Tổng hợp dung dịch rắn y0,15zr0,85o2 kích thước nanomet bằng phương pháp đốt cháy gen sử dụng polyvinyl ancol

• Tác giả: Ngọc Nhiệm Đào, Đức Văn Nguyễn, Ngọc Chức Phạm
• Ngôn ngữ: vie
• Ký hiệu phân loại: 338.4766 Secondary industries and services
• Thông tin xuất bản: Hóa học, 2012
• Mô tả vật lý: 403-407
• Bộ sưu tập: Metadata
• ID: 644584

Tóm tắt

Tetragonal Y0.15Zr0.85O2 powders were prepared by gel combustion method using Polyvinyl Alcohol (PYA) as a matrix. The crystalline phase and morphological characterizations of Y0.15Zr0.85O2 were carried out by means by X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM). The results show that tetragonal nanosized Y0.15Zr0.85O2 phase was formed at temperature as low as 650°C. Further thermal treatment at 750°C for 2 hrs yields the single crystalline phase of Y0.15Zr0.85O2 with a uniform size distribution and average grain size 100 nm. The effects of pH value of the precursor solution as well as the molar ratio of metallic cations over PYA on the formation of tetragonal Y0.15Zr0.85O2 phase were also investigated.