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采用立式万能销盘腐蚀磨损试验机研究AISI 316不锈钢和Ti6Al4V合金在海水中与Al2O3陶瓷对磨时的腐蚀与腐蚀磨损行为,重点讨论腐蚀磨损之间的交互作用。结果表明,摩擦作用使得Ti6Al4V合金和316不锈钢的开路电位大幅下降,腐蚀磨损过程中的电流密度远高于静态腐蚀时的电流密度,摩擦明显促进了合金的腐蚀。两种合金在海水中的磨损量远大于在纯水中的磨损量,腐蚀促进了磨损,并且Ti6Al4V合金的耐磨性优于316不锈钢的耐磨性,腐蚀磨损之间的交互作用是材料损失的一个重要因素。本实验所用的摩擦装置为单向滑动的面面接触方式,这使得摩擦对腐蚀的促进作用在总磨损量中所占的比例很小。
The corrosion and corrosion wear behaviors of AISI 316 stainless steel and Ti6Al4V alloy on seawater with Al2O3 ceramic were studied by vertical universal pin-plate erosion tester. The interaction between corrosion and wear was mainly discussed. The results show that the frictional force causes the open circuit potentials of Ti6Al4V alloy and 316 stainless steel to decrease sharply. The current density during corrosion and abrasion is much higher than the current density during static corrosion. The friction promotes the corrosion of the alloy obviously. The wear of both alloys in seawater is far greater than that in pure water, corrosion promotes wear, and the wear resistance of Ti6Al4V alloy is better than the wear resistance of 316 stainless steel. The interaction between corrosion and wear is material loss An important factor. The friction device used in this experiment is a one-way sliding surface contact method, which makes the role of friction on the promotion of corrosion in a small proportion of the total wear.