Properties, Phases and Microstructure of Microwave Sintered W-20Cu Composites from Spray Pyrolysis-continuous Reduction Processed Powders

The effects of microwave sintering on the properties, phases and microstructure of W-2OCu alloy, using composite powder fabricated by spray pyrolysis-continuous reduction technology, were investigated. Compared with the conventional hot-press sintering, microwave sintering to W-2OCu composites could be achieved with lower sintering temperature and shorter sintering time. Furthermore, microwave sintered W-Cu composites with high densification, homogenous microstructure and excellent properties were obtained. Microwave sintering could also result in finer microstructures. ：~

Properties of Si_3N_4-BN Composite Ceramics by Spark Plasma Sintering

Dense Si3N4 - BN composite ceramics were .fabricated by spark plasma sintering at 1 500, 1 600 and 1 650 ℃ under 50 MPa for 5 min using Si3N4 and BN powders as starting materials and 2 mass% Al2O3 and 6 mass% Y2O3 as sintering additives. The volume fraction of BN in Si3N4 -BN composite powders was chosen as 10% , 20% , and 30% , respectively. The results oJ XRD and SEM show that χ-Si3N4 completely turns into β-Si3N4 when the composite ceramics are sintered at 1 650℃; the addition of BN hinders the growth of Si3N4 grains, reigning the structure; Vickers hardness and fracture toughness of the composite ceramics decrease with the increase of BN content.

SINTEF拟制备商品化癌症气泡给药系统

4月12日,挪威科技工业研究院（SINTEF）主页宣布启动一个为期两年半,名为＂BubbleC AN＂的项目,该项目以SINTEF的专有技术为基础,拟制备一种含化疗药物的稳定微气泡,用于不能手术治疗的癌症及脑癌等难以用现有方法治疗的癌症。

大学进行技术开发的一种成功模式——介绍挪威科学、工业研究基金会

挪威多为山岭和荒瘠的高原,其中一半位于北极圈内,交通条件可想而知。日照较少,几乎没有什么发展种植业的条件。没有什么矿产资源,北海石油的发现也只是近二十几年的事情。本世纪20年代,挪威还是欧洲最贫穷的国家,但只经过了半个世纪多一点的时间,却发展成为欧洲数一数二的富国。据统计,1990年挪威人均GNP超过2万美元,仅次于瑞士。