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Lượt truy cập
 Lượt truy cập :  14,788,075

61.31

Kỹ thuật hóa học

Nguyễn Đức Văn; Đào Ngọc Nhiệm; Phạm Ngọc Chức; Phạm Ngọc Chức(1)

Tổng hợp dung dịch rắn Y0,15Zr0,85O2 kích thước nanomet bằng phương pháp đốt cháy gen sử dụng Polyvinyl Ancol

Synthesis of nanosized Y0.15Zr0.85O2 solid-solution by gel combustion method and using polyvinyl alcohol

Hóa học

2012

4

403-407

0866-7144

Dung dịch rắn Y0,15Zr0,85O2; Kích thước nanomet; Tổng hợp; Phương pháp đốt cháy gel; Polyvinyl Ancol

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.

TTKHCNQG, CVv14