| 학회 | 한국재료학회 |
| 학술대회 | 2004년 봄 (05/14 ~ 05/14, 강릉대학교) |
| 권호 | 10권 1호 |
| 발표분야 | 세라믹스 |
| 제목 | BaO2-TiO2-TiH2계를 이용한 BaTiO3제조 및 유전특성평가 |
| 초록 | 1. Introduction The studies of barium titanate (BaTiO3) and its related compounds have intensified because of their excellent electric and electromechanical properties, such that, they are extensively used in the preparation of high-permittivity capacitors, PTC resistors, transducers, and ferroelectric memories. Barium titanate powders has been synthesized by the variety of methods, including sol-gel synthesis, hydrothermal synthesis, metal organic chemical vapor deposition, sputtering, electrothermal methods, Self-propagating High-temperature Synthesis (SHS). In this work, the influences of certain organic compounds on the mechanism of combustion and phase formation of the BaO2-TiO2 system have been studied. 2. Experimental and results The combustion of reaction mixtures was carried out in a constant pressure reactor in air atmosphere. The initial mixture was preliminary stamped into the cylindrical stainless steel mould with the 2 mm thickness, 30mm diameter and 40mm in height. Barium peroxide powders with particle size less than 45㎛ (95 % purity, Aldrich Chemical Co., USA); titanium dioxide: anatase (98 % purity, Hankook Titanium Co., Korea) with the particle size 1-2㎛; TiH2, particle size less than 525mesh, were used in the experiments. The phase composition of the combustion products was determined by X-ray diffractometer (XRD; Siemens 5000). The morphology of initial mixture and products were observed using Scanning Electron Microscope (SEM; JSM 5410) equipped with Energy Dispersive X-ray Spectroscopy (EDS; Oxford ISIS 300). |
| 저자 | 박영철, 원창환, H.H. Nersisyan |
| 소속 | 충남대 |
| 키워드 | BaTiO3; sintering; dielectric characteristic |
