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catalyst powder processing

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Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001317
EISBN: 978-1-62708-170-2
...) Polyethylene synthesis CH 2 =CH 2 → CH 3 (CH 2 ) n CH 3 Cr 2 O 3 /SiO 2 (powder) Nitric acid synthesis 4NH 3 + 5O 2 → 4NO + 6H 2 O PtRh gauze Sulfuric acid production SO 2 + O 2 → SO 3 H 2 O H 2 SO 4 V 2 O 5 /SiO 2 (pellet) Environmental processes: catalysts on monoliths Three-way...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003035
EISBN: 978-1-62708-200-6
... supplier. Each additive provides important properties to the SMC, either during the processing and molding steps or in the finished parts. Catalyst Fillers Thickeners Release Agents Pigments Thermoplastic Polymers Flame Retardants Ultraviolet (UV) Absorbers The typical SMC...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005354
EISBN: 978-1-62708-187-0
... on the curing of inorganic or organic binders with either gaseous catalysts or liquid catalysts. This article reviews the major aspects of no-bake sand bonding in terms of coremaking, molding methods, and sand processing. It discusses the points to be noted in handling sand-resin mixtures for no-bake molds...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006009
EISBN: 978-1-62708-172-6
... be either hydroxyl polyesters cured with blocked isocyanates or carboxyl polyesters cured with di- or triepoxides for use in cans. Binder resins are blended with pigments, additives, and catalysts, followed by homogenizing in a kneader-extruder, then ground and screened to make powder coatings. Powder...
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
... air from entering the furnace Assist in the delubing (also called dewaxing or debinding ) portion of the sintering process Sweep reaction products toward the front of the furnace Reduce surface oxides on the powder particles in the part Control carbon on the surface and in the core...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003150
EISBN: 978-1-62708-199-3
... obvious, but equally pervasive, are the use of platinum-group metals as catalysts in automotive pollution-control equipment and for making the spinnerettes used in the manufacture of synthetic fibers for clothing; the use of silver for photographic processes; the use of gold, palladium, and their alloys...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006041
EISBN: 978-1-62708-172-6
... in FEVE-based powder coatings. Dibutyltin dilaurate, stannous octoate, and bismuth octoate have been used successfully. Catalyst levels depend on which isocyanate is used in the formulation. The same guidelines given for the liquid FEVE coatings also apply for the FEVE powder coatings. Benzoin...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005926
EISBN: 978-1-62708-166-5
... and controlled, furnace atmospheres provide the source of elements in some heat treating processes, surface cleansing of parts being treated in other processes, and a protective environment to guard against adverse effects of air when metals are exposed to elevated temperatures in still other processes...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005242
EISBN: 978-1-62708-187-0
... permanent patterns. Expendable pattern methods, such as lost foam casting and investment (lost wax) casting, are also capable of producing more intricate patterns and castings (see the article “Introduction: Expendable Mold Processes with Expendable Patterns” in this Volume). Fig. 1 Major...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001746
EISBN: 978-1-62708-178-8
... cleaned in acetone or freon, then air dried. Optimum homogeneity of graphite-bearing metals is found in solid specimens. Chip specimens are bored or milled from solid materials. During the process, graphite may segregate from the material as graphite powder, creating a carbon loss. When a chip sample...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003367
EISBN: 978-1-62708-195-5
... ( Ref 3 , 5 ). The selection of catalyst is important to the curing process of CE resins. Studies performed by D. Shimp et al. show that cure rates can vary depending on the type, addition level, and whether or not a reaction accelerator is used. The most common type of catalysts are chelates...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006122
EISBN: 978-1-62708-175-7
... Catalysts Electric Batteries Other The production begins with a nickel oxide feedstock received from mines in Sudbury, Canada. Powder is produced in the final stage of the process by injecting nickel carbonyl gas at a metered rate into the top of one of eight decomposer towers, each ten meters...
Book Chapter

Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001087
EISBN: 978-1-62708-162-7
... industries. Thin precious metal films are used to form the electronic circuits. Much of our clothing today is produced with the aid of precious metals that are used in spinnerettes for producing synthetic fibers. Precious metals perform as catalysts in various processes; for example, widely used agricultural...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003366
EISBN: 978-1-62708-195-5
... burned at 822 °C (1510 °F). Lower values indicate greater toxicity. Phenolic resins for composites Table 3 Phenolic resins for composites Composites manufacturing process Resin type (solvent) (a) Viscosity at 25 °C (77 °F) Catalyst Cure temperature Pa · s cP °C °F Filament...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005775
EISBN: 978-1-62708-165-8
... Hydrocarbon processing Refinery heater tubes 2 1 4 %Cr-1%Mo steel Ethylene pyrolysis furnace tubes Incoloy 802 Hydrodesulfurizer furnace tubes 2 1 4 %Cr-1%Mo steel Delayed coker furnace tubes 9%Cr-1%Mo steel Catalyst reactor screens 347 stainless steel Catalyst reactor...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006123
EISBN: 978-1-62708-175-7
... using arc-cast and electron-beam processes, consolidation of tungsten powders is based almost exclusively on powder metallurgical techniques. Tungsten carbide accounts for approximately 60% of tungsten consumption ( Ref 1 ). It is combined with cobalt as a binder to form cemented carbides, which...
Book Chapter

Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003370
EISBN: 978-1-62708-195-5
... Processing Feeding Transporting Injecting Flowing Compound Preparation Molding Methods Properties Effect of Fiber Type Effect of Fiber Length Effect of Matrix Catalyst Fillers Thickeners Release Agents Pigments Thermoplastic Polymers Flame Retardants...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006007
EISBN: 978-1-62708-172-6
..., and the two parts must be well mixed. Courtesy of J.A. Kehr Fig. 11 Custom coating application of fusion-bonded epoxy materials is achieved by using a spray process, either with or without electrostatics (flocking), or a fluidized bed by dipping the hot part into aerated powder. Polyolefins need...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006134
EISBN: 978-1-62708-175-7
... by the powder particle shape, the powder size distribution, the powder surface texture, and other powder characteristics that are dependent on the material processing method. Since the powder characteristics are among the major factors in determining the porous material properties of the finished component...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001325
EISBN: 978-1-62708-170-2
.... It describes their characteristics and limitations compared to conventional noncompliant materials. The article addresses the methods and products commonly used achieve regulatory compliance: waterborne coatings, exempt-solvent-based coatings, high-solids coatings, powder coating, and electro-deposition...