以化學合成法製備錫基金屬奈米粉末並探討不同保護劑對奈米粉末的保護機制

Synthesis of Tin-based Nanoparticles by Chemical Reduction Method and the Protective Mechanism of Protective Agent

黃柏竣(Po-Chun Huang)

指導教授 ： 杜正恭

國立清華大學/工學院/材料科學工程學系/碩士(2008年)

https://doi.org/10.6843/NTHU.2008.00499

摘要

Unique chemical, optical and physical properties of metallic nanoparticles can be derived due to the high surface ratio as compared with bulk value. With these unusual properties, many applications of nanotechnology have been investigated in the recent years. In this study, the application of solders in electric package was investigated. Chemical reduction method was applied to synthesize tin-based nanoparticles. In an immediate fabrication method, tin-based nanoparticles were synthesized in different experimental parameters. The morphology observation of these tin-based nanoparticles was characterized by transmission electron microscopy (TEM) and field emission microscopy (FE-SEM). The size of nanoparticles was between several nanometer to hundreds nanometer with various conditions. The phase of different particle size was also identified by X-ray diffractometer (XRD). The thermal behaviors of tin-based nanoparticles with various compositions were investigated using differential scanning calorimeter (DSC). No other endothermic peaks were found in the DSC profile, implying the complete melting of Sn-Cu-xBi nanoparticles below 240oC for the reflow temperature.

In an improved fabrication method, tin nanoparticles with different surfactant type and concentration were synthesized by chemical reduction method. Three kinds of protection agent were used. Various morphologies were observed using different types of protective agent. The correlations between nanoparticle morphology and protective agent were revealed by FTIR results. Proposed mechanisms of each protective agent were also discussed. In final part, the phase and the melting behavior of tin nanoparticles synthesized by improved fabrication method were identified by XRD and DSC analysis. The wetting properties of tin nanosolder were also discussed in the final part.

關鍵字

奈米 ； 無鉛銲錫 ； 化學合成

並列摘要

無資料

並列關鍵字

HASH(0x1c218340) ； HASH(0x1c2183e0) ； HASH(0x1c218480)

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