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oxides

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Published: 01 June 2019
Fig. 9 Stability diagrams for oxides and sulfides of iron, nickel, and chromium as a function of oxygen and sulfur partial pressures. Source: Ref 3 More
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Published: 01 June 2019
Fig. 10 Intergranular cracks and oxides adjacent to surface. (× 400). More
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Published: 01 June 2019
Fig. 4 Microstructure showing oxides and inclusions. (×150). More
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Published: 01 June 2019
Fig. 6 Globular oxides and slag at origin of failure. (×100). More
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Published: 01 June 2019
Fig. 6 Red oxides indicated by arrows are associated with deep pits on the diaphragm rim of the drive shaft shown in Fig. 4 . More
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Published: 01 December 2019
Fig. 4 ( a ) Worn surface of the die, ( b ) detail of accumulated zone of oxides and wear debris particles, and ( c ) detail of voids that caused “blowpipe holes” damage More
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Published: 01 December 2019
Fig. 10 Light micrograph (cross section) showing oxides formed inside the cracks of the die steel. (Etchant 1 ml nitric acid + 100 ml amyl alcohol) More
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Published: 30 August 2021
Fig. 5 Lap seam weld with oxides and areas of incomplete fusion, indicated by arrows, along the characteristic angled bond line More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001233
EISBN: 978-1-62708-232-7
... Abstract High-chromium steel pipes 42.25 x 3.25 mm from a blast furnace gas fired recuperator for the preheating of air were heavily oxidized and perforated in places. It was found that the blast furnace gas had a high sulfur content. Both the carburization and the formation of sulfide proved...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c0045909
EISBN: 978-1-62708-232-7
... obtained from the inclusions and from the steel matrix. The inclusion spectrum contained primarily iron and oxygen, whereas the matrix spectrum contained primarily iron. X-ray maps were made to show the distribution of iron and oxygen. These results indicated that the inclusions were iron oxide. A similar...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001239
EISBN: 978-1-62708-232-7
... 1150 deg C. This type of selective oxidation at which the easily oxidized chromium burns, while the nickel is not attacked, is caused by mildly oxidizing gases and is sometimes designated as green rot. Under these conditions, chromium-containing steels and alloys whose oxidation resistance is based...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0091726
EISBN: 978-1-62708-217-4
.... Recommendations included revising the specification to require a minimum NO content of 0.6%. Nitrogen dioxide Pressure vessels Propellant tanks Ti-6Al-4V UNS R56406 Stress-corrosion cracking Nitrogen tetroxide, a storable hypergolic oxidizer, was used in the service propulsion system (SPS...
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Published: 01 June 2019
Fig. 10 Polarized-light image (50×) of red-hued hydrated iron oxide (dark patches) which has invaded the cement and aggregate fractures and pushed the aggregate together. More
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Published: 01 June 2019
Fig. 2 Electron image showing bright metal (left), oxidation products (right) and the commencement of oxidation development on the surface of the metal. Right - X-ray image showing Cl concentration in the oxidation product and in spots where the metal is actively corroding. More
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Published: 01 June 2019
Fig. 3 Fracture surface at position A ( Fig. 1 ), illustrating compact oxide scale region within dotted line. More
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Published: 01 June 2019
Fig. 1 Oxide-filled intergranular cracks oriented normally to the hoop stress direction in the main steam line. More
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Published: 01 June 2019
Fig. 2 Metal particles set in an oxide matrix; this is the 1977 turbine deposit. More
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Published: 01 June 2019
Fig. 6 Oxide particles in the 1979 deposit. Note the layered nature of the deposit. These particles constituted the bulk of the 1979 turbine deposit. More
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Published: 01 June 2019
Fig. 7 Oxide in the 1977 deposit. The particle at center left appears to have formed by the complete oxidation of a small metal particle. No layered oxide was seen except that surrounding metallic particles. More
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Published: 01 June 2019
Fig. 1 Longitudinal section through the fracture, unetched. Oxide rich seam in the edge zone; cleft like crack with enclosed oxide. Fracture site to the left. 200 × More