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利用金屬間化合物增強(qiáng)陶瓷釬焊接頭
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TG454

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國(guó)家自然科學(xué)基金資助(50075046)


Reinforcement of Ceramic Bonded Joints with Intermetallic Compounds
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    摘要:

    采用釬焊的方法連接Si3N4陶瓷,在Ag-Cu-Ti釬料中添加鎳,鈦元素,在釬焊的同時(shí),使釬縫中進(jìn)行原位反應(yīng),生成金屬間化合物增強(qiáng)釬縫,從而達(dá)到提高接頭強(qiáng)度的目的。對(duì)釬縫進(jìn)行X射線衍射分析結(jié)果表明,釬縫中生成了鎳鈦銅金屬間化合物。對(duì)釬縫進(jìn)行顯微組織觀察表明,生成的金屬間化合物呈顆粒狀,比較均勻地分布于釬縫中,從而對(duì)釬縫強(qiáng)度產(chǎn)生有利的影響,金屬間化合物的彌散程度,反應(yīng)連接層狀態(tài)等因素對(duì)接頭強(qiáng)度會(huì)產(chǎn)生較大影響,對(duì)界面的觀察結(jié)果表明,界面反應(yīng)層分為兩層結(jié)構(gòu),形成過(guò)程可以分為3個(gè)階段。

    Abstract:

    Si3N4 Ceramics were bonded by brazing with bonding materials composed of Ag-Cu-Ti foils and Ti/Ni/Ti multi-interlayer,which enhance the joint strength by in situ reaction occurred while brazing.Ni-Ti-Cu intermetallic compounds were observed in the joints by X-ray analysis.The intermetallic particles are homogeneously distributed in the matrix so they contribute to the joint strength.The distribution of intermetallic compounds and the status of interfacial reaction layer have obvious effect on the joint strength.The interfacial reaction layer has a two-layer structure,and the formation of which has three steps.

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張德庫(kù) 吳愛萍 鄒貴生 劉根茂.利用金屬間化合物增強(qiáng)陶瓷釬焊接頭[J].稀有金屬材料與工程,2006,35(3):423~427.[Zhang Deku, Wu Aiping, Zou Guisheng, Liu Genmao. Reinforcement of Ceramic Bonded Joints with Intermetallic Compounds[J]. Rare Metal Materials and Engineering,2006,35(3):423~427.]
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  • 收稿日期:2004-11-11
  • 最后修改日期:2005-04-18
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