Published July 1996 | Version v1
Journal article Metadata-only

Nucleation of crystals in amorphous materials

Creators

  • 1. Kinki Univ., Higashi-Osaka, Osaka (Japan). Research Inst. for Science and Technology

Description

Electron microscope studies have been carried out on the nucleation process of crystals in amorphous materials with the following results: (a) The nucleus size, about φ3 nm, coincides with the critical size of crystals for amorphization in a Ni-50 at%Ti alloy. (b) The primary crystals in amorphous Al2O3-ZrO2 systems are always ZrO2 ones, and their nucleus size, about φ5 nm, is not sensitive to both annealing temperature and chemical composition. (c) Crystallization temperature takes the maximum value at the eutectic composition in Am-Al2O3-ZrO2 systems. The results are discussed in terms of embedded atom clusters. (author)

Additional details

Publishing Information

Journal Title
Materials Transactions, JIM
Journal Volume
37
Journal Issue
7
Journal Page Range
p. 1350-1355.
ISSN
0916-1821
CODEN
MTJIEY

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
28000403
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ALUMINIUM OXIDES; AMORPHOUS STATE; ATOMIC CLUSTERS; CRYSTALLIZATION; ELECTRON BEAMS; ELECTRON MICROSCOPY; MICROSTRUCTURE; NICKEL BASE ALLOYS; NUCLEATION; PHASE TRANSFORMATIONS; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 1000-4000 K; TITANIUM BASE ALLOYS; ZIRCONIUM OXIDES
Descriptors DEC
ALLOYS; ALUMINIUM COMPOUNDS; BEAMS; CHALCOGENIDES; CRYSTAL STRUCTURE; LEPTON BEAMS; MICROSCOPY; NICKEL ALLOYS; OXIDES; OXYGEN COMPOUNDS; PARTICLE BEAMS; TEMPERATURE RANGE; TITANIUM ALLOYS; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENT COMPOUNDS; ZIRCONIUM COMPOUNDS