高温预析出对Al-Zn-Mg系铝合金时效硬化和应力腐蚀的影响

研究了高温固溶后降温处理工艺对中强可使预析出LC52和7039铝合金的组织、时效硬化和应力腐蚀的影响。金相观察发现,高温预析出可优先在晶界处产生,并提高随后时效状态下晶界析出相的不连续分布程度,温度降低到一定程度晶内和晶界产生大量析出。合金拉伸性能和应力腐蚀结果表明,预析出在保持强度和塑性的同时,可提高抗应力腐蚀性能。而预析出温度降低,合金强度呈下降趋势。     

在不断创新中开创新的百年——水口山有色金属集团有限公司110年创新发展历程和展望

回顾了水口山有色金属集团有限公司的发展历程，概述了取得的技术进步和主要成就．提出了企业今后的发展方向。     

JOINING MECHANISMS OF β''''-Al2O3 CERAMIC AND PYREX GLASS TO Al MATRIX COMPOSITE

The bonding of β'-Al2O3 and pyrex glass to Al matrix composites by anodic bonding process is achieved. The microstructure of the bonded interface and the joining mechanisms are analyzed with scanning electron microscope (SEM), energy dispersive X-ray fluorescence spectrometer (EDX). It is observed that the bonding region across the interface consists of the metal layer, oxide transitional layer and the ceramic layer, with the transitional layer composed of surface region and sub-surface region. The bonding process can mainly be categorized into anodic bonding process and solid state diffusing process. The pile-up of the ions and its drift in the interface area are the main reasons for anode oxidation and joining of the interface. The temperature, voltage and the drift ions in the ceramic or glass during the bonding process are the essential conditions to solid state diffusing and oxide bonding at the interface. The voltages, temperature, pressure as well as the surface state are the main factors that influence the anodic bonding.     

以创新实现云南文山斗南锰资源的有效利用

随着国民经济特别是钢铁工业的迅速发展，资源危机成为困扰资源型可持续发展的核心问题，只有坚持以创新为动力，才能实现锰矿等资源的有效利用。     

石泉水电站扩机工程机组进水口污物清理措施

石泉水电站扩机工程自投运发电以来,一直深受机组进水口污物的困扰,致使两台机组不能正常发电,造成了严重的经济损失.本文详细介绍了机组进水口污物情况、污物处理难度以及所采取的污物处理措施,通过拦污和清污的综合方案,有效解决了污物堆积问题.     

PTA压力离心机转子的改造

介绍了PTA压力离心机的主要性能参数、工作原理、分离效果的影响因素。为了增大沉渣在过渡区及脱水区滞留的时问，同时为达到在过渡区及脱水区对沉渣加入纯净水进行再冲洗的目的，对螺旋送料转子、挡液环、进料管进行了改造。改造后，沉渣在脱水区的停留时间由0．44a增至0．72s，2．5～3t／h的冲洗水对脱水区的沉渣进行冲洗效果较好。产品中的杂质质量分数较改造前减少15％，产品优等品率提高到99％。