2018
DOI: 10.1590/s1517-707620180002.0456
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Análisis de la forma de onda de señales de Emisión Acústica producida en ensayos de interfaces ceramo-metálicas

Abstract: RESUMENEl estudio de las interfaces ceramo-metálicas es de particular importancia en odontología dada la demanda actual de las prótesis dentales, cada vez más parecidas a las piezas dentales naturales y de vida útil extensa. El objetivo del presente trabajo es profundizar el estudio del comportamiento de éstas interfaces para sistemas de restauración dental y así caracterizar la adherencia del cerámico (porcelana feldespática) al metal (aleaciones de base no noble, como cromo (Cr) comúmente utilizadas en odont… Show more

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(2 citation statements)
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“…In order to assess the effect of HIPIB irradiation of the substrates on the tribological behavior of the AlN coatings, scratch tests were carried out, combined with the AE signal processing. In this research method, the AE signal peaks were associated with the initiation and propagation of cracks in the coatings under indenter forces (Fn) above limited levels [32,37,51,[87][88][89][90]. The intensity of the AE signal peaks was proportional to (i) the number of formed cracks and (ii) the number of broken interatomic bonds (the fractured coating volume).…”
Section: The Scratch Test Results Of the Aln Coatings On The 321 Steel Substratesmentioning
confidence: 99%
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“…In order to assess the effect of HIPIB irradiation of the substrates on the tribological behavior of the AlN coatings, scratch tests were carried out, combined with the AE signal processing. In this research method, the AE signal peaks were associated with the initiation and propagation of cracks in the coatings under indenter forces (Fn) above limited levels [32,37,51,[87][88][89][90]. The intensity of the AE signal peaks was proportional to (i) the number of formed cracks and (ii) the number of broken interatomic bonds (the fractured coating volume).…”
Section: The Scratch Test Results Of the Aln Coatings On The 321 Steel Substratesmentioning
confidence: 99%
“…On the metal substrates, the tribological characteristics of the coatings were investigated by scratch tests combined with processing of acoustic emission (AE) signals by the 'Micro-Scratch Tester MST-S-AX-0000 setup with a diamond indenter, similar to [47,51,[87][88][89][90]. The indenter radius was 100 µm.…”
Section: Methodsmentioning
confidence: 99%