TI-13NB-13ZR SCAFFOLD PRODUCTION USING HYDROGENATED ALLOY POWDER AND SPACE-HOLDER TECHNIQUE
"2022-02-21" // app/Providers/../Base/Publico/Artigo/resources/show_includes/info_artigo.blade.php
App\Base\Administrativo\Model\Artigo {#1843 // app/Providers/../Base/Publico/Artigo/resources/show_includes/info_artigo.blade.php #connection: "mysql" +table: "artigo" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:35 [ "id" => 83328 "edicao_id" => 195 "trabalho_id" => 45 "inscrito_id" => 154 "titulo" => "TI-13NB-13ZR SCAFFOLD PRODUCTION USING HYDROGENATED ALLOY POWDER AND SPACE-HOLDER TECHNIQUE" "resumo" => "WHEN THE LOCAL BONE DEFECT REQUIRES MECHANICAL SUPPORT, POROUS METAL HAS BEEN APPLIED. ALTHOUGH THE TI-13NB-13ZR ALLOY WAS DEVELOPED TO REDUCE THE ELASTIC MODULUS, COMPARED TO OTHER METAL MATERIALS APPLIED IN THE ORTHOPEDIC AREA, IT IS STILL HIGHER THAN THE BONES. IN THE PRESENT WORK WE DECIDED TO USE THE HYDROGENATED TI-13NB-13ZR POWDER AND THE SPACE-HOLDER TECHNIQUE TO DEVELOP A CHEAPER AND SUITABLE METALLIC SCAFFOLD. FIRST, WE OBTAINED THE TI-13NB-13ZR ALLOY ROD BY ARC-MELT, SOLUBILIZATION HEAT TREATMENT AT 1000°C FOR 1 H FOLLOWED BY QUENCH AND FORGING IN A ROTARY SWAGE. THEN WE MACHINED IT TO OBTAIN CHIPS, WHICH WERE WASHED, ETCHED, DRIED, AND HYDROGENATED AT 950°C AND 0,31MPA OF HYDROGEN GAS ATMOSPHERE BY 7H, FOLLOWED BY QUENCH. THE CHIPS WERE THEN MILLED FOR 2 H IN A FRITSH PULVERISETTE MILL, USING A JAR OF TI, NB BALLS, A BALL-TO-POWDER RATIO OF 5:1 AND A 216 RPM MILL SPEED. THE POWDER WAS ANALYZED BY SEM+EDS, XRD, XRF, AND TGA, AND THE PARTICLE SIZE WAS CALCULATED BY SEM IMAGE ANALYZES. THE HYDROGENATED ALLOY POWDER WAS MIXED WITH NAPHTHALENE (PREVIOUSLY SIEVED IN THE RANGE 500μM TO 1MM), AND PVAL SOLUTION, AND PRESSED IN A TESTER MACHINE USING PRESSURE OF 200MPA, MAINTAINED FOR 2 MINUTES, WITH STEARINE LUBRIFICATED 6MM DIAMETER CYLINDRIC MATRIX AND PUNCHS. ONE SAMPLE WAS SINTERED IN VACCUM BETTER THAN 10-5 MBAR IN FOUR STEPS: HEATING USING 5°C/MIN UNTIL 115°C, SOAKING FOR 30 MINUTES; HEATING USING 5°C/MIN UNTIL 390°C, SOAKING FOR 24H; HEATING USING 10°C/MIN UNTIL 900°C, SOAKING FOR 5H; HEATING USING 10°C/MIN UNTIL 1000°C, SOAKING FOR 1H; AND THE SAMPLE WAS CALLED TI13NB13ZRH2009. ANOTHER SAMPLE WAS PREPARED CHANGING THE 3RD STEP, HEATING UNTIL 900°C FOR 4H, AND THE 4TH STEP, HEATING UNTIL 1000°C FOR 3,5H, AND CALLED TI13NB13ZRH4002. THE SAMPLES WERE FURNACE COOLED AND ANALYZED BY ARCHIMEDES TEST, HELIUM PICNOMETRY, MICROTOMOGRAPHY, MERCURY POROSIMETER, SEM+EDS, XRD, AND VICKERS HARDNESS. THE HYDROGENATED POWDER SHOWED TIH0,85-1 AND TIH1,91-2 (TI-δ) PHASES, PARTICLE SIZE D50 NEAR 2μM, AND SMALL QUANTITY OF IMPURITIES FROM HYDROGENATION PROCESS. THE SAMPLES PRESENTED EQUIAXIED α-PHASE DISTRIBUTED IN β, WITH SOME AREAS WITH HIGHER CONCENTRATION OF NB AND ZR IN THE MICROSTRUCTURE. THE TI13NB13ZRH4002 SAMPLE ALSO SHOWED NEEDLE SHAPED α€™ AND α€, AS WELL AS AREAS OF UNREACTED NB. THE SCAFFOLDS SHOWED AROUND 60% POROSITY, WITH HOMOGENEOUS MACROPORES DISTRIBUTED THROUGH THE MATERIAL, INTERCONNECTED WITH THE SURFACE AND WITH OTHER PORES INSIDE THE MATERIAL. TI13NB13ZRH2009 AND TI13NB13ZRH4002 HAD 45% AND 48% OF PORES WITH SIZE IN THE RANGE OF 100μM TO 900μM, 31% AND 17% OF PORES WITH SIZE IN THE RANGE OF 10μM TO 100μM, AND 24% AND 35% OF PORES WITH SIZE IN THE RANGE OF 1μM TO 10μM, RESPECTIVELY. ALTHOUGH MORE INVESTIGATION MUST BE CONDUCTED, THE RESULTS SHOWED THAT THE PROCESS IS PROMISING FOR THE PRODUCTION OF TI-13NB-13ZR ALLOY SCAFFOLDS." "modalidade" => "Oral form" "area_tematica" => "TISSUE ENGINEERING" "palavra_chave" => "SCAFFOLDS, SPACE-HOLDER TECHNIQUE, TITANIUM ALLOYS, BONE DEFECT, HYDRIDE POWDER METALLURGY" "idioma" => "Português" "arquivo" => "TRABALHO_EV170_MD1_SA103_ID154_22112021122805.pdf" "created_at" => "2022-02-16 10:17:52" "updated_at" => null "ativo" => 1 "autor_nome" => "PERSIO MOZART PINTO" "autor_nome_curto" => "PINTO" "autor_email" => "persiomozart@usp.br" "autor_ies" => "ESCOLA DE ENGENHARIA DE LORENA DA UNIVERSIDADE DE SãO PAULO (ELL/USP)" "autor_imagem" => "" "edicao_url" => "anais-do-latin-american-congress-of-artificial-organs-and-biomaterials" "edicao_nome" => "Anais do XI Latin American Congress of Artificial Organs and Biomaterials (COLAOB)" "edicao_evento" => "XI Latin American Congress of Artificial Organs and Biomaterials" "edicao_ano" => 2022 "edicao_pasta" => "anais/colaob/2021" "edicao_logo" => null "edicao_capa" => "61fc15636d9b1_03022022144819.jpg" "data_publicacao" => "2022-02-21" "edicao_publicada_em" => "2022-01-26 10:43:13" "publicacao_id" => 91 "publicacao_nome" => "Revista do Latin American Congresso of Artificial Organs and Biomaterials (COLAOB)" "publicacao_codigo" => "978-65-86901-54-2" "tipo_codigo_id" => 2 "tipo_codigo_nome" => "ISBN" "tipo_publicacao_id" => 1 "tipo_publicacao_nome" => "ANAIS de Evento" ] #original: array:35 [ "id" => 83328 "edicao_id" => 195 "trabalho_id" => 45 "inscrito_id" => 154 "titulo" => "TI-13NB-13ZR SCAFFOLD PRODUCTION USING HYDROGENATED ALLOY POWDER AND SPACE-HOLDER TECHNIQUE" "resumo" => "WHEN THE LOCAL BONE DEFECT REQUIRES MECHANICAL SUPPORT, POROUS METAL HAS BEEN APPLIED. ALTHOUGH THE TI-13NB-13ZR ALLOY WAS DEVELOPED TO REDUCE THE ELASTIC MODULUS, COMPARED TO OTHER METAL MATERIALS APPLIED IN THE ORTHOPEDIC AREA, IT IS STILL HIGHER THAN THE BONES. IN THE PRESENT WORK WE DECIDED TO USE THE HYDROGENATED TI-13NB-13ZR POWDER AND THE SPACE-HOLDER TECHNIQUE TO DEVELOP A CHEAPER AND SUITABLE METALLIC SCAFFOLD. FIRST, WE OBTAINED THE TI-13NB-13ZR ALLOY ROD BY ARC-MELT, SOLUBILIZATION HEAT TREATMENT AT 1000°C FOR 1 H FOLLOWED BY QUENCH AND FORGING IN A ROTARY SWAGE. THEN WE MACHINED IT TO OBTAIN CHIPS, WHICH WERE WASHED, ETCHED, DRIED, AND HYDROGENATED AT 950°C AND 0,31MPA OF HYDROGEN GAS ATMOSPHERE BY 7H, FOLLOWED BY QUENCH. THE CHIPS WERE THEN MILLED FOR 2 H IN A FRITSH PULVERISETTE MILL, USING A JAR OF TI, NB BALLS, A BALL-TO-POWDER RATIO OF 5:1 AND A 216 RPM MILL SPEED. THE POWDER WAS ANALYZED BY SEM+EDS, XRD, XRF, AND TGA, AND THE PARTICLE SIZE WAS CALCULATED BY SEM IMAGE ANALYZES. THE HYDROGENATED ALLOY POWDER WAS MIXED WITH NAPHTHALENE (PREVIOUSLY SIEVED IN THE RANGE 500μM TO 1MM), AND PVAL SOLUTION, AND PRESSED IN A TESTER MACHINE USING PRESSURE OF 200MPA, MAINTAINED FOR 2 MINUTES, WITH STEARINE LUBRIFICATED 6MM DIAMETER CYLINDRIC MATRIX AND PUNCHS. ONE SAMPLE WAS SINTERED IN VACCUM BETTER THAN 10-5 MBAR IN FOUR STEPS: HEATING USING 5°C/MIN UNTIL 115°C, SOAKING FOR 30 MINUTES; HEATING USING 5°C/MIN UNTIL 390°C, SOAKING FOR 24H; HEATING USING 10°C/MIN UNTIL 900°C, SOAKING FOR 5H; HEATING USING 10°C/MIN UNTIL 1000°C, SOAKING FOR 1H; AND THE SAMPLE WAS CALLED TI13NB13ZRH2009. ANOTHER SAMPLE WAS PREPARED CHANGING THE 3RD STEP, HEATING UNTIL 900°C FOR 4H, AND THE 4TH STEP, HEATING UNTIL 1000°C FOR 3,5H, AND CALLED TI13NB13ZRH4002. THE SAMPLES WERE FURNACE COOLED AND ANALYZED BY ARCHIMEDES TEST, HELIUM PICNOMETRY, MICROTOMOGRAPHY, MERCURY POROSIMETER, SEM+EDS, XRD, AND VICKERS HARDNESS. THE HYDROGENATED POWDER SHOWED TIH0,85-1 AND TIH1,91-2 (TI-δ) PHASES, PARTICLE SIZE D50 NEAR 2μM, AND SMALL QUANTITY OF IMPURITIES FROM HYDROGENATION PROCESS. THE SAMPLES PRESENTED EQUIAXIED α-PHASE DISTRIBUTED IN β, WITH SOME AREAS WITH HIGHER CONCENTRATION OF NB AND ZR IN THE MICROSTRUCTURE. THE TI13NB13ZRH4002 SAMPLE ALSO SHOWED NEEDLE SHAPED α€™ AND α€, AS WELL AS AREAS OF UNREACTED NB. THE SCAFFOLDS SHOWED AROUND 60% POROSITY, WITH HOMOGENEOUS MACROPORES DISTRIBUTED THROUGH THE MATERIAL, INTERCONNECTED WITH THE SURFACE AND WITH OTHER PORES INSIDE THE MATERIAL. TI13NB13ZRH2009 AND TI13NB13ZRH4002 HAD 45% AND 48% OF PORES WITH SIZE IN THE RANGE OF 100μM TO 900μM, 31% AND 17% OF PORES WITH SIZE IN THE RANGE OF 10μM TO 100μM, AND 24% AND 35% OF PORES WITH SIZE IN THE RANGE OF 1μM TO 10μM, RESPECTIVELY. ALTHOUGH MORE INVESTIGATION MUST BE CONDUCTED, THE RESULTS SHOWED THAT THE PROCESS IS PROMISING FOR THE PRODUCTION OF TI-13NB-13ZR ALLOY SCAFFOLDS." 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