방전 플라즈마 소결과 압축 성형 방법으로 제조된 알루미늄 다공체의구조적, 기계적 특성 연구 (Investigation on the Structural and Mechanical Properties of Al Foam Manufactured by Spark Plasma Sintering and Compression Molding Methods)

서지정보

· 발행기관 : 대한금속·재료학회
· 수록지 정보 : 대한금속·재료학회지 / 62권 / 7호 / 533 ~ 541페이지
· 저자명 : 최승혁, 이상화, 정재길, 이석재, 안태영, 최유송, 손승배

초록

Metal foam materials are used for various purposes including electrode materials, catalyst filters,and gas diffusion filters due to their porous structure. Increasing demand for metal foams has generatedresearch to increase porosity as well as produce different pore sizes. The present paper illustrates acomparison of open-cell aluminum foams prepared using the space holder technique. The Al foams werefabricated by two different methods: spark plasma sintering (SPS) and the compression molding (CM) method.
The effect of the content of sodium chloride particles, used as the space holder, as well as manufacturingtechnologies on the Al foam structure and their mechanical properties were investigated. The morphology andstructure of the obtained Al foams were analyzed by scanning electron microscopy (SEM) and micro-computedtomography (CT). Compressive testing was performed to investigate mechanical properties. The porosity ofthe SPS Al foam sample was 61-74%, and was 60-72% for the CM sample. The compressive strength andYoung’s modulus were 1.40 MPa, 1.41×10-2 GPa for the SPS sample and 0.9 MPa, 1.33×10-2 GPa for the CMsample, respectively. The space holder technique is a promising technique for fabricating metal foammaterials for cathode current collectors in lithium-ion batteries applications.

영어초록

Metal foam materials are used for various purposes including electrode materials, catalyst filters,and gas diffusion filters due to their porous structure. Increasing demand for metal foams has generatedresearch to increase porosity as well as produce different pore sizes. The present paper illustrates acomparison of open-cell aluminum foams prepared using the space holder technique. The Al foams werefabricated by two different methods: spark plasma sintering (SPS) and the compression molding (CM) method.
The effect of the content of sodium chloride particles, used as the space holder, as well as manufacturingtechnologies on the Al foam structure and their mechanical properties were investigated. The morphology andstructure of the obtained Al foams were analyzed by scanning electron microscopy (SEM) and micro-computedtomography (CT). Compressive testing was performed to investigate mechanical properties. The porosity ofthe SPS Al foam sample was 61-74%, and was 60-72% for the CM sample. The compressive strength andYoung’s modulus were 1.40 MPa, 1.41×10-2 GPa for the SPS sample and 0.9 MPa, 1.33×10-2 GPa for the CMsample, respectively. The space holder technique is a promising technique for fabricating metal foammaterials for cathode current collectors in lithium-ion batteries applications.

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