Mo离子注入Al2O3陶瓷表面断裂韧性的研究

本文研究了Ｍｏ离子注入Ａｌ２Ｏ３陶瓷表面残余应力及其对断裂韧性的影响，并分析了产生影响的原因。研究表明离子注入技术是改善陶瓷材料表面敏感性的一种有效方法。     

家禽废弃物处理成套设备

从环保部门的要求和企业增加经济效益的角度，阐述了对家禽屠宰厂加工后产生废弃物（如羽毛、内脏以及病死禽等）的处理方法，即通过适当的加工，生产出粉状的蛋白饲料（肠羽粉和羽毛粉），同时提出了全套加工设备、生产工艺以及经济效益的预测。     

工业废水处理技术进展

介绍对比了几种新型的工业废水处理技术；混凝沉淀法，吸会法，生物降解法和离子交换树脂法，指出应开发新的水处理工艺，以降低水处理费用。     

盐丁苦难生活的写真——读朱裳的《捞盐诗》

盐丁苦难生活的写真──读朱裳的《捞盐诗》柴继光运城盐池是一座历史悠久的古老盐池。数千年来，在这块方圆一百二十里的盐滩上．盐工（盐丁）用他们辛勤的劳作，为代代王朝，元元之民，提供了大量的食盐和财富。历代的达官贵戚、文人墨客．观览这个宝地时，常用其生花妙...     

Thermodynamic equilibrium of CaSO4-Ca（OH）2-H2O system

The pc-pH diagrams of the CaSO4-Ca(OH)2-H2O system and its two subsystems at 298.15 K were constructed according to the theory of thermodynamic equilibrium. The interaction characteristics between the solubility of CaSO4(s) and Ca(OH)2(s) can be found out from the diagrams. CaSO4(s), Ca(OH)2(s) and solution coexist when the pH value of solution is about 13.2. CaSO4(s) with the minimum solubility of 0.411 g/L is in equilibrium with solution when the pH value is lower than 13.2, and Ca(OH)2(s) with the minimum solubility of 2.749 g/L is in equilibrium with solution at the pH value over 13.2, which provides a theoretical basis for the treatment and reuse of industrial wastewater, especially for the wastewater containing sulfate which can be treated by lime-milk neutralization.     

Hydro-chemical conversion of galena in FeCl3-KCl solution

The behaviours of complexation and dissolution of PbCl₂ on the surface of galena were investigated to explore the process of hydro-chemical conversion of galena (PbS) in chloride media. By means of solution chemistry calculation, the production and dissolution of the products PbCl₂ were studied. And the passivation of the galena was studied by Tafel curve. The results show that PbCl₄²⁻ is the main form of PbCl₂ presented in the saturated potassium chloride (KCl) solution. The PbCl₂ crystal is easy to precipitate when the total concentration of chloride ion ([Cl⁻]_T) is equal to 0.92 mol/L, and it is inclined to dissolve when [Cl⁻]_T is more than 0.92 mol/L. The chloride complexing reaction rate strongly depends on the Fe³⁺ion concentration when it is less than 6×10⁻⁴mol/L, while passivation occurs on the surface of the electrode when Fe³⁺ concentration is larger than 6×10⁻⁴mol/L. The reaction rate increases obviously when KCl is added, since the activity of Cl⁻ increases; thus accelerates the dissolution of PbCl₂.     

中、小型引水式水电站水工设计经验介绍

发源于天山北坡的河流一般都具有坡陡水急、水能梯级开发条件好的特点，但同时又存在大河来水丰枯变化大、泥沙多、冬季冰冻严重的问题。文章结合新疆实际，全面系统地介绍了中、小型引水电站在引水、泄洪、排沙、排沙和防冰破坏方面的水工设计经验。     

年产80万t吨水泥粉磨站的设计与调试

0 概述 华新红旗水泥有限公司现为华新集团的全资子公司,该公司始建于1958年,建厂初期为2台土立窑,     

高校思想政治理论课"边缘化"的表现、成因及其对策

在高校,思想政治理论课不受重视,被边缘化,已是一个不容置疑的事实.造成思想政治理论课"边缘化"的原因是多方面的.要使这一问题得到解决,需要思想政治理论课教师努力营造一个有利于思想政治理论课教学的经济、政治与社会环境,还需要思想政治理论课教师纠正思想认识上的偏差,加大教学改革的力度,努力提高自身政治理论素养.     

快卸卡箍螺栓断裂原因分析

通过断口形貌观察、X射线能谱分析、金相检验和硬度检测等试验方法,对某燃油供油导管快卸卡箍螺栓的断裂原因进行了分析,并与螺栓冲击断口和氢致疲劳断口进行了比较分析。结果表明:该快卸卡箍螺栓断口特征与冲击断口和氢致疲劳断口明显不同,其断裂性质为应力腐蚀断裂,裂纹起源于螺栓光杆段的侧表面;螺栓表面加工粗糙且没有防护对裂纹的萌生有一定的影响。对螺栓表面进行防腐处理可有效避免该类故障的再次发生。