Development of Fabrication method for metallic closed cellular materials containing ceramics.

1)放电等离子烧结(SPS)法制备含陶瓷的金属闭孔材料。采用化学镀的方法在陶瓷颗粒表面涂覆一层镍磷合金层，填充到石墨模具中，采用放电等离子烧结法进行烧结。2)采用化学镀镍磷合金涂层的多孔陶瓷颗粒制备金属封闭多孔陶瓷颗粒，采用化学镀镍磷合金涂层的多孔陶瓷颗粒压制成颗粒(绿色颗粒)，在真空条件下高温烧结。这些颗粒还用放电等离子烧结法进行了烧结。用这两种方法制备含陶瓷的金属封闭多孔材料。3)封闭多孔材料的评价通过压缩试验和三点弯曲试验测试材料的力学性能。压缩试验结果表明，这些金属封闭式多孔材料为脆性材料，不存在长平台区。三点弯曲试验结果表明，不同壁厚、不同材料的试件具有不同的最大抗拉强度。4)小试件制作采用石墨模和冲头，采用放电等离子烧结法制备了厚度为1~3 mm的含陶瓷的10×20 mm金属封闭式多孔材料试件。

A fabrication method of a metallic closed cellular material containing ceramics has been developed.1)A fabrication method of a metallic closed cellular material containing ceramics by Spark Plasma Sintering (SPS) Method.Ceramics particles were coated with nickel-phosphorus alloy layer using electro-less plating were filled into the graphite die and sintered by a spark plasma sintering method. Then metallic closed cellular materials containing ceramics were fabricated.2)A fabrication method of a metallic closed cellular material containing ceramics using porous ceramics particles coated with nickel-phosphorusPorous ceramics particles coated with nickel-phosphorus alloy layer using electro-less plating were pressed into pellets (green pellets) and sintered at high temperatures in a vacuum condition. These particles were also sintered by a spark plasma sintering method. Metallic closed cellular materials containing ceramics were then fabricated by both methods.3)Evaluation of closed cellular materialsThe compressive tests and the three points bending tests were carried out to measure the mechanical properties of these materials. The compressive test results showed that these metallic closed cellular materials were brittle and do not have long plateau region. The results of three points bending tests showed that the specimens which have different thickness of cell wall and include different materials have different maximum tensile strengths.4)Fabrication of small devicesUsing graphite dies and punches, 10x20mm specimen of metallic closed cellular materials containing ceramics with the thickness of 1-3mm could be fabricated by spark plasma sintering method.