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silicon nitride

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Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003564
EISBN: 978-1-62708-180-1
... on ceramic balls surfaces. It discusses the propagation of fatigue cracks involved in rolling contacts. The characteristics of various types of RCF test machines are summarized. The article concludes with a discussion on the various failure modes of silicon nitride in rolling contact. These include...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003542
EISBN: 978-1-62708-180-1
... visual clue, such as an inclusion, may be on only one of the surfaces. An example of this is shown in Fig. 4 . Figure 4 shows both halves of a silicon nitride bar that was broken in bending. The tensile surfaces are touching. At this low magnification, the location of the origin is clear on both...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003565
EISBN: 978-1-62708-180-1
... Average crater area vs. number of impacts for SN220M silicon nitride counterfaces impacted with a SN220M silicon nitride ball at varying humidities. Source: Ref 32 The machined surface finish has an influence on wear during early cycles of impact, as shown in Fig. 17 ( Ref 33 ). Wear rates...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001910
EISBN: 978-1-62708-217-4
... components were not in the nitrided condition as was required. This resulted in lower wear and fatigue resistance. These components also had a silicon content nearly double of that specified. The high silicon content lowered the notch tensile strength and toughness of the components. Breech bolts...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006793
EISBN: 978-1-62708-295-2
..., fracture only happens on a small scale due to the occurrence of crack-arrest mechanisms, and consequently, wear rates are reduced. Fig. 18 Average crater area versus number of impacts for SN220M silicon nitride counterfaces impacted with a SN220M silicon nitride ball at varying humidities. Source...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003551
EISBN: 978-1-62708-180-1
...-carbide, silicon-nitride, or boron-nitride. Refractories and structural ceramics are generally thought to be inert and corrosion resistant (as compared to metallic alloys), and they are, relatively so, at room temperature, under dry atmosphere, and over long time intervals. With increasing...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001256
EISBN: 978-1-62708-218-1
... type of nitriding steel to the following nominal composition in wt.%: Carbon 0.2–0.3 Silicon 0.10–0.35 Manganese 0.4–0.65 Nickel 0.4 maximum Chromium 2.9–3.5 Molybdenum 0.4–0.7 Sulphur 0.05 maximum Phosphorus 0.05 maximum The defects which were initially...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001241
EISBN: 978-1-62708-235-8
... occurred. How decarburization changes workpiece properties and the case of hydrogen decarburization are addressed through examples. Cracking (fracturing) Decarburizing Nitriding steel Manganese-vanadium steel Silicon spring steel Intergranular fracture Hydrogen damage and embrittlement High...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001252
EISBN: 978-1-62708-235-8
... permitted the assumption that the precipitates were nitrides. This had been found in several prior cases of conchoidal fractures 1 . Analysis showed that the steel contained 0.022% Al and 0.017% N. Electron microprobe tests showed that the precipitates were not enriched by either iron, silicon...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001712
EISBN: 978-1-62708-234-1
... to account for the dimensional change observed in the failed rolls. This paper details the failure analysis and resulting research it inspired. It also provides recommendations for cast material choice in highly nitriding atmospheres. Metal powders Nitrogen absorption Reduction furnaces Rolls...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003562
EISBN: 978-1-62708-180-1
..., no detectable wear was found on the alumina, although metal transfer to its surface occurred ( Ref 55 ). A similar result was found in fretting a steel ball against alumina, silicon nitride, and zirconia in dry air ( Ref 56 ); however, silicon carbide produced equal wear on the ceramic and steel. An increase...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003555
EISBN: 978-1-62708-180-1
... Hastelloy X nickel-base superalloy 1205 2200 1 HX (17Cr-66Ni-bal Fe) 1150 2100 1 (a) Seamless tube. (b) Electric resistance welded tube Iron oxides alone are not protective above 550 °C (1020 °F) ( Ref 5 ). Chromium, aluminum, and/or silicon assist in forming scales, which...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001717
EISBN: 978-1-62708-217-4
... temperatures during thermal treatment. These large grains offered less resistance to fatigue and SCC. In addition, evidence of titanium-carbo-nitrides was detected at the grain boundaries of this material that was prohibited according to the governing specification. This phase is formed at higher thermal...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006792
EISBN: 978-1-62708-295-2
... surface hardness and compressive residual stresses. Hybrid Bearings Steel rolling elements may be replaced with ceramic (silicon nitride or zirconium oxide) rolling elements to form a combination called a hybrid bearing ( Ref 119 – 127 ). Under ideal conditions, hybrid bearings show lower RCF life...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003532
EISBN: 978-1-62708-180-1
... at the surface (arrows). Specimen etched with nital Wheels consist of abrasive particles, chiefly alumina or silicon carbide (SiC), and filler in a binder material that may be a resin, rubber, or a mixture of resin and rubber. Alumina is the preferred abrasive for ferrous alloys, and SiC is the preferred...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006765
EISBN: 978-1-62708-295-2
... with nital Abrasive wheels should be selected according to the manufacturer’s recommendations. Wheels consist of abrasive particles, chiefly alumina or silicon carbide (SiC), and filler in a binder material that may be a resin, rubber, or a mixture of resin and rubber. Alumina is the preferred...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006816
EISBN: 978-1-62708-329-4
... and material factors that cause a part to fail during heat treatment. The article discusses the problems associated with heating and furnaces, quenching media, quenching stresses, hardenability, tempering, carburizing, carbonitriding, and nitriding as well as potential stainless steel problems and problems...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006829
EISBN: 978-1-62708-295-2
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003529
EISBN: 978-1-62708-180-1
... to steel to create conditions conducive to maintaining a fine grain size, even in the heat-affected zones of welds. This effect is created because aluminum nitrides keep the grain growth to a low level, even during exposure to the relatively high temperatures encountered during welding. However, aluminum...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006759
EISBN: 978-1-62708-295-2
... requirements for carbon, manganese, phosphorus, sulfur, silicon, and when specified, copper, while HSLA A572 has requirements for carbon, manganese, phosphorus, sulfur, silicon, and depending on the type, the low-alloying elements of niobium, vanadium, and titanium in the 0.005 to 0.15 wt% range ( Ref 3 , 4...