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雾化与喷雾

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ISSN 打印: 1044-5110

ISSN 在线: 1936-2684

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.2 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.8 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00095 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.28 SJR: 0.341 SNIP: 0.536 CiteScore™:: 1.9 H-Index: 57

Indexed in

EXPERIMENTAL INVESTIGATION EFFECTS OF PARAMETERS OF SPRAY FORMATION ON POROSITY AND HARDNESS

卷 29, 册 9, 2019, pp. 783-797
DOI: 10.1615/AtomizSpr.2020031079
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摘要

In this study, a coating layer has been formed on a cylinder with spray forming technique by using aluminum powders which are atomized by close-coupled nozzles which have been designed and produced before. Since porosity has a major effect on the mechanical properties of spray formed parts, the effect of the parameters on the porosity has been investigated in order to have higher mechanical properties. In the experimental step, a spinning cylindrical tube was located straight forward in the atomization direction. During the experiments, the atomized aluminum powder was sprayed with the help of nozzles when they were yet in the liquid form. The cylindrical tube rotates at a different speed, and the coating has been applied from three different distances, 135, 165, and 200 mm. Therefore, a coating layer was deposited on the cylinder surface. In the study, variable protrusions of 4, 6, and 8 mm at the nozzle tip at 5, 10, and 15 bar pressure were used besides varying the spray distance. Each experimental condition was repeated three times. Samples were taken from the center and side of each coated part in order to examine their porosity, bonding with powders and substrate, powder sizes, and powder shapes using optical microscopy. The effect of newly structured grains on hardness was also examined using a microhardness tester.

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