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混粉方法對(duì)SiC_p(B_4C_p)/Al復(fù)合材料增強(qiáng)體顆粒分布均勻性的影響
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Effect of Powder Mixing Method on the Spatial Distribution of Reinforcers of the SiC p(B 4C p)/Al Composites
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    摘要:

    采用定性和定量手段系統(tǒng)比較了高能球磨法與常規(guī)混合法對(duì)ＳｉＣｐ（Ｂ４Ｃｐ）／Ａｌ復(fù)合材料增強(qiáng)體顆粒分布均勻性的影響。研究結(jié)果表明：高能球磨法能使增強(qiáng)體顆粒彌散均勻分布于基體中，是實(shí)現(xiàn)增強(qiáng)體顆粒均勻分布的最有效的方法；常規(guī)混合法制備的復(fù)合材料存在增強(qiáng)體顆粒的偏聚現(xiàn)象，顆粒偏聚程度與混粉方式和混粉時(shí)間有關(guān)，干混存在最佳混粉時(shí)間，而濕混時(shí)混合物均勻度隨混粉時(shí)間延長(zhǎng)而不斷提高。

    Abstract:

    The effects of high energy ball milling and general mixing on the spatial distribution of reinforcers of the SiC p(B 4C p)/Al composites have been investigated systematically by means of qualitative and quantitative methods. High energy ball milling, which leads to the dispersed homogeneous distribution of reinforcers in the matrix, is the most effective method for obtaining homogeneous distribution of reinforcers. There are many clusters of reinforcers in the composites fabricated by general mixing. The segregation degree of reinforcers is related to mixing medium and mixing time. The most uniform distribution of reinforcers has been obtained through long time dry blending, and for wet mixing distribution of reinforcers can be also improved when increasing the mixing time.

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樊建中,桑吉梅,張永忠,張奎,呂晉寧,張少明,石力開.混粉方法對(duì)SiC_p(B_4C_p)/Al復(fù)合材料增強(qiáng)體顆粒分布均勻性的影響[J].稀有金屬材料與工程,1999,(2).[Fan Jianzhong, Sang Jimei, Zhang Yongzhong, Zhang Kui, Lu Jingning, Zhang Shaoming, Shi Likai. Effect of Powder Mixing Method on the Spatial Distribution of Reinforcers of the SiC p(B 4C p)/Al Composites[J]. Rare Metal Materials and Engineering,1999,(2).]
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