A5065095894- Fiber-reinforced polymer composites
- Bone Tissue Engineering Materials
- Metallurgical Processes and Thermodynamics
- Dental materials and restorations
- Smart Materials for Construction
- Vibration and Dynamic Analysis
- Microstructure and Mechanical Properties of Steels
- Hydrogen embrittlement and corrosion behaviors in metals
- Graphene and Nanomaterials Applications
- Graphene research and applications
Centro de Tecnologia Mineral
2023
Military Institute of Engineering
2021
Instituto de Biologia do Exército
2021
This study investigated the appropriate methodology required to measure single carbon fibers electrical resistivity. Two- and four-probe methods were evaluated for this measurement. Comparing results filaments of pitch-based PAN-based shows that two-probe method gives acceptable fibers, but much higher deviations from adjusted resistivity (>15%). The small (<1%) both precursors is most suitable measurements fibers. accuracy than all samples tested.
One of the causes failure dental implants is bone loss due to bacterial infiltration. To minimize this problem, biofilm adhesion on abutments must be avoided improve soft tissue sealing. The present work aimed functionalization titanium abutment surface with antimicrobials graphene oxide and copper oxide. samples were divided into 4 groups: G1 (Cu2O coating); G2 (GO G3 + Cu2O coating) G4 (no coating). They characterized by Scanning Electron Microscopy (SEM), Fourier transform infrared...
Pitch-based carbon fibers production usually involves three thermal treatments after spinning: stabilization, carbonization, and graphitization.Stabilization is the slowest most costly step in which several phenomena co-occur, such as oxidation, dehydration, condensation, diffusion.This article reports a review of main results physical-chemical processes involved mesophase pitch-based fiber stabilization control parameters' influence on fiber's final properties.
O presente artigo tem por objetivo investigar os efeitos de três variáveis do sistema reacional processo fosfatização com manganês imersão a quente empregado nos armamentos leves Exército Brasileiro. A avaliação da influência destas foi feita através realização experimentos baseados em um planejamento fatorial dois níveis para as variáveis, sendo elas o tempo, concentração reagente fosfatizante e íons ferroso no meio reacional. Os resultados mostraram que selecionadas possuem interação...