ISSN:
1551-2916
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Composites of BaFe12O19 particles dispersed throughout a 3-mol%-yttria-doped zirconia (3Y-TZP) matrix have been prepared using the pressureless reactive sintering of 3Y-TZP, BaCO3, and γ-Fe2O3 powders. The reaction behavior of the mixed powder was studied with an in situ, high-temperature powder X-ray diffraction technique. The composite that was sintered at 1300°C consisted of submicrometer-sized 3Y-TZP grains and BaFe12O19 particles; the size of the 3Y-TZP grains was ∼100-300 nm, and the size of the BaFe12O19 particles was ∼200-500 nm. Based on the grain size, most of the BaFe12O19 grains presumably had a single-magnetic-domain structure. The 3Y-TZP/20-wt%-BaFe12O19 composite showed high magnetization and coercivity values, despite the low concentration of ferromagnetic phase. Preliminary mechanical tests revealed that the composite possessed moderately good mechanical properties.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1151-2916.1999.tb02121.x
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