Study on Preparation of Hafnium Powder by Calciothermic Reduction of Hafnium Oxide AITranslate
Abstract AITranslate
Hafnium powder was prepared by reduction in CaCl2 molten salt system with calcium as reducing agent at different temperatures.The yield of hafnium powder is over 92% after acid washing, water washing and drying.The optimal temperature was determined by thermodynamic study, the particle size, morphology and composition of hafnium powder at different temperatures were analyzed, and the reaction process of calciothermic reduction of hafnium oxide was also studied.The results show that the optimum reaction temperature is about 1 000 ℃.The main phase of hafnium powder is Hf, and there is a small amount of ZrO2.At 950 ℃,there is CaHfO3 in hafnium powder, which indicates that the reaction of calciothermic reduction of hafnium oxide is divided into two steps.With the increase of reaction temperature, the particle size of hafnium powder increases, the morphology changes from granular and dendritic to massive, and the oxygen content decreases.
KeyWords AITranslate
1熊炳昆.神奇的稀有金属——铪[J].金属世界,2005(5):41-42. 被引量：4
2柳旭,李国勋,宋波,王力军.KCl-NaCl-K_2HfCl_6体系中熔盐电解精炼铪的研究[J].矿冶,2014,23(4):56-59. 被引量：5
3王芳,黄永章,王鑫,张顺利,王力军.金属热还原K_2HfF_6制备铪粉的研究[J].稀有金属,2013,37(2):272-276. 被引量：4
4贾雷,严红燕,李慧,刘畅,张帅.金属铪的制备和精炼[J].热加工工艺,2020,0(1):10-15. 被引量：1
5郑天新,梁精龙,李慧,贾磊,王斌.金属铪的制备及精炼工艺研究进展[J].热加工工艺,2019,48(23):1-4. 被引量：2
6郭树军,董雪平.铪在高温合金中的应用及回收[J].广州化工,2019,47(13):38-40. 被引量：1
7陶海燕,陈路,王世忠,樊宝全,兰光友.金属铪电子束焊接几何缺陷控制工艺[J].焊接技术,2018,47(4):150-153. 被引量：2
8柳旭,王力军,陈松,吴延科,王鑫.金属铪的制备方法研究进展[J].稀有金属,2013,37(2):312-319. 被引量：19
9叶章根,陈松,李文良,吴延科,王力军.熔盐电解精炼铪的研究[J].稀有金属,2012,36(5):791-798. 被引量：13
10万贺利,徐宝强,杨斌,刘大春,戴永年.真空钙热还原法制备金属钛粉的研究[J].真空科学与技术学报,2012,32(6):539-544. 被引量：9
1段西涛.仁以为己任 不亦重乎?--评《护理的温度》[J].中国医学人文,2021,7(6):72-72.
2陶成,戴曦.铁矾渣富氧强化还原挥发熔炼工艺研究[J].冶金工程,2021,8(2):76-86.
3郝君,王坤,张廷安.碳热还原多金属矿制备含钛硅铁合金的研究[J].稀有金属与硬质合金,2021,49(3):16-23.
4邵颖,李飞,张孔海,魏宗烽,杨小林,何璐.商城老鸭汤的制备工艺条件优化[J].中国调味品,2021,46(7):129-134. 被引量：1
5张萌,陈东圳,宁攀,任研伟,李阳,张亮.基于毛丹状Au@Ag合金纳米结构的活性细菌表面增强拉曼散射传感[J].激光生物学报,2021,30(3):200-206.
Basic Information:
DOI：
Chinese Library Classification Number:TF841.4[冶金工程—有色金属冶金]
Citation Information:
Hafnium powder was prepared by reduction in CaCl2 molten salt system with calcium as reducing agent at different temperatures.The yield of hafnium powder is over 92% after acid washing, water washing and drying.The optimal temperature was determined by thermodynamic study, the particle size, morphology and composition of hafnium powder at different temperatures were analyzed, and the reaction process of calciothermic reduction of hafnium oxide was also studied.The results show that the optimum reaction temperature is about 1 000 ℃.The main phase of hafnium powder is Hf, and there is a small amount of ZrO2.At 950 ℃,there is CaHfO3 in hafnium powder, which indicates that the reaction of calciothermic reduction of hafnium oxide is divided into two steps.With the increase of reaction temperature, the particle size of hafnium powder increases, the morphology changes from granular and dendritic to massive, and the oxygen content decreases.
quote
| GB/T 7714-2015 | [1] ZHANG Zhen, ZHENG Xin, ZHANG Xiao-lian. Study on Preparation of Hafnium Powder by Calciothermic Reduction of Hafnium Oxide[J]. Rare Metals and Cemented Carbides, 2021(3): 58-63. |
| MLA | [1] ZHANG Zhen, et al., "Study on Preparation of Hafnium Powder by Calciothermic Reduction of Hafnium Oxide." Rare Metals and Cemented Carbides, no. 3, 2021, pp. 58-63. |
| APA | [1] ZHANG Zhen, ZHENG Xin, & ZHANG Xiao-lian. (2021). Study on Preparation of Hafnium Powder by Calciothermic Reduction of Hafnium Oxide. Rare Metals and Cemented Carbides(3), 58-63. |
| IEEE | [1] ZHANG Zhen, ZHENG Xin, and ZHANG Xiao-lian, "Study on Preparation of Hafnium Powder by Calciothermic Reduction of Hafnium Oxide," Rare Metals and Cemented Carbides, no. 3, pp. 58-63, 2021. keywords: {calcium;hafnium powder;calciothermic reduction;reduction temperature;thermodynamics;particle size;morphology} |