{"title":"Medição da Composição dos “Gases” de Combustão.","authors":"Renato Vergnhanini Filho","doi":"10.34033/2526-5830-v6n19-5","DOIUrl":"https://doi.org/10.34033/2526-5830-v6n19-5","url":null,"abstract":"","PeriodicalId":286611,"journal":{"name":"REVISTA IPT TECNOLOGIA E INOVAÇÃO","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123621692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Avaliação de viabilidade técnica do reaproveitamento do mel residual do açúcar granulado via cristalização por resfriamentol.","authors":"Douglas Dias Barbosa, S. Derenzo","doi":"10.34033/2526-5830-v5n17-3","DOIUrl":"https://doi.org/10.34033/2526-5830-v5n17-3","url":null,"abstract":"","PeriodicalId":286611,"journal":{"name":"REVISTA IPT TECNOLOGIA E INOVAÇÃO","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122040547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Aplicação da norma ABNT NBR ISO 37120/2021: estudo sobre indicadores de abastecimento de água no município de Guarulhos/SP.","authors":"Danielly Arcini Souza, Omar Yazbek Bitar","doi":"10.34033/2526-5830-v6n19-1","DOIUrl":"https://doi.org/10.34033/2526-5830-v6n19-1","url":null,"abstract":"","PeriodicalId":286611,"journal":{"name":"REVISTA IPT TECNOLOGIA E INOVAÇÃO","volume":"319 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122431479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. Fredericci, Alexandre M. Jordão, Arnaldo M. Shima Junior, Fernanda C.P. Baraldin, Flavio I. Santana, Juliana I. Affonso, Laércio A. Piva, L. R. Rodrigues Junior, P. García, J. Flor
{"title":"Effect of Particle Geometry and\u0000Nb2O5 Addition in the Sintering of\u0000Partially Stabilized Zirconia with Y2O3","authors":"C. Fredericci, Alexandre M. Jordão, Arnaldo M. Shima Junior, Fernanda C.P. Baraldin, Flavio I. Santana, Juliana I. Affonso, Laércio A. Piva, L. R. Rodrigues Junior, P. García, J. Flor","doi":"10.34033/2526-5830-v4n13-4","DOIUrl":"https://doi.org/10.34033/2526-5830-v4n13-4","url":null,"abstract":"Zirconia (ZrO 2 ) has several applications in diverse industrial segments due to its excellent properties, especially regarding resistance to mechanical stress and high-temperature scenarios. However, due to phase transformations that this ceramic material exhibits at various temperatures, the appearance of cracks in the sintered compact during cooling is perceived. Studies have been performed in the way to stabilize zirconia during the sintering process by adding small quantities of other oxides, such as Y 2 O 3 , CeO, MgO and Nb 2 O 5 . Some studies show that the use of Nb 2 O 5 in the system ZrO 2 -Y 2 O 3 promotes an increase in its fracture toughness. Additionally, there are several controversies about the effect of the content and the polymorph of Nb 2 O 5 on zirconia stabilization. There are several commercial zirconia powders partially stabilized in the form of granules obtained by the spray dryer method which promotes better densification of the green and sintered compacts. This study aims at evaluating the effect of adding 0.8 % and 2.0 % (by weight) of monoclinic Nb 2 O 5 in 3Y-TZ-E (Tosoh) on the stabilization of this zirconia and the grinding effect of 3Y-TZ-E granules on the densification and on the sintered compact microstructure. Sintered compacts were characterized by X-ray diffraction, scanning electron microscopy, and Raman spectroscopy. The results indicate that the use of 2.0 % (in weight) of Nb 2 O5 implies in the destabilization of tetragonal zirconia and in the formation of Zr 6 Nb 2 O 17 . No significant difference was observed in the densification and in the grain size of the unground TZ-3Y-E with the addition of 0.8 % (in weight) of monoclinic Nb 2 O 5 .","PeriodicalId":286611,"journal":{"name":"REVISTA IPT TECNOLOGIA E INOVAÇÃO","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121736766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}