PMID: 11918406Mar 29, 2002Paper

Structure of [110] tilt grain boundaries in zirconia bicrystals

Journal of Electron Microscopy
N ShibataT Sakuma

Abstract

Cubic stabilized zirconia bicrystals with [110] symmetric tilt grain boundaries were fabricated by diffusion bonding of two single crystals with the composition of ZrO2-9.6mol%Y2O3. The structures of symmetric tilt small angle grain boundary and two types of symmetric tilt sigma3 grain boundaries with different grain boundary planes were observed by transmission electron microscopy (TEM). High-resolution transmission electron microscopy (HREM) observations clarified that the [110] small angle tilt grain boundary consists of periodic array of b = a/2[110] type edge dislocations. This result is consistent with Frank's dislocation model for small angle grain boundary. HREM observation also revealed that the 70.5 degrees sigma3 grain boundary shows atomically coherent grain boundary structure with the boundary plane of [111], while the 109.5 degrees sigma3 grain boundary accompanies grain boundary facets taking [111]/[115] asymmetric grain boundary plane. Because of the very low surface energy of [111] plane and/or high lattice matching of [111] and [115] type planes, the grain boundary faceting may be preferred in spite of increasing grain boundary area to about 6%. TEM-energy-dispersive X-ray spectroscopy (EDS) analyses were perf...Continue Reading

Citations

Jun 15, 2010·Journal of Electron Microscopy·Yuki NoharaYuichi Ikuhara

❮ Previous
Next ❯

Related Feeds

Antifungals (ASM)

An antifungal, also known as an antimycotic medication, is a pharmaceutical fungicide or fungistatic used to treat and prevent mycosis such as athlete's foot, ringworm, candidiasis, cryptococcal meningitis, and others. Discover the latest research on antifungals here.

Antifungals

An antifungal, also known as an antimycotic medication, is a pharmaceutical fungicide or fungistatic used to treat and prevent mycosis such as athlete's foot, ringworm, candidiasis, cryptococcal meningitis, and others. Discover the latest research on antifungals here.