Mn、 Ti/Cr 比與熱處理對 Ti-V-Cr 儲氫合金結構與特性之影響 ;Effect of Mn addition﹐Ti/Cr ratio and heat treatment on structural and hydrogen storage characteristics of Ti-V-Cr alloys

NCUIR > Engineering College > Energy of Mechatronics > Electronic Thesis & Dissertation > Item 987654321/1772

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Title:	Mn、 Ti/Cr 比與熱處理對 Ti-V-Cr 儲氫合金結構與特性之影響;Effect of Mn addition﹐Ti/Cr ratio and heat treatment on structural and hydrogen storage characteristics of Ti-V-Cr alloys
Authors:	吳育丞;Yu-Cheng Wu
Contributors:	能源工程研究所
Keywords:	Ti-V-Cr-Mn 合金;熱處理;儲氫合金;BCC 相;Annealing treatment;Ti-V-Cr-Mn alloys;BCC phase;Hydrogen storage alloys
Date:	2007-06-30
Issue Date:	2009-09-21 11:30:19 (UTC+8)
Publisher:	國立中央大學圖書館
Abstract:	本實驗將研究 Ti-V-Cr BCC 相儲氫合金的結構與吸放氫特性，藉由 Mn 元素的添加、改變 Ti/Cr 比與熱處理製程等方面探討，以期能了解各參數與吸放氫間關係。結果顯示鑄態 Ti33V33Cr34 合金有優良的活化速率，在第一次活化之初始 10 min 時，吸氫量即達最大吸氫量的 95 %。當 Mn 的添加不超過 15 at.% 時，有助於提昇鑄態 Ti33V33Cr(34-x)Mnx 合金放氫量，其 Ti33V33Cr19Mn15 合金最佳有效放氫量為 2.48 wt.%。降低鑄態 Ti(33-y)V33Cr(19+y)Mn15 合金中的 Ti/Cr 比可提高放氫平台壓，但也伴隨著最大吸氫量的減少。當 Ti31V33Cr21Mn15 合金在 1200 ℃ 下經 10 h 之熱處理，有效提高放氫平台壓並減少 PCI 平台斜率。 Effect of Mn addition, Ti/Cr ratio and heat treatment on structural and hydrogen storage characteristics of Ti-V-Cr alloys were investigated. It was found that the hydrogen absorption rate of Ti33V33Cr34 alloy was considerably fast and more than 95 % of the hydrogen was absorbed within 10 min. The hydrogen desorption capacity was improved when the Mn contained less than 15 at.%. The best effective hydrogen storage capacity of Ti33V33Cr19Mn15 alloy was 2.48 wt.%. The plateau pressure increased with Ti/Cr ratio decreasing for the Ti(33-y)V33Cr(19+y)Mn15 alloys, however, the maximum hydrogen storage capacity decreased. The Ti31V33Cr21Mn15 alloy increased the plateau pressure and decreased the plateau slope after annealing at 1200 ℃ for 10 h.
Appears in Collections:	[Energy of Mechatronics] Electronic Thesis & Dissertation

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