文化产业的竞争要素与内涵式发展

基于对中国文化产业发展战略的理解,提出了注重内涵式发展的文化产业"3P模型"和"钻石模型"以力图推进相关知识支持体系的建设,并在两个模型基础上,提出了中国文化产业内涵式发展需要解决的五大问题.强调了文化产业的审美经济和符号消费的件质.认为文化产业具有不同于一般的"第三产业"的发展规律.     

一种快速测定CVD金刚石膜磨耗比的方法

报道了CVD金刚石膜磨耗比的一种简易快速测量方法.该方法通过测量金刚石膜被磨耗的体积来求得磨耗比.其优点是不使用微量分析天平,因而降低了对实验环境条件的要求,省去了烘干和称重两项工序,测试快速简便.通过与质量法对比,所得数据比较准确可信.     

Study on growth of coarse grains of diamond with high quality under HPHT

The growth of coarse grains of diamond was observed with graphite as carbon source and Fe₈₀Ni₂₀ alloy powder as catalyst at HPHT in a China-type SPD 6×1670T cubic high-pressure apparatus with highly exact control system. To synthesize coarse grains of diamond crystal with high quality, advanced indirect heat assembly, powder catalyst technology and catalyst with optimal granularity were used. Especially the nucleation of diamond and the growth rate were strictly controlled by the optimized synthesis craft. At last, diamond crystals (about 0.85 mm) in the perfect hex-octahedron shape were successfully synthesized at ~5.4 GPa and ~1360℃ in 60 min. The characteristic of crystal growth with powder catalyst technology under HPHT was discussed. The results and techniques might be useful for production of coarse grains of diamond.     

Mechanism of diamond-to-graphite transformation at diamond-stable conditions

The diamond-to-graphite transformation at diamond-stable conditions is studied by temperature gradient method （TGM） under high pressure and high temperature （HPHT）, although it is unreasonable from the view of thermodynamic considerations. It is found that, at diamond-stable conditions, for example, at 5.5 GPa and 1550 K, with fine diamond grits as carbon source and NiMnCo alloy as metal solvent assisted, not only large diamond crystals, but metastable regrown graphite crystals would be grown by layer growth mechanism, and the abundance of carbon source in the higher temperature region is indispensable for the presence of metastable regrown graphite crystals. From this transformation, it is concluded that, with metal solvent assisted, although the mechanism of crystal growth could be understood by the macro-mechanism of solubility difference between diamond and graphite in metal solvents, from the point of micro-mechanism, the minimum growth units for diamond or graphite crystals should be at atomic level and unrelated to the kinds of carbon source （diamond or graphite）, which could be accumulated free-selectively on the graphite with Sp2Tr or diamond crystals with sp3 bond structure.     

低粗糙度金刚石薄膜的制备及其光学性能的表征

采用热丝化学气相沉积（HFCVD）方法,在反应气压、衬底温度一定的情况下,通过改变碳源浓度以制备低粗糙度金刚石薄膜.扫描电镜（SEM）和原子力显微镜（AFM）测试结果表明,随着碳源浓度适当增加（从2％增加到3％）,金刚石薄膜表面晶粒尺寸减小到纳米量级,平均粗糙度从45 nm降低到21 nm,同时光学透过率下降.椭圆偏振光谱拟合结果显示,随着碳源浓度的增加,薄膜折射率n稍有偏离理想值.拉曼散射光谱显示随着碳源浓度的增加,薄膜中非金刚石相含量增加,一定程度上影响了薄膜的光学质量.结果表明,在表面粗糙度相差不大的情况下,薄膜的质量决定了其光学性质.     

微波CVD法合成金刚石薄膜的生长规律

用微波等离子化学气相沉积方法（ＣＶＤ片）用丙酮－氢气混合气体作为原料,在单晶硅的（１１１）面和人造单晶金刚石的（１００）面上,生长出了优质金刚石薄膜,并对薄膜的生长规律进行了研究。     

负衬底偏压增强离子轰击对金刚石核化影响的理论分析

从理论上研究了负衬底偏压增强子轰击对金刚石的影响,并用理论解释了一些实验现象。     

基于BP神经网络的金刚石锯片寿命预测

在花岗石锯切过程中影响金刚石锯片寿命的因素交错复杂,对正确设计、制造和使用工具都带来极大困难。利用神经网络方法,研究花岗石种类、特性、锯切参数等多处因素对工具寿命的交互影响规律,对花岗石锯切用金刚石圆锯片的制造、使用起了指导作用,从而提高工具的加工效率,降低加工成本,经网络训练表明：（１）以花岗石的石英、长石和斜长石的百分含量、抗拉强度、抗压强度;（２）以锯切用量的切深、进给量、锯片圆周速度为输入     

在不同衬底上用纳米引晶法选择性生长金刚石薄膜

采用光刻工艺和纳米引晶技术 ,在抛光的单晶 Si衬底上形成带有超细金刚石纳米粉的引晶图案 ,并利用引晶处与抛光 Si处金刚石成核密度的巨大差异 ,在光滑的 Si3N4 和 Mo衬底上实现金刚石薄膜的高选择性生长 .     

场致发射阴极的研究与进展

介绍了场致发射阴极的研究重点以及钨、钼场致发射阴极的结构、制备工艺和发射电流特性;阐述了金刚石的场致发射机理及类金刚石的场致发射性能及最新研究成就;最后叙述了国内研究场致发射阴极的情况。