https://doi.org/10.4322/2176-1523.20191602
Tecnol. Metal. Mater. Min., vol.16 n2, 141-141, 2019 NOVOS DESAFIOS E NOVOS COMPROMISSOS André Luiz Vasconcellos da Costa e Silva Editorial

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Tecnol. Metal. Mater. Min., vol.16 n2, 142-149, 2019 KINETICS AND MECHANISM OF OXIDATION OF A CONCENTRATE OF SPFALERITE Vitor de Andrade Alvarenga Oliveira, José Márcio Soares Penna, Lucas Sanches Magalhães Sphalerite oxidation; Isoconversional method; Thermogravimetric analysis.

Original Article

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Tecnol. Metal. Mater. Min., vol.16 n2, 150-156, 2019 INFLUENCE OF PERIODIC PAUSES ON FATIGUE LIFE OF AN AUTOMOBILE HORN BRACKET UNDER VARIABLE AMPLITUDE LOADING Clayton Mamedes Angelo, Wilson de Simone Carlos, Cláudio Geraldo Schön Spectrum loads; Structural integrity; Fatigue life; Automotive components; Alloy steel.

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Tecnol. Metal. Mater. Min., vol.16 n2, 157-162, 2019 PHYSICAL, CHEMICAL AND MINERALOGICAL CHARACTERIZATION OF JASPILITE FROM CARAJÁS William Thiago de Sousa da Silva, Geanso Miranda de Moura, Denilson da Silva Costa, Douglas Martins Sousa, Roberto Tetsuo Fujiyama Characterization; Jaspilite ores; Carajás.

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Tecnol. Metal. Mater. Min., vol.16 n2, 163-169, 2019 FERROALLOY DEMAND FORECASTING MODEL USING NEURAL NETWORKS Wanessa Pereira dos Reis, Jose Adilson de Castro, Luiz Antônio Ferrarez de Castro, Alexandre José Ramos Valentim, Fausto Kunioshi , Demand forecasting; Ferroalloys; Artificial neural networks.

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https://doi.org/10.4322/2176-1523.20191578
Tecnol. Metal. Mater. Min., vol.16 n2, 170-175, 2019 AUSTENITE CRYSTALLOGRAPHIC TEXTURE EVOLUTION IN MARTENSITE FORMATION DURING COLD ROLLING OF 201LN AUSTENITIC STAINLESS STEEL Camila Oliveira de Souza, Carolline Serafim da Silva, Juciane Maria Alves, Andersan dos Santos Paula, Luiz Paulo Mendonça Brandão, Saulo Brinco Diniz, Isabela Santana de Oliveira Austenitic Stainless Steel; Cold Rolling; Austenite; Crystallographic texture

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https://doi.org/10.4322/2176-1523.20191672
Tecnol. Metal. Mater. Min., vol.16 n2, 176-182, 2019 NUMERICAL AND PHYSICAL SIMULATION OF STEEL LADLE DRAINING OPERATION WITH DIFFERENT WELL BLOCK DESIGN Paulo Vinícius Souza da Conceição, Carlos Antônio da Silva, Itavahn Alves da Silva, João Victor Gomes Guimarães Ananias, Alexandre Dolabella Resende Drain sink; Well block; Metallic yield; Gas injection.

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https://doi.org/10.4322/2176-1523.20191449
Tecnol. Metal. Mater. Min., vol.16 n2, 183-188, 2019 INFLUENCE OF CLEARANCE ANGLE AND CUT FLUID IN THE ABNT 1045 USINABILITY USING BRANDSMA METHOD André Alves de Resende, Leandro de Lima Ramaldes, Ana Luíza Ferreira Mamede, Ricardo Ribeiro Moura, Marco Paulo Guimarães Machinability; Brandsma; Clearance angle; Cutting fluid.

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Tecnol. Metal. Mater. Min., vol.16 n2, 189-195, 2019 ON-BOARD TELEMETRY APPLIED TO MINING OFF-ROAD TRUCKS FOR FUEL SUPPLY MANAGEMENT Walter Schmidt Felsch Junior Pablo Rodrigo Vieira da Cunha Valdeis de Souza Oliveira Eder Flavio Araújo Costa Supply; Telemetry; Mining; Transport equipment.

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Tecnol. Metal. Mater. Min., vol.16 n2, 196-202, 2019 KAOLIN REFLECTANCE SPECTROSCOPY: USING PLS-R TO PREDICT CONTAMINANT CONTENT Paulo Ricardo Nunes da Conceição, Carlos Otávio Petter, Carlos Hoffmann Sampaio, Aaron Young Kaolin clays; Reflectance spectra; Brightness; Partial Least Squares.

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https://doi.org/10.4322/2176-1523.20191722
Tecnol. Metal. Mater. Min., vol.16 n2, 203-211, 2019 PRINTED CIRCUIT BOARDS: CHARACTERIZATION AND ADDED VALUE. Marcos Paulo Kohler Caldas, Bárbara Mazzini Loureiro, Flávia Paulucci Cianga Silvas, Viviane Tavares de Moraes, Jorge Alberto Soares Tenório, Denise Crocce Romano Espinosa PCBs; Recycling; Characterization; Economic value.

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https://doi.org/10.4322/2176-1523.20191741
Tecnol. Metal. Mater. Min., vol.16 n2, 212-221, 2019 CHEMICAL AND PHISICAL CHARACTERIZATION OF MEMORY BOARDS FROM OBSOLETE COMPUTERS THROUGH OPTICAL EMISSION SPECTROMETRY AND SCANNING ELECTRON MICROSCOPY Marcos Paulo Kohler Caldas, Mariana Alves de Carvalho, Viviane Tavares de Moraes, Jorge Alberto Soares Tenório, Denise Crocce Romano Espinosa Recycling; Metal recovery; Characterization.

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Tecnol. Metal. Mater. Min., vol.16 n2, 222-227, 2019 STUDY OF SINTERIZED SOFT MAGNETIC MATERIALS FOR IMPLEMENTATION IN SERVOMOTORS Sergio Deitos Bittencourt, Moisés de Mattos Dias, Monir Göethel Borba, José Carlos Krause de Verney, Eduardo Luis Schneider, Lirio Schaeffer Powder metallurgy; Compression; Sintering; Servomotor.

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Tecnol. Metal. Mater. Min., vol.16 n2, 228-238, 2019 EFFECT OF ADHESIVE THICKNESS IN THE MECHANICAL BEHAVIOR OF ADHESIVE JOINTS FOR AUTOMOTIVE APPLICATIONS Diego Tolotti de Almeida João Henrique Corrêa de Souza Piero David Maehler Tiago Roberto Simon Adhesive seals; Mechanical behavior; Shear strength; Cross traction; Adhesive thickness.

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Tecnol. Metal. Mater. Min., vol.16 n2, 239-245, 2019 INFLUENCE OF IRON ORE PELLET FEED CHARACTERISTCS IN THE FILTERING STAGE Karine Fernandes Rodrigues, Otávia Martins Silva Rodrigues, Rafael de Souza Rodrigues Iron ore; Filtering; Pellet feed; Specific surface.

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https://doi.org/10.4322/2176-1523.20191770
Tecnol. Metal. Mater. Min., vol.16 n2, 246-254, 2019 CHARACTERIZATION OF FLOTATION TAILINGS FROM SAMARCO AND OTHER VARIETIES OF SAND FOR USE IN SAND MOLDING IN THE FOUNDRY INDUSTRY Ricardo Augusto Martins Figueiredo, Sávio José de Oliveira, Guilherme Francisco de Sales Silva, Cláudio Batista Vieira, Maria Aparecida Pinto, Leandro Moreira Carneiro, Varadarajan Seshadri, Denilson Rodrigues de Araújo, Gil Ribeiro Vilela Neto Flotation tailing, Sand molding, Foundry industry, Sustainability.

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Tecnol. Metal. Mater. Min., vol.16 n2, 255-262, 2019 KINETICS OF COPPER AND CADMIUM CEMENTATION BY ZINC POWDER Vitor de Andrade Alvarenga Oliveira José Márcio Soares Penna Lucas Sanches Magalhães Versiane Albis Leão Cláudio Gouvea dos Santos Cementation; Kinetics; Copper and cadmium.

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Tecnol. Metal. Mater. Min., vol.16 n2, 263-267, 2019 COMPARATIVE STUDY BETWEEN TECHINIQUES OF PRECIPITATION BY CHEMICAL REDUCTION AND CHELATING RESINS FOR COPPER RECOVERY Amilton Barbosa Botelho Junior, Iara Alves Anes, Jorge Alberto Soares Tenório Sodium dithionite; Lewatit TP 207; Ion-exchange.

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Tecnol. Metal. Mater. Min., vol.16 n2, 268-278, 2019 THE EFFECT OF KEY ASPECTS ON THE THERMOMECHANICAL BEHAVIOUR OF TORPEDO LADLE BRICKS USING FINITE ELEMENT ANALYSIS Ana Paula de Miranda Mati, Rubens Alves Freire, Sergio Luiz Cabral da Silva, Paulo Roberto Brandão FEM; Thermomechanical behavior; Torpedo ladle.

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Tecnol. Metal. Mater. Min., vol.16 n2, 279-283, 2019 COMPARATIVE STUDY BY TEM, EBSD AND MICROHARDNESS OF THE MICROSTRUCTURE OF COPPER WIREDRAWN AT 77 K AND 295 K Marcos Paulo Pereira Leis, Sheyla Santana de Carvalho, Talita Gama Sousa, Simone Izabel Vieira de Santana, Luiz Paulo Branda High strength; High conductivity; EBSD; TEM.

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Tecnol. Metal. Mater. Min., vol.16 n2, 284-289, 2019 ELECTRICAL AND STRUCTURAL CHARACTERIZATION OF LEAD AND COPPER CERAMICS Vander Alkmin dos Santos Ribeiro, Adhimar Flávio Oliveira, Rero Marques Rubinger, Claudiney de Sales Pereira Mendonça, Valesca Donizete de Oliveira, Manoel Ribeiro da Silva, Spinel structure; Barrier at crystallite boundaries; Pb-Cu ceramics.

Original Article