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Published: 30 April 2020
Fig. 10.26 First-stage solvent debinding of 0.9 μm carbide powder where the oil-wax portion of the binder is removed by immersion in heptane at 30 or 40 °C (85 or 105 °F). Source: Qu et al. ( Ref 13 , 14 , 15 ) More
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Published: 30 April 2020
Fig. 10.27 Temperature versus time trace for thermal debinding and sintering of a cemented carbide. The peak temperature of 1400 °C (2550 °F) is held for 1 h. The holds during heating are to enable composition control. Source: Andren ( Ref 16 ) More
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Published: 30 April 2020
Fig. 10.35 Solvent immersion debinding data for 0.8 μm alumina. Trials over several hours are reported for three temperatures, showing more rapid filler-phase removal as temperature increases. Source: Oliveira et al. ( Ref 22 ) More
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Published: 30 April 2020
Fig. 7.26 Wick debinding data using three stainless steel median particle sizes and a bed of small alumina powder. The time is expressed on a square-root basis. More
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Published: 30 April 2020
Fig. 7.28 Optimized heating rate versus temperature plot for wick debinding with constraints of the least time and minimized distortion. Source: Zhang et al. ( Ref 10 ) More
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Published: 30 April 2020
Fig. 7.36 Schematic of batch catalytic debinding, where the compacts rest on support trays in a hot nitrogen atmosphere that is doped with nitric acid More
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290201
EISBN: 978-1-62708-319-5
... Abstract This chapter provides details on powder-binder processing for three materials, namely precipitation-hardened 17-4 PH stainless steel, cemented carbides, and alumina. The types of powders, binders, feedstock, shaping processes, debinding, sintering cycles, compositions, microstructure...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.9781627083195
EISBN: 978-1-62708-319-5
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290261
EISBN: 978-1-62708-319-5
... All rights reserved www.asminternational.org APPENDIX Glossary A acicular powder. Needle-shaped particles good for debinding strength but generally detrimental to the forming process because they resist ow in molding. additive manufacturing (AM). A process of joining materials to make components from...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000039
EISBN: 978-1-62708-312-6
... irregular powders are less prone to slumping during debinding and early stages of sintering. Slightly irregular powders also provide the so-called brown strength or the compact strength subsequent to debinding, which is desirable in many situations. These and other opposing requirements suggest...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290139
EISBN: 978-1-62708-319-5
..., allowing for component damage; especially problematic are fast binder-removal cycles. This chapter covers the parameters involved in related binder-removal steps, sometimes called debinding, dewaxing, or delubrication. 7.1 Introduction Binder removal from a powder compact involves several events...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290035
EISBN: 978-1-62708-319-5
... sugars, starches, latex emulsions, and acrylics. Often, solvent evaporation and binder cross linking occur on each pass, using heat, light, or other triggers. After separating the “bound” part from the loose powder in the build box, the part then passes through debinding and sintering. For slow...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290001
EISBN: 978-1-62708-319-5
... of pressure and temperature to change the material state of a gas to behave like a liquid in case of supercritical debinding). Depending on the field, these options are called debinding, dewaxing, or delubrication ( Chapter 7 ). The shaped powder body is weak without a binder, so a high temperature...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290067
EISBN: 978-1-62708-319-5
... in powder processing. Examples are in binder removal by solvent debinding, binder solvation such as in slurry casting, and binder dispersion such as in spray drying. The latter is important to powder agglomeration for compaction. Die compaction relies on gravity to flow particles into a pressing die. Two...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000023
EISBN: 978-1-62708-312-6
... in this case is to make a powder with a high yield of fines (<20 μm) and with a particle shape that is nearly spherical so as to combine the requirements of a high fill density and of shape retention during debinding ( section 4.2 in Chapter 4, “Compacting and Shaping” ). Some typical atomization...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290193
EISBN: 978-1-62708-319-5
.... , Strength Evolution during the Thermal Debinding of PIM Components, Advances in Powder Metallurgy and Particulate Materials—1999 , Vol 2 , Metal Powder Industries Federation , Princeton, NJ , 1999 , p 6.89 – 6.101 • Gale W.F. and Totemeier T.C. , Ed., Smithells Metals Reference Book...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290251
EISBN: 978-1-62708-319-5
..., debinding, and sintering (at 1350 °C, or 2460 °F, for 120 min in hydrogen), the sintered density is 99% with a tensile strength of 560 MPa (81 ksi) and 69% elongation. The availability of such small particles offers a means to form smoother surfaces and more highly detailed microminiature devices. Suggested...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290085
EISBN: 978-1-62708-319-5
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 1998
DOI: 10.31399/asm.tb.ts5.t65900029
EISBN: 978-1-62708-358-4
... debinding times, high tooling costs, and part size limitations of usually less than 25 mm (1 in.) ( Ref 27 ). Although P/M tool steels are an outstanding metallurgical accomplishment, they constitute only about 10% of the domestic high-speed steel market, which in turn represents only a portion...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740373
EISBN: 978-1-62708-308-9