使用銀基塡料硬銲接合鈹銅及304不銹鋼之研究

The Study of Brazing Beryllium Copper and 304 Stainless Steel Using a Silver Base Braze Filler

陳瑞斌(R. B. Chen) ； 薛人愷(R. K. Shiue) ； 張吉本(C. B. Chang)

《材料科學與工程》 33卷3期 (2001/09) Pp. 143-151

https://doi.org/10.6409/JMSE.200109.0143

摘要

硬銲接合304不銹鋼可以使用BNi-1a、Bag-3及Bag-24等三種塡充合金。其中BNi-1a爲鎳基塡充合金，因其硬銲溫度高達1100℃，故在此溫度下將無法進行鈹銅之硬銲。而Bag-3和Bag-24這兩種塡充合金雖然有較低的硬銲溫度，但是合金中的化學組成內含有Zn和Cd。這兩種元素在硬銲的高溫下存在較高的蒸汽壓，容易造成塡料在眞空硬銲製程中發生化學組成的偏離，故而在眞空硬銲製程中不易穩定控制合金的成份。本研究選用一種商用銀基塡料內含銅、錫和錳之Braze 580塡充合金進行眞空硬銲。經由動態潤濕角觀測中證實，Braze 580塡料對於304不銹鋼及鈹銅合金這兩種基材均能有效潤濕。再經由接合界面顯微組織及化學成份的分析中，可以得知使用Braze 580塡充合金於硬銲接合後，不管是接合界面或是塡充合金區域內皆不易生成介金屬化合物。故使用Braze 580塡料來接合304不銹鋼與鈹銅時，不僅能夠在較低的硬銲溫度下進行接合，且此塡料之潤濕性亦將滿足接合之所需。

關鍵字

硬銲 ； 鈹銅 ； 304不銹鋼 ； 銀基塡料 ； 潤濕

並列摘要

BNi-1a, BAg-3 and BAg-24 braze alloys can be used in brazing 304 stainless steel. Whereas BNi-1a is a nickel-base braze alloy with brazing temperature at 1l00℃. BAg-3 and BAg-24 braze alloys have lower brazing temperatures, but these alloys containing Zn and Cd have high vapor pressure during vacuum brazing. Both elements with high vapor pressure result in deviation of its chemical composition during vacuum brazing, so the controlling of filler metal composition during brazing is difficult. Braze 580, a commercially available silver-base filler containing Cu, Sn and Mn, was used in vacuum brazing of 304 stainless steel and beryllium copper in this study. Based on the dynamic wetting angle observations, Braze 580 can effectively wet both 304 stainless steel and beryllium copper substrates. No intermetallic compounds were found in both the bonding interface and filler alloy after brazing. The use of Braze 580 filler in joining 304 stainless steel can be performed at a lower temperature, and its wetting ability satisfies the requirement of joining.

並列關鍵字

Brazing ； Beryllium copper ； 304 stainless steel ； Silver base filler ； Wetting