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ceramic powder compacts

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Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005612
EISBN: 978-1-62708-174-0
... on this process in which ceramic powder compacts are simultaneously sintered and bonded are also discussed. ceramic powder compacts ceramic-ceramic joints ceramic-metal joints diffusion bonding dissimilar metals liquid-phase process nonferrous alloys sinter-bond process solid-phase process steels...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003053
EISBN: 978-1-62708-200-6
...Abstract Abstract Ceramic-forming processes usually start with a powder which is then compacted into a porous shape, achieving maximum particle packing density with a high degree of uniformity. This article compares and contrasts several forming processes, including mechanical consolidation...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001105
EISBN: 978-1-62708-162-7
.... , World Directory and Handbook of Hardmetals , 2nd ed. , Engineer's Digest Publications , 1979 13. Lardner E. , Metallurgical Applications of Isostatic Hot Pressing, Chapter 10 in High Pressure Technology , Marcel Dekker , 1977 14. Vacuum Hot Press Furnaces for Powder Compaction...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006053
EISBN: 978-1-62708-175-7
... and deformation of granules and rearrangement of carbide grains until the desired green density is attained ( Ref 3 ). As with ceramic powders, compaction does not crush the carbide grains, although the binder metal in carbide powders can deform. Residual compressive stresses in the part cause the part to expand...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003054
EISBN: 978-1-62708-200-6
... ceramics SINTERING (firing) of ceramic powder compacts to complete densification is operationally quite simple. However, the mechanisms and processes that determine the final microstructure and properties may be quite complex. Understanding these processes is critical to firing a dense product...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006080
EISBN: 978-1-62708-175-7
.... 1a ). Forging is carried out on high-speed presses that are automated for mass production. Hot pressing, on the other hand, involves compression of loose powder or a powder compact fitted tightly in the die cavity, similar to repressing, resulting in very little lateral deformation, as shown in Fig...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006571
EISBN: 978-1-62708-290-7
... J.E. , and Cima M.J. , Slurry Chemistry Control to Produce Easily Redispersible Ceramic Powder Compacts , J. Am. Ceram. Soc. , Vol 83 ( No. 10 ), 2000 , p 2401 – 2408 10.1111/j.1151-2916.2000.tb01568.x 90. Grau J. , Moon J. , Uhland S. , Cima M. , and Sachs...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006074
EISBN: 978-1-62708-175-7
... Abstract This article describes the unique aspects of cold isostatic pressing (CIP) in comparison with die compaction, for powder metallurgy parts. It details the components of CIP equipment, including pressure vessels, pressure generators, and tooling material. The article reviews the part...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006089
EISBN: 978-1-62708-175-7
... occurs when small pores are filled with fragmented particles. Metal powder and soft ceramic particles achieve higher densities when pores are filled by flow processes. As shown in Fig. 1 , the density of the powder bed reaches a maximum at the core of the zone of compaction, C - C ′. The strength...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006017
EISBN: 978-1-62708-175-7
... discussed. platinum platinum powder powder metallurgy powder production POWDER METALLURGY (PM) has been called a lost art. Unlike clay and other ceramic materials, the art of molding and firing practical or decorative metallic objects was only occasionally applied during the early stages...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006117
EISBN: 978-1-62708-175-7
... for the Intermediate Stage of Sintering , J. Am. Ceram. Soc. , Vol 53 , 1970 , p 574 – 577 10.1111/j.1151-2916.1970.tb15969.x 18. Beeré W. , The Second Stage Sintering Kinetics of Powder Compacts , Acta Metall. , Vol 23 , 1975 , p 139 – 145 19. Nicholls F.A. and Mullins W.W...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006099
EISBN: 978-1-62708-175-7
... steel ( Ref 15 ). Fixed-cutter bit heads are produced by contact infiltration of a compacted powder bed of tungsten carbide and tungsten, as shown in Fig. 3 . Fixed-cutter bit shapes are produced by making the negative of the final product within a machinable graphite or cast ceramic mold...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006497
EISBN: 978-1-62708-207-5
.... It reviews emerging technologies that promise to offer exciting ways to produce aluminum parts. The article discusses the various steps involved in PM, such as powder production, compaction, sintering, repressing, and heat treatment. It provides information on aluminum production statistics and the wear...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006132
EISBN: 978-1-62708-175-7
...% applied within 1 hour after sintering. Source: Ref 53 Table 5 Compaction and sintering characteristics of 5% and 10% ceramic MMC blends in a selected alloy available for commercial use Material Nominal matrix chemistry, wt% Ceramic content, vol% Compaction pressure Green density, g...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001064
EISBN: 978-1-62708-162-7
... Developments in PM , Vol 3 , Hausner , Ed., 1965 29. Ro D.H. , “Direct Rolling of Aluminum Powder Metal Strip,” Report for contract F33615-80-C-5161, 1 Sept 1980 to March 1981 30. Lizenby J.R. , “Rapid Omnidirectional Compaction,” Kelsey-Hayes Company, Powder...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005502
EISBN: 978-1-62708-197-9
... Table 1 Complete set of material properties for die compaction of an iron-base powder Densities Pycnometer density 7.8 g/cm 3 Fractional tap density 0.45 Yield function (Shima-Oyane) α 6.2 γ 1.03 m 7.4 Flow stress of matrix materials (work hardening) a 184 MPa...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006033
EISBN: 978-1-62708-175-7
... ) models. Of these, the most successful for metal powders has been the Shima-Oyane model, although for ceramics, soils, and minerals, other relations are generally more successful. The typical initial and boundary conditions during compaction are as follows: Initial condition for the powder...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006081
EISBN: 978-1-62708-175-7
... into the atomizer creates an oxide shell on the iron powder. Oxygen content is typically in the range of 0.1 to 0.2%, depending on the alloy. Excess carbon and oxide are undesirable for compaction and are removed during an annealing process performed at a temperature between 800 and 900 °C (1470 and 1650 °F...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003052
EISBN: 978-1-62708-200-6
...Abstract Abstract This article explains how ceramic powders are made. It begins by briefly describing the raw materials used in structural clay products, whitewares, refractories, and advanced ceramics. It then examines various additives that promote uniformity at different stages...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006042
EISBN: 978-1-62708-175-7
... Pressing of Particulate Materials , Int. J. Powder Metall. , Vol 41 ( No. 5 ), 2005 , p 45 – 55 2. Squire A. , Density Relationships of Iron Powder Compacts , T. Metall. Soc. AIME , Vol 171 , 1947 , p 485 – 505 3. Mashl S.J. , An Introduction to the Hot Isostatic Pressing...