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粉末冶金材料科学与工程  2019, Vol. 24 Issue (3): 261-266    
  工艺技术 本期目录 | 过刊浏览 | 高级检索 |
氧燃比对爆炸喷涂铁基非晶涂层结构和摩擦磨损性能的影响
解路, 熊翔, 王跃明
中南大学 粉末冶金国家重点实验室,长沙 410083
Effects of oxygen fuel rate on microstructure and wear properties of detonation sprayed iron-based amorphous coatings
XIE Lu, XIONG Xiang, WANG Yueming
State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
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摘要 采用爆炸喷涂技术,在不同氧燃比(氧气流量m3/h与乙炔流量m3/h的比例)的条件下制备铁基非晶涂层,研究关键工艺参数-氧燃比对涂层结构和摩擦磨损性能的影响。探讨硬度和孔隙率对涂层耐磨性能的影响。结果表明,在氧燃比为1.0:1.0,1.2:1.0,1.5:1.0的条件下,涂层非晶含量分别为89.73%,86.23%和81.46%,涂层孔隙率分别为2.1%,1.4%和0.8%,涂层耐磨性能是不锈钢基体的四倍以上。氧燃比为1.2:1.0时,制备出的涂层耐磨性能最好。适中硬度和孔隙率的非晶涂层的耐磨性能最好,且硬度对耐磨性能的影响比孔隙率大。
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解路
熊翔
王跃明
关键词 爆炸喷涂铁基非晶涂层氧燃比摩擦磨损性能    
Abstract:The Fe-based amorphous coatings were prepared by detonation spray at various oxygen fuel rates (oxygen flow m3/h to acetylene flow m3/h ratio). The effects of oxygen fuel rate on coating microstructure and wear properties were examined. The effects of microhardness and porosity on the wear properties are also studied. The results show, the amorphous phase contents of coatings were calculated to be 89.73%, 86.23% and 81.46%, respectively, which were higher than those fabricated by other thermal spray techniques. The porosity was tested to be 2.1%, 1.4% and 0.8%, respectively. The wear resistance of Fe-based amorphous coatings was four times better than the stainless steel substrate. The oxygen fuel rate of 1.2:1.0 was proved to be the optimal parameter of fabricating Fe-based amorphous coating. Amorphous coatings with moderate hardness and porosity have the best wear resistance, and the effect of hardness on wear resistance is greater than that of porosity.
Key wordsdetonation spray    iron-based amorphous coating    oxygen fuel rate    wear properties
收稿日期: 2018-12-02      出版日期: 2019-07-11
ZTFLH:  TG139+.8  
通讯作者: 熊翔,教授,博士。电话:0731-88836079;E-mail: xiongx@csu.edu.cn   
引用本文:   
解路, 熊翔, 王跃明. 氧燃比对爆炸喷涂铁基非晶涂层结构和摩擦磨损性能的影响[J]. 粉末冶金材料科学与工程, 2019, 24(3): 261-266.
XIE Lu, XIONG Xiang, WANG Yueming. Effects of oxygen fuel rate on microstructure and wear properties of detonation sprayed iron-based amorphous coatings. Materials Science and Engineering of Powder Metallurgy, 2019, 24(3): 261-266.
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