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活化鉬-錳法連接高純Al2O3陶瓷／不銹鋼
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TB756

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國家“973”重大基礎(chǔ)研究計(jì)劃（2006CB601200）資助項(xiàng)目


Joining of High Purity Al2O3 to Stainless Steel by Activated Molybdenum-Manganese Process
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    摘要:

    采用活化鉬-錳路線，使用72Ag28Cu（質(zhì)量分?jǐn)?shù)，下同）釬焊制備了高純Al2O3陶瓷／不銹鋼接頭。利用SEM對(duì)金屬化陶瓷的顯微結(jié)構(gòu)、元素分布進(jìn)行了分析，并討論活化鉬-錳法的金屬化機(jī)理。考察了金屬化工藝、鍍鎳及鍍后熱處理對(duì)接頭剪切強(qiáng)度和釬焊效果的影響。結(jié)果表明：玻璃相遷移和化學(xué)反應(yīng)對(duì)活化Mo-Mn金屬化起主要作用，金屬化層燒結(jié)起輔助作用，且玻璃相遷移主要為由金屬化層向陶瓷體方向。在最優(yōu)工藝條件下，接頭最大剪切強(qiáng)度達(dá)115 MPa，平均強(qiáng)度高于97MPa。薄的鍍鎳層有助于焊料浸濕金屬化層和阻止焊料腐蝕金屬化層。鍍后熱處理也可顯著提高接頭強(qiáng)度。

    Abstract:

    High purity alumina/stainless steel joints were produced by activated molybdenum -manganese route using 72Ag28Cu solder. The microstructure and elemental distribution of metallized ceramic were analyzed, and the mechanism of metallization was discussed. Influences of the metallizing technologic conditions, Ni plating and subsequent annealing on the joint shear strength were investigated. The results show that both glassy phases migration and chemical reaction act the key roles for activated Mo-Mn metallizing, but sintering of the metallized layer acts the secondary role, and the main direction of glass migration is from the metallzed layer to the ceramic matrix. The maximum of the joint shear strength under the optimized conditions reaches 115 MPa, and the average strength is over 97 MPa. A thin Ni coating will prevent the metallized layer from being wetted by the solder in resulting avoiding the erosion of the layer by the solder. The annealing after plating could improve markedly the strength of the ioints.

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劉桂武 喬冠軍 王紅潔 金志浩 盧天健.活化鉬-錳法連接高純Al2O3陶瓷／不銹鋼[J].稀有金屬材料與工程,2007,36(5):920~923.[Liu Guiwu, Qiao Guanjun, Wang Hongjie, Jin Zhihao, Lu Tianjian. Joining of High Purity Al2O3 to Stainless Steel by Activated Molybdenum-Manganese Process[J]. Rare Metal Materials and Engineering,2007,36(5):920~923.]
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  • 最后修改日期:2006-09-06
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