Iron Powder Metallurgy

Hausner, Henry Hermann; Roll, Kempton H.; Johnson, Peter K.

doi:10.1007/978-1-4899-6467-0

Cited by 4 publications

(4 citation statements)

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“…Atomization, electrolytic deposition, carbonyl and reduction processes are widely known at commercial scale and are the major routes of manufacturing iron powders. 66) Figure 3 shows schematic illustration of various steps involved in the IP manufacturing through different process along with their corresponding morphology. Iron powder synthesis using atomization route is a physical method in which molten iron obtain by melting solid iron or scrap is subjected to atomization by means of pressurized jets of air or water where in the molten metal breaks up into tiny droplets and further solidifies to form pure, spherical/irregular iron powders.…”

Section: Synthesismentioning

confidence: 99%

Iron Powders as a Potential Material for Arsenic Removal in Aqueous Systems

et al. 2021

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Section: Synthesismentioning

confidence: 99%

Iron Powders as a Potential Material for Arsenic Removal in Aqueous Systems

et al. 2021

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“…They are well suited for mass production, and it is possible to produce objects that cannot be made with conventional techniques. Furthermore, the powder metallurgy process is generally "clean" as compared with ordinary metal casting (9).…”

Section: General Aspectsmentioning

confidence: 99%

“…The resin may be extracted with solvents before the sintering, or it is simply pyrolyzed during the sintering. The finishing treatments of the powder metallurgy products include grinding and surface treatment such as plating or coloring (9).…”

Section: General Aspectsmentioning

confidence: 99%

Toxicology and occupational hazards of new materials and processes in metal surface treatment, powder metallurgy, technical ceramics, and fiber-reinforced plastics.

Midtgard

Je²

1991

Scand J Work Environ Health

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MIDTOARD U, JELNES JE . Toxicology and occupat ional hazards of new materials and processes in metal surface treatment, powder metallurgy, technical ceramics, and fiber-reinforced plastics. Scand J Work En viron Health 1991;17:369-79. Many new materials and processes are about to find their way from the research laboratory into industry. The present paper describes some of these processes and provides an overviewof possible occupational hazards and a list of chemicals used or produced in the processes. The technological areas that are considered are metal surface treatme nt (ion implantation, physical and chemical vapor deposition, plasma spraying), powder metallurgy, advanced technical ceramics, and fiberreinforced plastics.Key terms: carbides, chemical vapor deposition, fibers, high-tech ceramics, ion implantation, nitrides, oxides, physical vapor deposition, plasma spray.Technological advancement implies that new processes and materials are constantly being developed. This development involves several industries and scientific disciplines, and the research is often carried out as part of governmental programs. For example, some of the Nordic countries have encouraged research and development in new material technologies by allocating large sums of money for this field. As a result of such programs, several new technological processes are about to find their way from the research laboratory into more general use in industry.It is the purpose of the present paper to pro vide an overview of the different kinds of materials and potential workplace hazards associated with some technologies which are more or less new . The technologies that are considered in this report are metal surface treatment, powder metallurgy, advanced technical ceramics, and fiber-reinforced plastics. These areas were chosen since they are about to have a major industrial breakthrough in the Nordic countries.As an initial step in identifying the chemicals used or produced in the various processes and their potential workplace hazards, we have consulted handbooks, information booklets, and research proposals from various technology centers. Information has also been gathered from meetings and visits to some of the research centers.In being engaged at an earl y stage, it is our hope that new hazards are foreseen so that serious occupa- New materialsVery often new processes and materials are introduced into the workplace before their impact on industrial hygiene is fully understood (I). In fact , scientists are able to create new materials and new chemicals at a much faster rate than the toxicologist can evaluate them . Consequently, many of the substances currently handled or produced in industrial processes are toxicologically unknown. This problem may be of limited concern to designers and research scientists, who are generally not subjected to serious or long-term exposure to hazardous agents. However, in large-scale industrial applications the risk of long-term exposure, and accidental overexposure, is ever present. Therefore, protection...

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“…For this purpose detailed LPA analysis is carried out using unimodal and bimodal combinations of isotropic domain size distributions and anisotropic microstrain inhomogeneities. Fe is abundantly used in the production of steels (Bhadeshia & Honeycombe, 2017), magnetic alloys (Yoshizawa et al, 1988;Yoshizawa & Yamauchi, 1990;Herzer, 1997), powder metallurgy (Roll & Johnson, 1968;Gaiduchenko & Napara-Volgina, 1996) and catalysts (Liu et al, 1996;Boddien et al, 2011;Lendzion-Bieluń et al, 2011;Wilk et al, 2017). Knowledge of their microstructural parameters plays a vital role in evaluating the processing conditions of these materials as well as their performance under operative conditions (Taylor, 1945;Rai et al, 2004;Radzikowska, 2005;Mahadevan et al, 2008;Raghavan, 2011;Rajan et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Line profile analysis of synchrotron X-ray diffraction data of iron powder with bimodal microstructural profile parameters

et al. 2021

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Room-temperature synchrotron X-ray diffraction and subsequent detailed line profile analysis of Fe powder were performed for microstructural characterization. The peak shapes of the diffraction pattern of Fe were found to be super-Lorentzian in nature and the peak widths were anisotropically broadened. These peak profile features of the diffraction pattern are related to the microstructural parameters of the material. In order to elucidate these features of the diffraction pattern, detailed line (peak) profile analyses were performed using the Rietveld method, modified Williamson–Hall plots and whole powder pattern modelling (WPPM), and related microstructural parameters were determined. Profile fitting using the Rietveld and WPPM methods with a single microstructural (unimodal) model shows systematic deviation from the experimentally observed diffraction pattern. On the basis of Rietveld analysis and microstructural modelling it is revealed that the microstructure of Fe consists of two components (bimodal profile). The microstructural parameters of crystallite/domain size distribution, dislocation density, nature of dislocations and phase fraction were evaluated for both components. The results obtained using different methods are compared, and it is shown that diffraction peak profile analysis is capable of modelling such inhomogeneous bimodal microstructures.

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Iron Powder Metallurgy

Cited by 4 publications

References 0 publications

Iron Powders as a Potential Material for Arsenic Removal in Aqueous Systems

Iron Powders as a Potential Material for Arsenic Removal in Aqueous Systems

Toxicology and occupational hazards of new materials and processes in metal surface treatment, powder metallurgy, technical ceramics, and fiber-reinforced plastics.

Line profile analysis of synchrotron X-ray diffraction data of iron powder with bimodal microstructural profile parameters

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