钛醇盐水解制取高纯TiO2微粉的研究

介绍了钛醇盐的合成方法，在惰性溶剂中，以自制钛乙醇盐为的料，探讨了钛醇盐水解制取高纯ＴｉＯ２微粉的方法。研究了反应物浓度，温度，水量，搅拌速度，分散剂以及干燥，煅烧等对ＴｉＯ２粒子特性的影响规律，制备出纯度≥９９．５％，粒径〈１．０μｍ，近似球形的ＴｋＯ２微粉。用其做成ＰＴＣ电子元件，其电性能接近日本ＴＤＫ，同类产品的技术指标。     

碳饱和铁液与CaO—SiO2—TiO2系熔渣间TiO2的还原

实验研究了碳饱和铁液与ＣａＯ－ＳｉＯ２－ＴｉＯ２（％ＴｉＯ２）＜１８）系熔渣间（ＴｉＯ２）的还原速度，同时考察了初渣碱度，温度对（ＴｉＯ２）还原速度的影响，研究结果表明：在本实验体系中，在初渣碱度Ｂ＝（％ＣａＯ）／（％ＳｉＯ２）＝０．５４－１．５范围内，随着碱度的升高，（ＴｉＯ２）的还原速度加快，而温度的提高也能加快（ＴｉＯ２）的还原速度。建立了在该实验体系中（ＴｉＯ２）被铁液中的溶解碳还原的速度     

Cu—C—Ti系和Cu—CuO—Al系合金粉末的机构合金化

将Ｃｕ－Ｃ３．３％－Ｔｉ１３．３％和Ｃｕ－ＣｕＯ２．５％－Ａｌ１．１％二合金粉末分别进行机械合金化，结果发现，经２０ｈ球磨后，Ｃ的衍射峰已经消失，Ｔｉ，Ａｌ，ＣｕＯ的衍射峰强度显著降低；６０ｈ球磨后，二合金粉末都形成了Ｃｕ基过饱和固溶体；１００ｈ球磨后，部分Ｔｉ，Ｃ，Ａｌ，Ｏ溶质元素脱溶析出，并反应生成ＴｉＣ和Ａｌ２Ｏ３。     

TZP／TiC／Al2O3陶瓷复合材料在模具中的应用

采用ＴＺＰ相变和ＴｉＣ颗粒共同增韧Ａｌ２Ｏ３，使ＴＺＰ／ＴｉＣ／Ａｌ２Ｏ３复合材料的抗弯强度σｆ和断裂韧度ＫＩＣ分别达到１１０６ＭＰａ和１１．８６ＭＰａ·ｍ＾１／２。探讨了复合材料在用作螺旋丝拉拔模具时的磨损和破损行为，研究了ＴＺＰ和ＴｉＣ对模具磨损和破损性能的影响。     

水热合成技术的研究和应用：VI.钛酸钙电子陶瓷晶体粉末的制备研究

采用水热法合成ＣａＴｉＯ３电子陶瓷晶体粉末，以Ｃａ（ＯＨ）２和Ｔｉ（ＯＨ）２为水热合成前驱物，制备前驱物的原料选用Ｃａ（ＮＯ３）２或ＣａＯ及ＴｉＣｌ４水热体系的ＫＯＨ浓度为０．１～１．６ｍｏｌ／Ｌ，水热温度为１５０～２００℃，时间２０～６０ｍｉｎ实验结果表明在各自实验范围均能效合成ＣａＴｉＯ３推荐合成条件为１７５℃，３０ｍｉｎ，水热体系ＫＯＨ浓度０．２ｍｏｌ／Ｌ，文中对合成机理进行初步探讨。     

CaO—SiO2—Al2O3—MgO—TiO2—FeO渣系熔融还原过程中TiC的生成机理

在实验室条件下，测定了熔融还原过程中ＣａＯ－ＳｉＯ２－Ａｌ２Ｏ３－ＭｇＯ－ＴｉＯ２－ＦｅＯ系炉渣组成以及不同供碳对ＴｉＣ生成的影响，并进行了热力学分析。研究结果表明：ＴｉＣ的生成机理与工艺条件密切相关。     

利用高氮化能力的熔剂精炼钢除氮

利用试验技术通过调整和精确控制１８７３Ｋ时的氧分压Ｐｏ２测定了Ａｌ２Ｏ３－ＣａＯ－ＴｉＯ２和ＣａＦ２－ＴｉＯ２熔剂中氮的溶解度和氮化能力。据试验发现，熔渣和铁水之间的氮分配比以及金属的脱氮度是Ｐｏ２的函数。文章研究了采用含ＴｉＯ２的熔剂从纯铁和铬合金钢中的除氮工艺，即首先把炉渣与金属粉末混合，然后在１８７３Ｋ坩埚中加热熔化，并将熔融金属从１０ｋｇ感应炉出钢至包中。系统中的氧分压可通过精炼剂中铝或钛含量进行调整。试验结果表明Ａｌ２Ｏ３－ＣａＯ－ＴｉＯ２渣可除去低合金钢中氮，脱氮度可超过６０％。文章讨论了生产过程中采用含ＣａＦ２－ＴｉＯ２熔剂的炉渣进行钢包处理有效去除高合金钢中氮的技术参数。     

Ru（bpy）2（NCS）2染料敏化PbS／Zn^2＋—TiO2复合半导体纳米多孔膜电极 …

采用水热法合成了Ｚｎ＾２＋离子掺杂的ＴｉＯ２纳米粒子（掺杂量０．５），并用光电化学方法研究了Ｒｕ（ｂｐｙ）２（ｂｐｙ＝２，２’－ｂｉｐｙｄｉｎｅ－４，４’－ｄｉｃａｒｂｏｘｙｌｉｃ ａｃｉｄ）分别敏化Ｚｎ＾２＋掺杂的ＴｉＯ２电极和ＰｂＳ／Ｚｎ＾２＋－ＴｉＯ２复合半导体纳米多孔膜电极的光电化学行为。实验证明Ｒｕ（ｂｐｙ）２（ＮＣＳ）２敏化ＰｂＳ／Ｚｎ＾２＋－ＴｉＯ２复合半导体纳米多孔膜电极比单独敏化     

金红石和锐钛型TiO2的X射线衍射定量分析

就Ｄ／ｍａｘ－ＲＣ转靶Ｘ射线衍射仪对金红石和锐钛型ＴｉＯ_２定量分析精度和主要误差因素进行了探讨。指出金红石和锐钛型ＴｉＯ_２定量分析用纯标样法和Ｋ值法配合使用为宜；在Ｃｕ－Ｋα辐射条件下（衍射峰背底扣除△２θ在０．７～１．２°之间），扫描速度≤５°／ｍｉｎ，试样中金红石或锐钛型ＴｉＯ_２含量在１５％以上，定量误差＜５％。     

电渣重熔1Cr18Ni9Ti专用TiO2渣系的试制

本文论述了电渣重熔冶炼１Ｃｒ１８Ｎｉ９Ｔｉ专用ＴｉＯ２渣系的试制过程。国内外虽有含ＴｉＯ２定型电渣牌号，适用于电渣重熔含有钛的合金使用，但对于钢丝厂生产１Ｃｒ１８Ｎｉ９Ｔｉ标准中含钛的范围不适用，并且加入２５％ＴｉＯ２使渣系成本大为提高。     

熔炼次数对M17返回料合金成分、组织和性能的影响

实验结果表明,M17铸造高温合金(%:0.16C、8.79Cr、5.79A1、4.93Ti、3.29Mo、15.20Co、0.78V、0.015B、0.073Zr、0.002S、0.001P、0.001 1O、0.001 0N)经25 kg真空感应炉返回重熔后,Si含量随重熔次数的增加而略有增加,合金中主要元素和其它杂质元素S、P、H的含量变化不大,而氧、氮略有增加;合金中初生碳化物由新合金中的草书体逐渐向返回合金块状转变,初生碳化物的遗传性堵塞合金凝固时的补缩通道,使返回料合金的疏松倾向增大,高温塑性下降较大。     

Shijiazhuang will Build the World's Biggest Replacingcopper-with-aluminum Cable Production Base

正Shijiazhuang City will build the world’s biggest replacing-copper-with-aluminum cable production base,the annual output value can reach 100 billion yuan,in the future it will develop replacing-copper-with-aluminum highend industry cluster.This piece of news was learned by the reporter at the Rare Earth highiron Aluminum Alloy[Nonferrous Business Opportunity:Aluminum alloy door]Cable Conductor New Technology Application Seminar held at the provincial capital.     

Chongqing is Preparing to Set Up Nonferrous Metal Exchange,in a Bid to Become the Transit Place of Kazakhstan Copper

正Since the beginning of Chongqing’s upgrading to a municipality directly under the Central Government,Chongqing City has established direct friendly relationship with Almaty,Kazakhstan,and carried out a series of cooperation in commerce and trade,and culture     

Guangxi Baise Extends Industrial Chain to Combat Loss in Aluminum Business

正"For each tonne of aluminum being produced,the upstream enterprise on the aluminum industrial chain will suffer loss about 2000yuan."Said Liang Xiao,Deputy Director of Pingguo Industrial Park Management Committee under the Guangxi Baise City,one of the four major aluminum industry bases in China,on August 11.Extending aluminum     

JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL ANNUAL CONTENTS Volume 21(2014)

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Chinalco Straightened Out Copper Assets,and Delegated Stock Equity of Yunnan Copper

正Immediately after the news that Chinalco transferred 58%stock equity of Yunnan Copper Group to its wholly-owned subsidiary China Copper Corporation Limited free of charge was disclosed on July 9,many individual investors couldn’t help but to think:Does it mean China Copper Corporation Limited will assemble assets for overall listing?At present,among main copper business companies under China Copper Corporation     

The Development and Reform Commission Encourages Private Capital to Enter Geological Prospecting Field

正At the press conference recently held by the National Development and Reform Commission under the theme"Deepen Reform in Investment AuditApproval System",when answering questions from reporters,Huang Min,Director of the Department of Fixed Assets Investment of the National Development and Reform Commission,said that in the future it would continue to intensify efforts in geological prospecting,and actively guide social capital to enter this field.     

Guangxi's first Nickel Industry Development Research Report Was Released

正Recently,Guangxi Metallurgical Research Institute,a subsidiary of Guangxi Nonferrous Metals Group,completed survey on laterite and related manufacturers in the region,by combining the current development status of laterite both at home and abroad,it compiled Guangxi’s first"Research Report on the Development of Guangxi Nickel Industrial Chain"which adopted laterite as the study subject.This report expounded on the current     

China’s Major Non-ferrous Metals Imports & Exports(End of September. 2014)

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China's Major Non-ferrous Metals Imports & Exports

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