Premium
Initial Stages of ZrB 2 –30 vol% SiC Oxidation at 1500°C
Author(s) -
Shugart Kathleen,
Jennings Wayne,
Opila Elizabeth
Publication year - 2014
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.12843
Subject(s) - borosilicate glass , x ray photoelectron spectroscopy , scanning electron microscope , materials science , spectroscopy , chemical engineering , analytical chemistry (journal) , chemistry , composite material , physics , chromatography , quantum mechanics , engineering
The initial oxidation behavior of ZrB 2 –30 vol% SiC was analyzed with the goal of understanding any relationship to the variable oxidation performance observed at longer times. A box furnace was used to oxidize samples for times as short as 10 s and up to 100 min at 1500°C in air. The samples were characterized using mass change, scanning electron microscopy, energy dispersive spectroscopy, X ‐ray diffraction, and X ‐ray photoelectron spectroscopy to explore the oxidation behavior. The presence of borosilicate glass and ZrO 2 was observed on the surface at times as early as 10 s. Bubble formation in the borosilicate glass was observed after 30 s of oxidation and is attributed to uneven distribution of the glass. The impact of surface roughness on oxidation was also explored and found to be negligible for times greater than 30 s.