功能材料
功能材料
공능재료
JOURNAL OF FUNCTIONAL MATERIALS
2014年
17期
17036-17039
,共4页
宋琼%张洪波%邵晶%朱晓薇%邹翔宇%韦钦磊%邓爽%江莉梅%王轶敏%魏艳玲%苏春辉
宋瓊%張洪波%邵晶%硃曉薇%鄒翔宇%韋欽磊%鄧爽%江莉梅%王軼敏%魏豔玲%囌春輝
송경%장홍파%소정%주효미%추상우%위흠뢰%산상%강리매%왕질민%위염령%소춘휘
玻璃陶瓷%发光%NaNbO 3%铕掺杂
玻璃陶瓷%髮光%NaNbO 3%銪摻雜
파리도자%발광%NaNbO 3%유참잡
glass ceramics%luminescence%sodium niobate%Eu3 +-doped
采用高温熔融退火法制备出 Na2 O-Nb2 O 5-SiO 2为基质的掺铕铌酸盐玻璃,并通过两步热处理制备出含有 NaNbO 3纳米晶相的透明玻璃陶瓷.采用差热分析、X 射线衍射、扫描电镜、分光光度计和荧光光谱仪对样品进行了表征.研究表明,铕掺杂铌酸盐基质玻璃具有良好的结晶性,其成核温度为715℃,成核时间为2 h,析晶温度为950℃,析晶时间为2 h；经SEM 分析,粒子直径为40~50 nm.该玻璃陶瓷在近红外光区的透过率可达80％.荧光光谱显示,Eu3＋∶Na2 O-Nb2 O 5-SiO 2玻璃陶瓷在393 nm 激发下于614 nm处存在较强发射峰,较基质玻璃有了极大的提高.
採用高溫鎔融退火法製備齣 Na2 O-Nb2 O 5-SiO 2為基質的摻銪鈮痠鹽玻璃,併通過兩步熱處理製備齣含有 NaNbO 3納米晶相的透明玻璃陶瓷.採用差熱分析、X 射線衍射、掃描電鏡、分光光度計和熒光光譜儀對樣品進行瞭錶徵.研究錶明,銪摻雜鈮痠鹽基質玻璃具有良好的結晶性,其成覈溫度為715℃,成覈時間為2 h,析晶溫度為950℃,析晶時間為2 h；經SEM 分析,粒子直徑為40~50 nm.該玻璃陶瓷在近紅外光區的透過率可達80％.熒光光譜顯示,Eu3＋∶Na2 O-Nb2 O 5-SiO 2玻璃陶瓷在393 nm 激髮下于614 nm處存在較彊髮射峰,較基質玻璃有瞭極大的提高.
채용고온용융퇴화법제비출 Na2 O-Nb2 O 5-SiO 2위기질적참유니산염파리,병통과량보열처리제비출함유 NaNbO 3납미정상적투명파리도자.채용차열분석、X 사선연사、소묘전경、분광광도계화형광광보의대양품진행료표정.연구표명,유참잡니산염기질파리구유량호적결정성,기성핵온도위715℃,성핵시간위2 h,석정온도위950℃,석정시간위2 h；경SEM 분석,입자직경위40~50 nm.해파리도자재근홍외광구적투과솔가체80％.형광광보현시,Eu3＋∶Na2 O-Nb2 O 5-SiO 2파리도자재393 nm 격발하우614 nm처존재교강발사봉,교기질파리유료겁대적제고.
The Eu3 +-doped Na2 O-Nb2 O 5-SiO 2 matrix glass were prepared by the high temperature melt annea-ling method.The transparent glass ceramics containing nanocrystalline sodium niobate were prepared by the heat treatment of two-stage.Samples were characterized by differential thermal analysis,X-ray diffraction, scanning electron microscope,spectrophotometer and fluorescence spectrophotometer.The results show that Eu3 +-doped matrix glass-ceramics containing has fine crystallinity.Nucleation temperature was 715 ℃,the nu-cleation time was 2 h,crystallization temperature was 950 ℃,crystallization time was 2 h.The particle diame-ter was 40-50 nm by SEM analysis.The transmittance of the glass ceramics can be up to 80% in the visible area. Fluorescence spectra showed that the glass-ceramics has strong emission peak at 614 nm by the excitation wave-length 393 nm.The glass-ceramics was improved greatly compared to the martix glass.
