Mierostruetures and Dry Sliding Wear Properties of ZrB2/A356 Composites Synthesized by Magneto-chemistry in situ Reaction

• Published in: 武汉理工大学学报：材料科学英文版 no. 2; pp. 384 - 388
• Main Author: CHEN Dengbin ZHAO Yutao ZHU Haiyan CHEN Gang
• Format: Journal Article
• Language: English
• Published: 2013
• Subjects: A356合金; 化学合成; 原位制备; 原位反应; 复合材料; 滑动磨损性能; 粘着磨损; 颗粒体积分数
• ISSN: 1000-2413; 1993-0437
• DOI: 10.1007/s11595-013-0700-y

In situ A356-x%PVF （particle volume fraction） ZrB2 （ x=1, 3, 5） composites were prepared via magneto-chemistry in situ reaction and the dry sliding wear properties of the composites were investigated. The experimental results show that ZrB2 reinforcement particle is obtained and its morphology mainly present in spherical and regular hexagon. Wear test results show that the values of wear weight loss of the composites decrease with the increase of value under a given sliding time and a certain load of 60 N. Especially, when x=5, the weight loss of the as-prepared composite is 43.1 mg, which is only 36.4% to that ofA356 alloy, 118 rag. The wear mechanism is changed from adhesion wear to adhesion wear and abrasive wear and then to abrasive wear with the increase of x value.