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Nb／Al2O3釬焊界面的網(wǎng)狀分割效應(yīng)
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Dividing Effect of a Net Interface in the Nb/Al 2O 3 Interface
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    摘要:

    首次研究了在Ａｌ２Ｏ３陶瓷與金屬Ｎｂ的釬焊面之間加入一層金屬Ｍｏ網(wǎng)，可大幅度提高接頭的焊接強(qiáng)度，經(jīng)用Ｎｉ５１Ｔｉ４９和Ｃｕ５２Ｎｉ１８Ｔｉ３０兩種釬料焊接，焊后強(qiáng)度均提高５０％以上，斷裂特征由陶瓷中的大塊破損轉(zhuǎn)變?yōu)檠亟缑娴幕旌闲蛿嗔?。金屬網(wǎng)的加入對(duì)釬料凝固收縮應(yīng)力產(chǎn)生了分割相消的作用，從而有效降低了焊接接頭的殘余應(yīng)力。

    Abstract:

    The effect of a molybdenum net interlayer in the interface between Al 2O 3 and Nb on the shear strength of the brazed joint is investigated. The existence of the net in Al 2O 3/Nb brazed interface could greatly increase the shear strength of the brazed joint. As compared with the fracture of stripped off large pieces of ceramics from the interface of those brazed joints without the molybdenum net interlayer, the fracture of brazed joints with the molybdenum net interlayer changes into a mixed type of fracture occured along the interface. A dividing effect of the net during solidification contraction of the interface greatly decreases the residual stress in the brazed joint. The improvement in the fracture behavior of the brazed joint with molybdenum net interlayer is caused by the dividing effect.

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朱定一 金志浩. Nb／Al2O3釬焊界面的網(wǎng)狀分割效應(yīng)[J].稀有金屬材料與工程,1999,(1):38~40.[Zhu Dingyi, Jin Zhihao, Wang Yonglan. Dividing Effect of a Net Interface in the Nb/Al 2O 3 Interface[J]. Rare Metal Materials and Engineering,1999,(1):38~40.]
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