| Ni—Al粉连续加热过程中的反应机理 |
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| 引用本文： | 王华彬,韩杰才,张幸红,杜善义. Ni—Al粉连续加热过程中的反应机理[J]. 金属学报, 1998, 34(9): 992-998 |
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| 作者姓名： | 王华彬 韩杰才 张幸红 杜善义 |
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| 作者单位： | 哈尔滨工业大学复合材料研究所!哈尔滨，150001 |
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| 摘 要： | Ｎｉ－Ａｌ粉末的差热分析和６２０℃高温金相原位移观察表明，在室温至１０００℃范围内，差热曲线存在着三个放热峰和两个吸热峰，第一放热峰系Ｎｉ和Ａｌ粉末固－固反应生成ＮｉＡｌ３所致；第二放热峰系液态共晶与Ｎｉ反应生成Ｎｉ２Ａｌ３所致；第三放热峰系统液相中的Ａｌ通过扩散与Ｎｉ反应生成Ｎｉ２Ａｌ３等放热所致；第一吸热峰对应于接触共晶熔化以及Ａｌ的熔化；第二吸热峰与ＮｉＡｌ３逆包晶反应相对应。
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| 关 键 词： | 差热分析 X射线衍射分析 NiAl合金 |
| 收稿时间： | 1998-09-18 |
| 修稿时间： | 1998-09-18 |
REACTION MECHANISM OF CONTINUALLY HEATING Ni AND A1 PARTICLES |
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| WANG Huabin,HAN Jiecai,ZHANG Xinhong,DU Shanyi Correspondent: WANG Huabin,lecturer,Tel: ,Fax:. REACTION MECHANISM OF CONTINUALLY HEATING Ni AND A1 PARTICLES[J]. Acta Metallurgica Sinica, 1998, 34(9): 992-998 |
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| Authors: | WANG Huabin HAN Jiecai ZHANG Xinhong DU Shanyi Correspondent: WANG Huabin lecturer Tel: Fax: |
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| Affiliation: | WANG Huabin,HAN Jiecai,ZHANG Xinhong,DU Shanyi (Center for Composite Materials,Harbin Institute of Technology,Harbin )Correspondent: WANG Huabin,lecturer,Tel: (),Fax: () |
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| Abstract: | There are three exothermic peaks and two endothermic peaks in Ni-Al differential thermal analysis (DTA) curves. Three exothermic peaks are respectively attributed to NiAl3 formation by solid-solid diffusion of Ni and Al power, Ni2Al3 formation by liquid eutectic spreading on the surface of Ni power, and Ni2Al3 and NiAl formation by diffusion. Two endothermic peaks are respectively caused by primary eutectic contact melting and later A1 melting, and anti-peritectic reaction of NiAl3. |
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| Keywords: | differential thermal analysis X-ray diffraction analysis intermetallic com pound of Ni-Al system |
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