| 热处理对Ag-30Pd粉末相结构与形貌的影响 |
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| 引用本文： | 熊庆丰,李文琳,曹 华,霍 地,孙旭东,陈立桥.热处理对Ag-30Pd粉末相结构与形貌的影响[J].贵金属,2016,37(1):37-41. |
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| 作者姓名： | 熊庆丰 李文琳 曹 华 霍 地 孙旭东 陈立桥 |
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| 作者单位： | 1. 昆明贵金属研究所 稀贵金属综合利用新技术国家重点实验室,昆明,650106;2. 东北大学 材料各向异性与织构教育部重点实验室,沈阳,110819;3. 浙江海洋学院 创新应用研究院,浙江 舟山,316022 |
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| 基金项目： | 国家自然科学基金项目(51261008)，昆明市科技局高新技术研究与开发项目(2013-02-02-A-G-02-3040)。 |
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| 摘 要： | 研究了热处理条件对不同方法制备的Ag-30Pd粉末的相结构与形貌的影响。结果表明,采用水合肼还原制备的Ag-30Pd共沉淀粉末,在335℃下经过油酸或氮气介质中液相或固相热处理后,粉末均朝合金化结构转变;采用抗坏血酸还原制备出的银钯合金粉初始为团聚颗粒,经400~450℃氮气气氛下热处理后,颗粒发生烧结而变得密实,结晶性提高;总体上,银钯共沉淀粉在335℃,合金粉在450℃的氮气保护下保温处理4 h后,粉末致密,粒径为1~3μm,可更好地满足银钯浆料的使用要求。
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| 关 键 词： | 金属材料 银钯 粉末 热处理 相结构 形貌 |
| 收稿时间： | 2015/7/29 0:00:00 |
The Effect of Heat Treatment on Phases and Morphologies of Ag-30Pd Powders |
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| XIONG Qingfeng,LI Wenlin,CAO Hu,HUO Di,SUN Xudong and CHEN Liqiao.The Effect of Heat Treatment on Phases and Morphologies of Ag-30Pd Powders[J].Precious Metals,2016,37(1):37-41. |
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| Authors: | XIONG Qingfeng LI Wenlin CAO Hu HUO Di SUN Xudong and CHEN Liqiao |
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| Affiliation: | State Key Lab of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metal, Kunming 650106, China,State Key Lab of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metal, Kunming 650106, China,Key Laboratory for Anisotropy and Texture of Materials, Northeastern University, Shenyang 110819, China,Key Laboratory for Anisotropy and Texture of Materials, Northeastern University, Shenyang 110819, China,Key Laboratory for Anisotropy and Texture of Materials, Northeastern University, Shenyang 110819, China and Innovation & Application Research Institute, Zhejiang Ocean University, Zhoushan 316022, Zhejiang, China |
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| Abstract: | The effect of heat treatment condition on phase structures and morphologies of the Ag-30Pd powders prepared by different methods were investigated. The results show that Ag-30Pd coprecipitated powders produced by the hydrazine hydrate as reducing agent can transform to Ag-30Pd alloy by 335℃heat treatment under the condition of either oleic acid or nitrogen. The Ag-Pd alloy powders reduced by the oleic acid are composed of some agglomerated particles, and the density and crystallinity of the particles increases after heat treatment at 400~450℃. Overall, the Ag-30Pd powders with 1~3 μm particle sizes and high density after heat treatment under 335℃/4 h for coprecipitation powders, and 450℃/4 h for alloy powders can better meet the use requirements of electronic paste. |
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| Keywords: | metal materials silver-palladium powder heat treatment phase structure morphology |
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