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New Approach for Macro Porous RB-SiC Derived from SiC/Novolac-type Phenolic Composite
【文件类型】 【消费金额】1.5 【文章页数】5 【会员操作】  
【文章作者】Shimamura, Akihiro;Fukushima, Manabu;Hotta, Mikinori;Ohji, Tatsuki;Kondo, Naoki
【文章摘要】      A novel fabrication route to make macroporous silicon carbide (SiC) has been proposed in this study. The route is composed of the following two steps: the fabrication of porous -SiC/novolac-type phenolic composite using hexamethylenetetramine (HMT) as a curing/blowing agent for the novolac monomer and a conventional reaction-bonded (RB) sintering of the composite. The -SiC/novolac-type phenolic composite was carbonized at 800 degrees C for 2 h in N-2 gas and then reacted with the molten silicon at 1450 degrees C for 30 min under vacuum, resulting in the macroporous RB-SiC with an open porosity of 48% and relatively large pore size of similar to 110 m. The compressive strength of the macroporous RB-SiC was 113 MPa, which is relatively high compared to those reported for macroporous SiC of equivalent porosities and pore sizes.
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【卷】99 【ISSUE】2 【ISSUEID】815B0005     【文章期份】2016    【发布日期】2016/8/11 17:03:29    点击率:0    打印    关闭
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