using conventional sintering as well as a novel hybrid microwave assisted sintering. The sintered materials were hot extruded and characterized primarily in terms of physical and mechanical properties. An overall superior combination of hardness and tensile properties were realized in the case of microwave sintered samples when compared to the conventionally sintered samples.

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SEM Examination of a Used Diamond Knife

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100066310 ◽

1971 ◽

Vol 29 ◽

pp. 452-453

Author(s):

J. Temple Black

Keyword(s):

Electron Microscope ◽

High Voltage ◽

High Magnification ◽

Metallic Materials ◽

Wide Spread ◽

Thin Sections ◽

Transmission Electron ◽

Scanning Transmission ◽

Scanning Electron ◽

Diamond Knife

Since its introduction by Fernandez-Moran, the diamond knife has gained wide spread usage as a common material for cutting of thin sections of biological and metallic materials into thin films for examination in the transmission electron microscope. With the development of high voltage E.M. and scanning transmission E.M., microtomy applications will become increasingly important in the preparation of specimens. For those who can afford it, the diamond knife will thus continue to be an important tool to accomplish this effort until a cheaper but equally strong and sharp tool is found to replace the diamond, glass not withstanding.In Figs. 1 thru 3, a first attempt was made to examine the edge of a used (β=45°) diamond knife by means of the scanning electron microscope. Because diamond is conductive, first examination was tried without any coating of the diamond. However, the contamination at the edge caused severe charging during imaging. Next, a thin layer of carbon was deposited but charging was still extensive at high magnification - high voltage settings. Finally, the knife was given a light coating of gold-palladium which eliminated the charging and allowed high magnification micrographs to be made with reasonable resolution.

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Observation of secondary slip systems in tungsten bicrystals

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100112361 ◽

1984 ◽

Vol 42 ◽

pp. 478-479

Author(s):

J. R. Fekete ◽

R. Gibala

Keyword(s):

Stress Field ◽

Grain Boundaries ◽

Deformation Behavior ◽

Stress Axis ◽

Polycrystalline Materials ◽

Slip Systems ◽

Metallic Materials ◽

Twist Boundary ◽

Secondary Slip ◽

Plane Normal

The deformation behavior of metallic materials is modified by the presence of grain boundaries. When polycrystalline materials are deformed, additional stresses over and above those externally imposed on the material are induced. These stresses result from the constraint of the grain boundaries on the deformation of incompatible grains. This incompatibility can be elastic or plastic in nature. One of the mechanisms by which these stresses can be relieved is the activation of secondary slip systems. Secondary slip systems have been shown to relieve elastic and plastic compatibility stresses. The deformation of tungsten bicrystals is interesting, due to the elastic isotropy of the material, which implies that the entire compatibility stress field will exist due to plastic incompatibility. The work described here shows TEM observations of the activation of secondary slip in tungsten bicrystals with a [110] twist boundary oriented with the plane normal parallel to the stress axis.

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