CAJ | 학술논문

硅酸盐熔体是典型的近程有序,远程无序的准稳定态分数维体系,文章采用X射线小角散射(SAXS)、低波数拉曼光谱(LWRS)及高温拉曼光谱(HTRS)实时、原位分析等技术,对高温熔融法和溶胶凝胶法合成的CaO-Al2O3-SiO2和Na2O-Al2O3-SiO2系列低维非晶硅酸盐试样进行了团粒结构粒度及其类声子振动频率的定量测定,获得了低温硅酸盐凝胶、高温硅酸盐熔体及其淬火玻璃相均具有纳米级(几个纳米至几十纳米)自相似团粒结构和类声子振动模的重要结论,进而建立了测定高温熔体介观团粒结构粒度的HTRS测定法,结果表明硅酸盐熔体的团粒结构粒度在高温下均会比其窜温玻璃相的团粒尺度小,且高温熔体的网络结构基元也向桥氧数减少之基元转变.这些结论为探索自然界岩浆的地球化学特征、岩浆的结晶和演化以及低维硅酸盐材料结构性能的改进提供重要理论依据及信息.
규산염용체시전형적근정유서,원정무서적준은정태분수유체계,문장채용X사선소각산사(SAXS)、저파수랍만광보(LWRS)급고온랍만광보(HTRS)실시、원위분석등기술,대고온용융법화용효응효법합성적CaO-Al2O3-SiO2화Na2O-Al2O3-SiO2계렬저유비정규산염시양진행료단립결구립도급기류성자진동빈솔적정량측정,획득료저온규산염응효、고온규산염용체급기쉬화파리상균구유납미급(궤개납미지궤십납미)자상사단립결구화류성자진동모적중요결론,진이건립료측정고온용체개관단립결구립도적HTRS측정법,결과표명규산염용체적단립결구립도재고온하균회비기찬온파리상적단립척도소,차고온용체적망락결구기원야향교양수감소지기원전변.저사결론위탐색자연계암장적지구화학특정、암장적결정화연화이급저유규산염재료결구성능적개진제공중요이론의거급신식.
Silicate melts are special fractal dimension system that is metastable state of near-way order and far-way disorder.In this paper,the size of nanometer aggregation structure and the frequences of phonon vibration like mode in the low dimension silicate series(CaO-AUQs-SiOz and Na2O-Al2O3-SiQz series) synthesized via high temperature melting and sol gel methods were measured by means of small-angle X-ray scattering (SAXS),low wavenumber Raman spectrum(LWRS) and high temperature Raman spectrum(HTRS in situ measuring).The nanometer self-similarity aggregation structure(it's size is about a few nm to a few tens nm) and phonic phonon vibration like modes of low temperature silicate gel,high temperature silicate melts and it's quenching glasses phases were obtained.So a quantitative method by HTRS for measuring the aggregation size in the high temperature melts was established.The results showed that the aggregation size of the silicate melts is smaller at high temperature than at room temperature and the number of bridge oxygen in one Si-O tetrahedron in network structure units is decreasing at high temperature.This study work provides important theory and information for deliberating geochemistry characteristic,crystallization & evolution of natural magma and enhancing performance of low dimension silicate matelials.