TiH_(2)压坯烧结脱氢性能试验研究  

Performance Testing Study on Compacted Sintering Dehydrogenation of TiH_(2)

作　　者：张报清[1,2,3] 孙应 李亚东 李永佳 沈波涛[4] ZHANG Bao-qing;SUN Ying;LI Ya-dong;LI Yong-jia;SHEN Bo-tao(Kunming Metallurgy College,Kunming,Yunnan 650033,China;Faculty of Metallurgy and Energy Engineering,Kunming University of Science and Technology,Kunming,Yunnan 650093,China;Kunming Key Laboratory of Comprehensive Utilization Resources of Rare and Precious Metals,Kunming,Yunnan 650033,China;Zhejiang Huayou Cobalt Co.,Ltd.,Jiaxing,Zhejiang 314500,China)

机构地区：[1]昆明冶金高等专科学校,云南昆明650033 [2]昆明理工大学冶金与能源工程学院,云南昆明650093 [3]昆明市稀散及贵金属资源综合利用重点实验室,云南昆明650033 [4]浙江华友钴业股份有限公司,浙江嘉兴314500

出　　处：《云南冶金》2023年第3期98-102,共5页Yunnan Metallurgy

基　　金：云南省教育厅科学研究基金(2020J0766)、(2022J1032);昆明冶金高等专科学校科研基金项目(2021XJZK04)。

摘　　要：试验将TiH_(2)压坯在氩气气氛保护下以10℃/min的升温速率升温加热,进行TiH_(2)粉体TG和DSC检测。TiH_(2)压坯在真空烧结炉中以不同温度烧结并保温2 h,计算氢化钛压坯不同烧结温度下的脱氢率,分析TiH_(2)脱氢物相显微组织。结果表明:脱氢过程是一个吸热过程,TiH_(2)的分解有两个明显的吸热峰。TiH_(2)在(400~600)℃之间失重率的变化最大。XRD脱氢物相分析得到原料化合物的物相为TiH_(1.924)。TiH_(2)原料开始分解温度为400℃,当温度达到700℃时TiH2脱氢结束。TiH_(2) compact with the protection of argon atmosphere was heated up in speed of 10℃/min,in order to conduct TG and DSC detection of TiH2 powder.Sintering of TiH_(2) compact was carried out in vacuum sintering furnace with different temperature and heat preservation was done for 2 h,the dehydrogenation rate of titanium hydride under different sintering temperature was calculated,and dehydrogenate phase microscopic structure of TiH_(2) was analyzed.Results show:dehydrogenation process is a endothermic process,the decomposition process of TiH_(2) has two obvious endothermic peak.TiH_(2) has maximum weight-loss rate in the range of(400~600)℃.Compound phase of raw material is TiH_(1.924) got by XRD dehydrogenate phase analysis.The initial decomposition temperature of TiH_(2) raw material is 400℃,when the temperature reach to 700℃,the dehydrogenation of TiH_(2) is ended.

关 键 词：钛粉 TiH_(2) 冷等静压 烧结 脱氢 

分 类 号：TG146.23[一般工业技术—材料科学与工程]