發(fā)布時間：2018-12-13 17:52

【摘要】：利用化學鍍在YL113鋁合金表面制備了非晶態(tài)Ni-P鍍層,通過SEM、EDS和XRD等手段表征了其在不同溫度下晶化處理后表面形貌、化學元素含量和物相組成。分析了晶化處理溫度對鍍層硬度的影響,并用HSR-2M型往復摩擦磨損試驗機考察了Ni-P鍍層磨損機制。結(jié)果表明,當晶化處理溫度升高時,鍍層晶粒尺寸逐漸增大,鍍層中形成了以Ni為主的化合物,在350℃時硬度最高;350以后,如果晶化溫度繼續(xù)升高,晶粒尺寸增大,表現(xiàn)出以Ni的衍射峰強度增加的反霍佩琪效應;隨晶化處理溫度升高,鍍層摩擦系數(shù)先增大后減小,在350℃時摩擦系數(shù)最小,磨損性能最好。晶化處理溫度低于350℃、在350℃、高于350℃時的磨損機制分別為磨粒磨損、粘著磨損+磨粒磨損、粘著磨損。
[Abstract]:Amorphous Ni-P coating was prepared on the surface of YL113 aluminum alloy by electroless plating. The surface morphology, chemical element content and phase composition were characterized by means of SEM,EDS and XRD. The effect of crystallization temperature on coating hardness was analyzed and the wear mechanism of Ni-P coating was investigated by HSR-2M reciprocating friction and wear tester. The results show that when the crystallization temperature increases, the grain size of the coating increases gradually, and the Ni compounds are formed in the coating, and the hardness is the highest at 350 鈩，

本文編號：2376962