Abstract
In this study, the AISI 304 steel specimens were boronized with nanoboron of the size of 10–50 nm and commercial Ekabor 3 powders (<1400 μm) at 950 °C to 1000 °C for 2 h and 4 h. Boronized steel specimens were characterized via SEM, microhardness and XRD analyses. Abrasive wear behavior of the specimens, boronized at different temperatures and treatment durations, were examined. The fixed ball micro-abrasion tests were carried out using the abrasive slurry, prepared with different SiC powder particle sizes on the boronized specimens at different rotational speeds. The specimens boronized with nanoboron powders exhibited a higher hardness and abrasive wear resistance than the samples boronized with the Ekabor 3 powders.
Kurzfassung
In der diesem Beitrag zugrunde liegenden Studie wurden Proben eines hochlegierten Stahls des Typs AISI 304 mit Nanobor der Größe 10 bis 50 nm und kommerziellen Ekabor 3 Pulver (<1400 µm) bei 950 °C bis 1000 °C zwei und vier Stunden lang boriert. Die borierten Stahlproben wurden mittels REM und XRD-Analysen sowie mit Hilfe der Mikrohärte charakterisiert. Außerdem wurde das Abrasivverschleißverhalten der Proben untersucht, die bei verschiedenen Temperaturen und über verschiedene Zeiträume boriert wurden. Die Mikroabrasionsversuche mit einem fixierten Ball wurden mit den borierten Proben bei verschiedenen Rotationsgeschwindigkeiten ausgeführt, wobei ein Abrasivschlamm mit verschiedenen SiC-Pulverpartikelgrößen vorbereitet wurde. Die mit Nanobor borierten Proben wiesen eine höhere Härte und einen höheren Abrasivverschleißwiderstand auf als die Proben, die mit den Ekabor 3 Pulver boriert wurden.
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