CW101C CuBe2铜合金冲压铜带
LM’s comparison list between different
norms from Copper alloys
Please read below on the wished for trade-name in the left hand column, and get it translated into LM-language on the right-hand
column. The right hand column with our name is either identical in composition or a fully replaceable alloy with only minor differences.
The column in the middle states the norm and its country of origin.
With no marks in front of LM’s alloy = alloy is identical, with this sign “~” = alloy is very similar, fully replaceable.
Product name Country of origin LM’s trade name by or order/inquiry
Cu Sn6 German standard / DIN 17662, Zinnbronzen Cu Sn6, CW452K
电化学腐蚀性能
通过未合金化和锆微合金化锰黄铜在室温3.5%NaCl 溶液中的动电位很化曲线。以及自腐蚀电位、腐蚀电流密度和腐蚀速率数值。可以看出,二者都发生了钝化,但是锆微合金化锰黄铜的钝化电流密度更大。可以看出,锆微合金化锰黄铜的自腐蚀电位比未微合金化的高,说明前者的腐蚀倾向更低。可能是由于锰黄铜中的κ 相(富铁相)发生了剥落,留下了自腐蚀电位较正的α 相即富铜相,在锆微合金化锰黄铜中的α相更细,数量更多,从而使自腐蚀电位发生了正移。
采用传统Tafel 拟合计算得出腐蚀速率。与未微合金化的锰黄铜相比,锆微合金化的锰黄铜腐蚀速率降低了74.5%,说明其电化学耐蚀性更好。
摩擦磨损性能
通过锰黄铜在室温下的湿摩擦系数随磨损时间变化曲线可以看出,未合金化和锆微合金化的湿摩擦系数变动幅度均较小,都有较优的耐磨性能。但是锆微合金化的锰黄铜具有更低的平均摩擦系数(0.0254),与未合金化的锰黄铜(0.0315)相比降低了19.3%。
通过锰黄铜的磨痕形貌可以看出,摩擦后的表面特征有如下几点:
①沿滑动方向上存在着明显的犁沟,犁沟深且多;