Microstructural Control of Mg_2Ni Hydrogen Absorbing Alloys by Rapid Solidification and Mechanical Grinding
快速凝固和机械研磨对Mg_2Ni吸氢合金的显微组织控制
基本信息
- 批准号:09650757
- 负责人:
- 金额:$ 1.79万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:1997
- 资助国家:日本
- 起止时间:1997 至 1998
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
In this study, for improvement in performance of batteries used in electric vehicles, we paid attention to Mg_2Ni protium absorbing alloy that has high protium absorption capacity, lightweight and low price as compared with the existing protium absorbing alloys. But Mg_2Ni alloy has high protium absorption and desorption temperature and slow hydriding kinetics that must be improved for practical purposes.Therefore, for the purpose of decreasing protium absorption and desorption temperature and improving protium absorption rate, we did a partial substitution of Mg_2Ni by third alloying elements. Mn, Fe, Co, Cu, Al, Zn and Ag which are expected to decrease the absolute value of hydride formation enthalpy of Mg_2Ni alloy were selected as third substitutional elements. The ternary alloys were also rapidly solidified, and mechanically ground in order to homogenize their microstructure. The microstructures of specimens obtained by these processes were observed and their protium absorbing and … More desorbing characteristics were investigated. Obtained results are summarized as followed ; (1) All activated specimens absorb protium at room temperature and their protium contents are higher than those of specimens before activation that causes new surface formation and an increase in reaction area. (2) Hydriding kinetics curves measurements show that rapidly solidified specimens of Mg_2Ni_<0.9>Co_<0.1> and Mg2Ni_<0.9>Fe_<0.1> alloys have the highest reaction rate. It is considered that Fe and Co substitution accelerated the diffusion of protium in these two alloys and rapid solidification cause the fine microstructure. (3) As the elapsed time after taking specimens out from hydrogen atmosphere increases, the protium desorption temperature decreases and desorbed protium contents increases. Microstmctural changes of the hydride from high temperature phase to low temperature phase probably causes this phenomenon. Similar results can be obtained when manually hydride of manually ground specimens after activation shows the same microstructural change, resulting in improvement of the desorption characteristics. (4) By addition of third alloying elements and Ni substitution, both activation energy and enthalpy for dehydriding decreases.From the above results, rapid solidification, mechanical grinding and substitution by 3d transition metals for Ni site in Mg_2Ni crystal structure are effective for improving the protium absorbing and desorbing characteristics of Mg_2Ni alloy. Less
在本研究中,为了提高电动汽车用电池的性能,我们关注的是与现有的吸收合金相比,具有高吸收容量、重量轻、价格低的镁镍吸收合金。但由于镁镍合金具有较高的锶吸脱附温度和较慢的吸放氢动力学,因此,为了降低锶的吸脱附温度,提高锶的吸收率,我们用第三合金元素对镁镍合金进行了部分替代。选择有望降低镁镍合金氢化物生成热绝对值的Mn、Fe、Co、Cu、Al、Zn、Ag等元素作为第三替代元素。还对三元合金进行了快速凝固和机械研磨,以使其组织均匀。观察了这几种工艺制备的样品的微观结构,并对其进行了吸钚和…分析。考察了更多的解吸特性。主要研究结果如下:(1)活化后的样品在室温下都吸附了钚,其含量高于活化前的样品,形成了新的表面,增加了反应面积。(2)吸氢动力学曲线测试表明,快速凝固的Mg_2Ni_t;0.9>;Co_<;0.1>;和Mg_2Ni_<;0.9>;Fe_<;0.1>;合金具有最高的反应速率。认为Fe、Co替代促进了两种合金中Pr的扩散,快速凝固形成了细小的显微组织。(3)随着样品从氢气氛中取出后时间的增加,脱附温度降低,脱附的含量增加。这可能是氢化物由高温相向低温相转变的微观结构变化所致。人工氢化处理的样品经活化处理后,其微观结构也发生了相同的变化,从而改善了脱附特性。(4)添加第三合金化元素和Ni替代后,合金的脱氢活化能和脱放热都有所降低,快速凝固、机械研磨和用3D过渡金属取代Mg_2Ni晶体结构中的Ni位是改善Mg_2Ni合金吸、放钚性能的有效方法。较少
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
H.Okumura, Y.Momokawa, S.Kmado, Y.Kojima, M.Yamamoto and T.Kohno: "Effect of Mechanical Grinding and Substitutional Elements on Structure and Hydrogen Absorbing Characteristics of Mg_2Ni Interetallic Compound" Proceedings of International Symposium on Des
H.Okumura、Y.Momokawa、S.Kmado、Y.Kojima、M.Yamamoto和T.Kohno:“机械研磨和取代元素对Mg_2Ni金属间化合物结构和吸氢特性的影响”国际设计研讨会论文集
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
H.Okumura, Y.Momokawa, S.Kamado, Y.Kojima, M.Yamamoto and T.Kohno: "Microstructure and Hydrogen Absorbing Characteristics of Mg_2Ni Alloys" Proceedings of The International Conference on Magnesium Alloys and Their Applications. 175-180 (1998)
H.Okumura、Y.Momokawa、S.Kamado、Y.Kojima、M.Yamamoto 和 T.Kohno:“Mg_2Ni 合金的微观结构和吸氢特性”镁合金及其应用国际会议论文集。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
R.Uchida, H.Okumura, T.Tabata, S.Kamado, Y.Kojima, M.Yamamoto and T.Kohno: "Protium Absorption and Desorption Characteristics of Mg_2Ni Alloys" Abstracts of the 95^<th> Conference of the Japan Institute of Light Metals. 219-220 (1998)
R.Uchida、H.Okumura、T.Tabata、S.Kamado、Y.Kojima、M.Yamamoto 和 T.Kohno:“Mg_2Ni 合金的氕吸收和解吸特性”第 95 届日本会议摘要
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
田端 享: "Mg_2Ni系合金のプロチウム吸蔵・放出特性に及ぼす置換元素の影響" 第96回軽金属学会春期大会講演概要集. 印刷中.
Takashi Tabata:“替代元素对 Mg_2Ni 合金的氕吸留和解吸性能的影响”日本轻金属学会第 96 届春季会议摘要,目前正在印刷。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
Y.Momokawa, H.Okumura, S.Kamado, Y.Kojima, M.Yamamoto and T.Kohno: "Influence of Heat Treatment, Rapid Solidification and Mechanical Grinding on Hydrogen Absorption and Desorption Characteristics of Mg_2Ni Alloys" Abstracts of the 93^<st> Conference of Ja
Y.Momokawa、H.Okumura、S.Kamado、Y.Kojima、M.Yamamoto 和 T.Kohno:“热处理、快速凝固和机械磨削对 Mg_2Ni 合金吸氢和放氢特性的影响”93^摘要
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
KAMADO Shigeharu其他文献
KAMADO Shigeharu的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('KAMADO Shigeharu', 18)}}的其他基金
Elucidation of the high-performance expression mechanism of heterostructural magnesium alloys and its application to the structural control
异质结构镁合金高性能表达机制的阐明及其在结构控制中的应用
- 批准号:
25249101 - 财政年份:2013
- 资助金额:
$ 1.79万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Suppression of twin deformation by ordered nano-scale precipitate and its application to room temperature forming
有序纳米级析出物抑制孪晶变形及其在室温成形中的应用
- 批准号:
23656455 - 财政年份:2011
- 资助金额:
$ 1.79万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
Establishment of multi-scale structural controlling process technology aiming to high performance common magnesium alloys
高性能普通镁合金多尺度组织控制工艺技术的建立
- 批准号:
22246094 - 财政年份:2010
- 资助金额:
$ 1.79万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Establishment of Green Processing Technology for Magnesium Alloys
镁合金绿色加工技术的建立
- 批准号:
17206076 - 财政年份:2005
- 资助金额:
$ 1.79万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Fabrication of Premium Magnesium Castings by Semi-solid Forming Process
采用半固态成型工艺制造优质镁铸件
- 批准号:
11225207 - 财政年份:1999
- 资助金额:
$ 1.79万 - 项目类别:
Grant-in-Aid for Scientific Research on Priority Areas
Fabrication of Thin Aluminum Alloy Slab and Technological Development for Its Application
铝合金薄板坯的制备及其应用技术开发
- 批准号:
10555228 - 财政年份:1998
- 资助金额:
$ 1.79万 - 项目类别:
Grant-in-Aid for Scientific Research (B).
Development of Aluminum Recycling Technology
铝回收技术的发展
- 批准号:
07555187 - 财政年份:1995
- 资助金额:
$ 1.79万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
相似海外基金
Synthesis of hydrogen absorbing alloy in nanocarbons and evaluation of their properties for hydrogen absorption and separation
纳米碳吸氢合金的合成及其吸氢分离性能评价
- 批准号:
21360394 - 财政年份:2009
- 资助金额:
$ 1.79万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Direct Electrolysis Process of Hydrogen absorbing alloy films from Molten Salts and Film Characterization
熔盐直接电解吸氢合金膜工艺及膜表征
- 批准号:
10450280 - 财政年份:1998
- 资助金额:
$ 1.79万 - 项目类别:
Grant-in-Aid for Scientific Research (B).
Study on the Combustion Synthesis for Producing High Performance Hydrogen Absorbing Alloy
燃烧合成生产高性能吸氢合金的研究
- 批准号:
09450276 - 财政年份:1997
- 资助金额:
$ 1.79万 - 项目类别:
Grant-in-Aid for Scientific Research (B)