Vol.4,No.4
Vol.4,No.4目录
综述
1,2016年上半年锆系列产品市场情况
2,2016年上半年钛白粉市场的回顾
3,TiAl合金精密铸造及定向凝固用耐火材料的研究现状
科学实验
4,Zr-4 合金管材轧制折叠形成理论模型研究
5,涡流双频检测技术在锆管生产中的应用
6,氧化铪废料碱熔工艺研究

时事经济

行业动态

综述
1、2016年上半年锆系列产品市场情况
黄超华,陈潮钿,杨福东
(广东东方锆业科技股份有限公司,汕头 515821)

摘 要:对市场上现有的锆系列产品进行了分类,重点介绍了氯氧化锆、硅酸锆、电熔锆、复合锆粉料、海绵锆等各产品2016年上半年的市场状况,并对各类锆产品目前市场行情和未来发展趋势进行了分析和预测。
关键词:锆系列产品  2016年  市场行情  发展趋势

2、2016年上半年钛白粉市场的回顾
任敏1,2,毕胜1,2
(1.钛白粉产业技术创新战略联盟秘书处,江苏 常州 213016,2.国家化工行业生产力促进中心钛白分中心,江苏 常州 213016)
摘要 本文回顾了2016年上半年钛白粉市场和价格的变化,认为下半年市场涨价的预期越来越小,价格或将回落,但回落的空间也会保持在理性的价格内,出现如去年那样低于大多生产商的成本价的情况的几率已然很小。
关键词 钛白粉  2016年上半年  市场  价格

3、TiAl合金精密铸造及定向凝固用耐火材料的研究现状
贺进1,周汉1,朱文琪1,鲁雄刚1,2,李重河[上海市科委基金项目(项目编号:11520500100,11DZ2283400);
国家自然科学基金项目(项目编号:51225401, 51374142);
钢铁冶金新技术国家重点实验室开放课题(KF12–05)资助项目
作者简介:贺进(1989-),男,安徽潜山人,硕士研究生,主研究方向:TiAl 合金定向凝固研究
通讯作者:李重河(1962-),男,教授,博士,021-56332934,chli@staff.shu.edu.cn
          鲁雄刚(1969-),男,教授,博士,021-56335768,luxg@staff.shu.edu.cn
],2
(1.省部共建高品质特殊钢冶金与制备国家重点实验室、上海市钢铁冶金新技术开发应用重点实验室和上海大学材料科学与工程学院, 上海 200072,中国;)
(2.上海特种铸造工程技术研究中心,上海 201605,中国)
 
摘  要: TiAl 金属间化合物具有低密度、高弹性模量、高比强度、良好的抗高温蠕变和抗高温氧化性能,被认为是最具潜力的高温结构材料,在航空航天及汽车发动机领域具有广阔的应用前景,特别是经定向凝固得到的TiAl合金在综合机械性能上可得到良好的配合。然而,TiAl合金熔体具有高的化学活性,会与所有已知的耐火材料发生反应,限制了其定向凝固铸件的生产和应用。本文首先回顾了TiAl合金的熔炼技术,然后对TiAl合金精密铸造及定向凝固用耐火材料的研究现状进行了总结,在此基础之上提出了一种新型的TiAl合金定向精铸用BaZrO3 耐火材料,并对其今后的发展作出了展望。 
关键词:  TiAl合金;定向凝固;耐火材料;BaZrO3
Development of refractories used in investment casting and directional solidification of TiAl alloys
He jin1, Zhou Han1, Zhu Wenqi1, Lu Xionggang1,2, Li Chonghe1,2 
( 1.  State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy& School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China; )
(2.  Shanghai Special Casting engineering technology research center, Shanghai 201605, China)

Abstract: Because of the low density, high Young’s modulus, high specific strength and good oxidation resistance and creep resistance at elevated temperatures, TiAl alloys have been extensively studied and considered as potential high temperature structural materials for the aerospace and automotive industries. Especially the directional solidified TiAl alloys can get a good balance of mechanical properties. However, the high reactivity between the molten alloys and the commercial ceramic crucible materials has prevented the future application. In this paper, a brief history of melting technology of TiAl alloys is reviewed and then a summary about the development of refractories used in precision casting and directional solidification of TiAl alloys is presented. Furthermore a new BaZrO3 refractory used in directional solidification is mentioned, its future direction is also discussed.
Key words:  TiAl alloys; directional solidification; refractories; BaZrO3

4、Zr-4 合金管材轧制折叠形成理论模型研究
于军辉  于海慧 李小宁  
(国核宝钛锆业股份公司,陕西,宝鸡,721003)
摘要:本文利用电镜对Zr-4成品管材ΦD1×T1和Zr-4管坯ΦD2×T2内表面缺陷形貌以及成品管材ΦD1×T1缺陷掰开面进行观察,并建立了Zr-4成品管材ΦD1×T1折叠形成的假设模型。结果表明:Zr-4成品ΦD1×T1管材内表面缺陷为折叠缺陷。Zr-4管坯ΦD2×T2内表面存在缺陷,在后续的轧制过程中会产生折叠。建立的Zr-4合金管材折叠模型与试验结果一致,可对生产具有一定指导作用。
关键词:Zr-4 成品管材; 折叠;内表面缺陷;轧制

Modeling of the fold on Zr-4 alloy tube in the rolling
Yu Junhui Yu Haihui Li Xiaoning
 (State Nuclear BaoTi Zirconium Industry Company, Baoji, 721013, China)
Abstract:In this paper, the flaw inside of the Zr-4 alloy tube (ΦD1×T1和ΦD2×T2) and flaw surface was also researched by SE. The results show that the flaw inside surface of the Zr-4 tube is fold. The model which is built for fold in the rolling is as the same as the practice result, and is also an effective tool to guide for the industrial production
Keyword:Zr - 4 finished tubes; Fold; The inner surface defects; rolling

5、涡流双频检测技术在锆管生产中的应用
孙凤玲 李恒羽 韩明星 李文科
(国核宝钛锆业股份公司,陕西宝鸡 721014)
摘 要:通过理论分析,结合现场生产实际情况,进行了涡流双频检测参数的确定,介绍了涡流双频检测 技术在核用锆合金管材生产中的实际应用,进一步验证了涡流双频检测技术在核用锆合金管材质量检验中 的实用性和重要性。
关键词:涡流检测;双频技术;核用锆管;应用
Dual-frequency eddy current testing technology in the application of zirconium tube production Sun Feng-ling,Li Heng-yu, Han Ming-xing, Li Wen-ke
(State Nuclear BAO Ti Zirconium Industry Company, Shaan Baoji 721014, China)
Through   theoretical   analysis,   in   combination   with   the   practical   situation   of   the production, the determination of the dual-frequency eddy current testing parameters, this paper introduces the dual-frequency eddy current testing technology in the practical application of produce zirconium alloy tubing for nuclear, further verify the dual-frequency eddy current testing technology in nuclear with zirconium alloy    tubing practicability and the importance of quality inspection.

6、氧化铪废料碱熔工艺研究
孙玉璞,张建东,吴明,闫国庆,彭家庆,王力军
(北京有色金属研究总院稀有金属冶金材料研究所,北京 100088)
摘要:  以氢氧化钾、氢氧化钠和氢氧化锂为分解剂对氧化铪靶材废料进行了碱分解的对比实验。结果表明:, 反应温度在500℃~800℃范围内,分解剂与氧化铪摩尔的比3:1,反应时间2h, 氧化铪粒度38~45 μm时,选择KOH为碱分解剂时,氧化铪的分解率明显高于选用其他两种分解剂时的分解率,因此选择氢氧化钾为分解剂进行氧化铪靶材废料的碱分解实验。实验研究了反应温度、配比、原料粒度和反应时间等因素对氧化铪分解率的影响。结果表明:提高反应温度、物料配比、反应时间和减小原料粒径均能提高氧化铪的分解率,在温度为800℃,氢氧化钾与氧化铪的摩尔比为2.7:1.0,原料粒度45~53 μm,反应时间为2 h的实验条件下,氧化铪的分解率可达到96%以上。研究配比对产物影响表明:当KOH/HfO2摩尔比为3:1,高于理论值(2:1)时,发生反应:HfO2+2KOH= K2HfO3;KOH/HfO2摩尔比为1:1时,在反应的初始阶段,氢氧化钾与氧化铪反应生成K2HfO3,K2HfO3包裹在颗粒表面与氧化铪继续发生反应:K2HfO3+ HfO2= K2Hf2O5,生成K2Hf2O5。
关键词:氧化铪废料;氢氧化钾;碱分解;分解率;
中图分类号:TQ134.1      

Decompositon Process of Hafnia Scrap via Alkali Fusing
Sun Yupu, Zhang Jiandong, Wu Ming, Yan Guoqing , Peng Jiaqing Wang Lijun
(Division of Rare Metals Metallurgy and Materials, General Research Institute for Nonferrous Metals, Beijing 100088, China)

Abstract: The contrast experiment of alkali decomposition for HfO2 scrap was performed with KOH, NaOH and LiOH as decomposition agent under the same conditions. The results showed that when selecting KOH as decomposition agent, the decomposition rate of hafnium oxide was significantly higher than other two kinds of decomposition agent with the condition that molar ratio of alkali to hafnia of 3:1, particle size 38~45 μm within the scope of reaction temperature 500~800℃ for 2 h . Consequently, potassium hydroxide was selected as the decomposition agent. The effects of reaction temperature, mole ratio of alkali to hafnium oxide, particle size and alkali fusion time on the decomposition of hafnium oxide were primarily investigated in this study. The investigation showed that decomposition rate of hafnia increased with the reaction temperature, mole ratio of alkali to hafnium oxide, alkali fusion time increasing and the particle size decreasing , the decomposition rate was over 96% with the condition that KOH/HfO2 molar ratio of 2.7:1.0, particle size of hafnia of 45~53 μm at 800℃ for 2 h. The study of effects of molar ratio (KOH/HfO2) on decomposition rate showed that when KOH/HfO2 molar ratio was 3:1 higher than the theoretical value (2:1) to generate: HfO2+2KOH= K2HfO3; when the KOH/HfO2 molar ratio was 1:1,, in the initial stage of reaction, the reaction of potassium hydroxide and hafnia generated K2HfO3, which was wrapped in particle surface, and then reacted with hafnia to generate K2Hf2O5: K2HfO3+ HfO2= K2Hf2O5
Key Words: hafnia scrap; potassium hydroxide; alkali decomposition; decomposition rate

时事经济(略)

行业动态(略)