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high-temperature sintering

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Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006110
EISBN: 978-1-62708-175-7
... Abstract High-temperature sintering of ferrous components continues to be important in the powder metallurgy (PM) industry. Improvements in both production rates and properties are possible as sintering temperatures increase above 1120 deg C. This article provides an overview of the different...
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Published: 30 September 2015
Fig. 7 Micrograph of high-temperature sintered 303L stainless steel showing fine MnS globules within the grains and along the grain boundaries. Glyceregia etch. Source: MPIF More
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Published: 30 September 2015
Fig. 11 Temperature profile of sintering cycles. Profile A shows the high-temperature cycle used in the study. Profile B shows the conventional sintering cycle used as a standard. Source: Ref 5 More
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006111
EISBN: 978-1-62708-175-7
... of iron and iron-graphite powder, iron-copper and iron-copper graphite, and alloy steels. The effects of various sinter conditions on the amount of combined carbon formed in the steel are also discussed. The article concludes with information on high-temperature sintering and sinter hardening. alloy...
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Published: 01 January 1996
-density microstructure useful for mechanical components, formed by injection molding and high-temperature sintering. 200× More
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006118
EISBN: 978-1-62708-175-7
... interparticle bonding, and (c) preventing reoxidation and nitride formation during cooling from sintering temperature. PM stainless steels got their start with “conventional” sintering, i.e. sintering in continuous mesh belt furnaces that utilize high-temperature-grade stainless steel mesh belts, stainless...
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Published: 30 September 2015
Fig. 1 Type 304 wrought stainless steel boss sinter brazed to a high-density (7.25 g/cm 3 ) high-temperature-sintered PM 409L flange. (a) 304L boss in 409L flange. (b) Braze filler paste applied to joint. (c) Braze joint. (d) Braze interface (Kalling's etch) 409L (top), 304L (bottom). Source More
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006119
EISBN: 978-1-62708-175-7
... of iron contamination from the surface difficult, because the porosity leads to entrapment of chemicals inside the part. Only the high-density (high-temperature-sintered) parts with non-interconnected surface porosity may be amenable to chemical passivation for improvement of surface corrosion resistance...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006057
EISBN: 978-1-62708-175-7
... selected. Soft magnets should be made of single-phase compositions of high purity. Second phases affect structure-sensitive magnetic properties over time from aging. At high sintering temperatures, iron dissolves carbon and nitrogen. Structure-sensitive properties can appear to be unaffected after...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006120
EISBN: 978-1-62708-175-7
... at temperatures in the vicinity of 1315 °C (2400 °F) leads to further enhancements in dynamic mechanical properties. With these very high sintering temperatures, it is also possible to reduce the sintering time period and realize economic benefits from higher furnace throughput. A high sintering temperature, when...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006135
EISBN: 978-1-62708-175-7
... of a neutral atmosphere is unrelated to temperature. Consequently, neutral atmospheres, unlike endothermic atmospheres, are suitable for high-temperature sintering of steel PM parts. Furthermore, parts with different carbon levels can be sintered in the same tray or in random tray sequence under neutral...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006124
EISBN: 978-1-62708-175-7
... by the passage of a large current through the pressed ingot at temperatures as high as 3000 °C (5430 °F) is still a common technique for sintering AKS-W rods, which are used for wire production. Technically Pure Tungsten The usual sintering atmosphere for tungsten is hydrogen with a dew point lower than 0...