【摘要】：采用電弧離子鍍技術(shù)(AIP)在YW2合金基體表面制備了TiAlN涂層,通過化學方法退除基體上的涂層,分析了硬質(zhì)合金表面退除涂層后和鍍覆涂層前成分和元素存在形態(tài)的變化。發(fā)現(xiàn)當樣品在30%H2O2、草酸鉀COOK(1.5mol·L-1)、緩蝕劑葡萄糖酸鈉GA和NaOH,VNaOH溶液∶V30%H2O2∶VCOOK溶液=1∶1∶1,45℃時,45min可以退除涂層,肉眼未觀察到基體表面受腐蝕。涂層退除后樣品表面光亮,呈現(xiàn)合金未鍍覆涂層前顏色。通過對退鍍后YW2基體和基體鍍覆涂層前的表面XPS定性及定量分析發(fā)現(xiàn),退除涂層后,基體表面W元素結(jié)合能和N元素主峰結(jié)合能與XPS結(jié)合能與參照表上對應(yīng)結(jié)合能變化很小,元素的價態(tài)沒有發(fā)生變化;鍍覆TiAlN涂層時擴散到合金淺表層的Al,Ti,N元素,造成表面Al,Ti,N元素含量較鍍覆涂層前增加,結(jié)合能位置偏移,形成AlN和TiN,有利于重新鍍覆的涂層與合金基體的結(jié)合。
[Abstract]:The TiAlN coating was prepared on the surface of YW2 alloy by arc ion plating (AIP) technique. The chemical method was used to remove the coating on the surface of cemented carbide. The changes of composition and element morphology before and after the removal of the coating on the surface of cemented carbide were analyzed. It was found that when the sample was in the range of 30H _ 2O _ 2, potassium oxalate COOK (1.5mol L-1), corrosion inhibitor sodium gluconate GA and NaOH,VNaOH solution: V30%H2O2:VCOOK solution = 1: 1: 1: 1 ~ 45 鈩，

本文編號：2370389