Go to:
Logótipo
Você está em: Start > Publications > View > Effect of melting pressure and superheating on chemical composition and contamination of yttria-coated ceramic crucible induction melted titanium alloys
Map of Premises
Principal
Publication

Effect of melting pressure and superheating on chemical composition and contamination of yttria-coated ceramic crucible induction melted titanium alloys

Title
Effect of melting pressure and superheating on chemical composition and contamination of yttria-coated ceramic crucible induction melted titanium alloys
Type
Article in International Scientific Journal
Year
2011
Authors
Gomes, F
(Author)
Other
The person does not belong to the institution. The person does not belong to the institution. The person does not belong to the institution. Without AUTHENTICUS Without ORCID
Puga, H
(Author)
Other
The person does not belong to the institution. The person does not belong to the institution. The person does not belong to the institution. View Authenticus page Without ORCID
Barbosa, J
(Author)
Other
The person does not belong to the institution. The person does not belong to the institution. The person does not belong to the institution. View Authenticus page Without ORCID
Carlos Silva Ribeiro
(Author)
FEUP
View Personal Page You do not have permissions to view the institutional email. Search for Participant Publications View Authenticus page Without ORCID
Journal
Vol. 46
Pages: 4922-4936
ISSN: 0022-2461
Publisher: Springer Nature
Other information
Authenticus ID: P-002-QBV
Abstract (EN): When melting reactive alloys, chemical composition and alloy homogeneity strongly depend on processing conditions, especially if melting is performed in ceramic crucibles. In this case, the nature of crucible materials, the melting stock composition and the melting parameters (atmosphere, pressure, superheating time and temperature) are critical processing variables. In this work, a Ti-48Al alloy was induction melted in a ZrO2 center dot SiO2-based crucible with Y2O3 inner layer using different superheating temperatures (1600 and 1650 A degrees C) and times (0, 60 and 90 s) and poured into a graphite mould. The influence of different temperature/time combinations in the alloy composition, Al loss by evaporation and metal/crucible interaction was studied for different melting pressures. Al loss was found to increase significantly for melting pressures below 10(-2) mbar and increases with increasing superheating time and temperature. The experimental results concerning to Al loss are in agreement with theoretical (and experimentally validated) models available for induction skull melting of TiAl. Metal/crucible interaction directly increased with melting pressure, superheating time and temperature, leading to alloy contamination with Y and O. For the experimental set-up used in this work, optimal temperature/superheating time/pressure combinations that lead to acceptable alloy composition have been identified.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 15
Documents
We could not find any documents associated to the publication.
Related Publications

Of the same journal

Nanomaterials with high solar reflectance as an emerging path towards energy-efficient envelope systems: a review (2021)
Another Publication in an International Scientific Journal
Veloso, RC; Souza, A; Maia, J; Nuno Ramos; ventura, j.
Modified-release topical hydrogels: a ten-year review (2019)
Another Publication in an International Scientific Journal
Croisfelt, FM; Tundisi, LL; Ataide, JA; Silveira, E; Tambourgi, EB; Jozala, AF; Souto, EMB; Mazzola, PG
Use of single wall carbon nanohorns in polymeric electrolyte fuel cells (2011)
Article in International Scientific Journal
Brandão, L.; Passeira, C.; Gattia, D.M.; Mendes, A.
Thin film deposition of organic hole transporting materials: optical, thermodynamic and morphological properties of naphthyl-substituted benzidines (2018)
Article in International Scientific Journal
José C. S. Costa; Adélio Mendes; Luís M. N. B. F. Santos
The effect of nanotube surface oxidation on the electrical properties of multiwall carbon nanotube/poly(vinylidene fluoride) composites (2012)
Article in International Scientific Journal
Sónia Carabineiro; Manuel Fernando R Pereira; Nunes Pereira, J; Silva, J; Caparros, C; Sencadas, V; Lanceros Mendez, S

See all (37)

Recommend this page Top
Copyright 1996-2025 © Faculdade de Medicina Dentária da Universidade do Porto  I Terms and Conditions  I Acessibility  I Index A-Z
Page created on: 2025-07-10 at 00:54:38 | Privacy Policy | Personal Data Protection Policy | Whistleblowing | Electronic Yellow Book