Hydrogen Embrittlement of Metal Membrane Detected by In-situ Measurement under Hydrogen Permeation and Elucidation of Embrittlement Mechanism of Niobium based Metal Membranes

氢渗透下原位测量金属膜氢脆并阐明铌基金属膜脆化机理

基本信息

批准号：
17560624
负责人：
MATSUMOTO Yoshihisa
金额：
$ 2.18万
依托单位：
Oita National College of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2006
项目状态：
已结题

项目摘要

This research aims at (1) establishment of the hydrogen embrittlement in-situ measuring method of the metallic hydrogen permeable membranes, (2) elucidation of the effects of dissolved hydrogen on the mechanical properties and (3) suggestion some guidelines of a new metallic membrane design which can be sustainable hydrogen pressure difference. The results are as follows.1. By using a newly developed in-situ small punch apparatus, the mechanism of hydrogen embrittlement of pure niobium metal membrane was investigated under hydrogen permeation.2. The coverage for the ductile-brittle transition of the palladium-coated niobium membrane was determined by a series of the in-situ small punch test and the PCT measurements (Sievert's method). Compared with the one proposed by previous reports, the measured boundary showed great shift to the lower hydrogen content region.3. The membrane was deformed and fractured easily when about 10% lattice contraction was introduced to it by lowering the hydrogen pressure at 673K, at which the dehydrogenation reaction progressed smoothly.4. Although, under the practical hydrogen pressure conditions, pure niobium dissolves a great amount of hydrogen and causes remarkable embrittlement, the reduction of dissolving hydrogen concentration can control the proof hydrogen embrittlement.5. An alloy design planned so as to obtain high hydrogen concentration difference on both sides of the membrane can become a new niobium membrane provided with both hydrogen permeability and strong resistance against hydrogen embrittlement. For instance, when palladium was added to niobium, the amount of dissolved hydrogen decreased, and palladium addition contributed to giving the resistance to hydrogen embrittlement6. The present results will provide us with a clue to the design of niobium-based permeable membrane against the hydrogen embrittlement.

这项研究的目的是（1）建立金属氢渗透膜的氢含水原位测量方法，（2）阐明溶解氢对机械性能的影响，（3）建议一些新的金属膜设计的指南，这可能是可持续的氢压力差异。结果如下1。通过使用新开发的原位小打孔器，在氢渗透下研究了纯野膜金属膜的氢含水机制。2。通过一系列位于原位的小打孔测试和PCT测量值（Sievert的方法）确定了钯涂层的niobium膜的延性脆性过渡的覆盖范围。与先前报告提出的一份相比，测得的边界显示向较低的氢含量区域的转变很大。3。当降低673K时氢压力引入大约10％的晶格收缩时，将膜变形并易于骨折，在该氢压力下，脱氢反应顺利进行。4。尽管在实用的氢压力条件下，纯niobium会溶解大量的氢并引起显着的封闭，但溶解氢浓度的降低可以控制证实的氢含水。5。计划的合金设计计划以在膜的两侧获得高氢浓度差异，可以成为一种新的Niobium膜，既具有氢的通透性又具有强烈的抗性抗氢化。例如，当将钯添加到niobium中时，溶解氢的量减少，钯的添加有助于给予对氢的耐药6。目前的结果将为我们提供针对氢含水的尼伯群渗透性膜设计的线索。

项目成果

期刊论文数量（21）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Strength property evaluation of pure niobium hydrogen permeable membrane by in-situ SP test

原位SP试验评价纯铌透氢膜的强度性能

DOI：
发表时间：
2006
期刊：
Collected Abstracts of the 2006 JIM and ISIJ Kyushu Affiliate Joint Meeting(in Japanese) (151)
影响因子：
0
作者：
Kazuyuki Shimizu;Shohei Sato;Tomonori Nambu;Hiroshi Yukawa;Yoshihisa Matsumoto
通讯作者：
Yoshihisa Matsumoto

Development of hydrogen permeation in-situ small punch test equipment and quantitative evaluation on the hydrogen embrittlement of pure niobium membrane

氢渗透原位小冲测试设备研制及纯铌膜氢脆定量评价

DOI：
发表时间：
2006
期刊：
Collected Abstracts of the 2006 Autumn Meeting of The Japan Institute of Metals(in Japanese) (82)
影响因子：
0
作者：
Kazuyuki Shimizu;Shohei Sato;Yoshihisa Matsumoto;Tomonori Nambu;Rong Rong;Naoshi Watanabe;Hiroshi Yukawa;Masahiko Morinaga
通讯作者：
Masahiko Morinaga

in-situ SP試験による純Nb水素透過膜の強度特性評価

原位SP试验评价纯铌透氢膜强度特性