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powder-binder ratio

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Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290085
EISBN: 978-1-62708-319-5
... Abstract This chapter is a detailed account of various attributes related to mixing and testing of powder-binder feedstocks. Mixing parameters and their effects on feedstock properties is discussed. The attributes reviewed include mixture homogeneity, wetting, powder-binder ratio, feedstock...
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
... characteristics, binder formulation, mixing practice, and ratio of powder to binder. ferrite. Various compositions based on iron oxide used to fabricate common magnets, usually containing other metal oxides or ceramics, including zinc oxide. It is also the name given to the body-centered cubic form of pure iron...
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.t59290067
EISBN: 978-1-62708-319-5
... = phosphate ester (1 wt%) Solvent = toluene (90 wt%) 4 Powder = 0.4 μm alumina Binder = polyvinyl butyral + polyvinyl alcohol (4:1 ratio, 10 wt%) Solvent = methanol (90 wt%) 5 Powder = 4 μm alumina Binder = polyvinyl butyral (12 wt%) Dispersant = menhaden fish oil (4 wt%) + dibutyl...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290111
EISBN: 978-1-62708-319-5
... for shapes with undercuts, large areas, hard particles, or high length-to-diameter ratios. In the CIP process, agglomerated powder (formed by using powder-binder) is filled into soft, flexible tooling. The tooling is sealed to avoid leaks and then pressurized in a vessel filled with oil or water...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000223
EISBN: 978-1-62708-312-6
... the furnace before addi- bulk volume. The volume of the powder fill in tional unsintered compacts are placed in the the die cavity. furnace. burnoff. The removal of additives (binder or billet. A compact, green or sintered, that will be lubricant) by heating. further worked by forging, rolling, or extru- sion...
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
... consequence is that by heating a powder-binder mixture, it changes the relative ratio of powder to binder (volume percent), enabling easier flow. Fig. 3.14 Density for liquid paraffin wax and carnauba wax versus temperature Polymer mechanical properties vary with molecular weight, temperature...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290009
EISBN: 978-1-62708-319-5
... particle, the aspect ratio is 1, while a ligament-shaped particle is larger, for example, 3 to 5. Whiskers exceed 40 for aspect ratio, and flakes are on the order of 200 to 1000. Most powders used in binder-assisted processing have small aspect ratios, below 1.4. Higher aspect ratios result in anisotropic...
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...
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
... Abstract Binder removal approaches involve various combinations of heat, solvents, vacuum, and pressure. In each variant, the goal is binder removal without component damage. This chapter addresses the factors that control success, showing how process decisions depend on the powder and binder...
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
... the voids of the powder. The rheological characteristics of a powder-binder mixture are of critical importance. Successful feedstock requires a carefully balanced ratio of powder and binder for shape retention during debinding. High shear-rate mixing of binder and powder assures feedstock homogeneity...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290169
EISBN: 978-1-62708-319-5
... is the same as employed for thermal expansion; Fig. 3.17 in Chapter 3, “Binder Constituents,” in this book shows a vertical dilatometer. The powder component is situated in the furnace, where it is contacted by using a counterbalanced measuring probe. Thermal expansion of the measuring device is subtracted...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290193
EISBN: 978-1-62708-319-5
... requirements. Accordingly, mechanical hardness and strength tabulations are provided to document sintered properties. 9.1 Overview Each powder-binder mixture is designed for a specific forming process, but after sintering, the properties are essentially independent of the process. When a material...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480161
EISBN: 978-1-62708-318-8
... are produced from powders and how the different methods compare with each other and with conventional production techniques. The methods covered include powder injection molding, spray forming, additive manufacturing, blended elemental processing, and rapid solidification. fatigue limit fracture...
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
... flow is solved by compounding the fine powder with the organic binder into a coarser-grained, flowable powder. Powders containing particles exceeding 177 μm (7 mils) are sometimes used in powder forging, hot isostatic pressing, and powder extrusion. These processes typically produce fully dense...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.9781627083126
EISBN: 978-1-62708-312-6
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000185
EISBN: 978-1-62708-312-6
.... However, loose powder sintering in trays or molds, cold isostatic compaction, and binder-assisted extrusion are also used to produce large, flat sheets and seamless cylinders ( Ref 21 ). Powders are also mixed with binders and pore-forming agents to increase porosity. The advantages of stainless steel...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550511
EISBN: 978-1-62708-307-2
..., involving low-cost alumina powders. Alumina ceramics actually include a family of materials, typically having alumina contents from 85 to ≥99% Al 2 O 3 , the remainder being a grain-boundary phase. The different varieties of alumina stem from diverse application requirements. For example, 85% alumina...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000023
EISBN: 978-1-62708-312-6
... powder through the use of an organic binder, similar to powder injection molding ( Ref 25 ). The binder should decompose or volatilize without a carbon residue during the heat-up phase of the sintering process. If properly formulated, such a powder would have maximum compacting properties and could...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130395
EISBN: 978-1-62708-284-6
..., or nickel, has its drawback, because these elements tend to segregate in the product as the alloying element content increases. A recent development in this regard is the introduction of diffusion-bonded iron powder and binder-treated premixes. These processes are proprietary. For example, the Distaloy...