Interfacial reactions between Ti and Y 2 O 3 /Ca 4 Ti 3 O 10 composites
Source abstract
Abstract
Abstract In titanium casting, the interfacial reactions between selected Y 2 O 3 /Ca 4 Ti 3 O 10 composites in contact with titanium at 1600°C for 30 minutes in an argon environment were characterized using X‐ray diffraction, scanning electron microscopy, and analytical transmission electron microscopy. Before contact with titanium, reaction phases of the Y 2 O 3 /Ca 4 Ti 3 O 10 composites formed through hot pressing at 1500°C or annealing at 1600°C. These phases were identified as Ca 4 Ti 3 O 10 , Y 2 O 3 , and minor amounts of CaO. The amount of Ca 4 Ti 3 O 10 in the composites gradually decreased as the amount of Y 2 O 3 increased. When the Y 2 O 3 /Ca 4 Ti 3 O 10 composites were in contact with titanium, a reaction layer of α‐Ti and Y 2 O 3 was formed near the interface of the composite side. Large amounts of calcium and oxygen were expelled toward the composite side from Ca 4 Ti 3 O 10 near the interface to form CaO, which precipitated in the Ca 4 Ti 3 O 10 and Y 2 O 3 phases. Furthermore, no reaction phases were detected in titanium. Ca 4 Ti 3 O 10 and Y 2 O 3 can function as diffusion barrier layers to effectively suppress the diffusion of oxygen into titanium.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Advanced materials and composites · Titanium Alloys Microstructure and Properties · Advanced ceramic materials synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Materials Science and Engineering National Chiao‐Tung University Hsinchu Taiwan
National Applied Research Laboratories Taiwan Semiconductor Research Institute Hsinchu Taiwan
Funding
Ministry of Science and Technology, Taiwan
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