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氧燃比对爆炸喷涂WC-17Co涂层组织和性能的影响 被引量：5

Effect of Ratio of Oxygen and Fuel on Microstructure Performance of WC-17Co Coating Deposition with Denotation Gun Spray Process
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摘要 选用WC-17Co喷涂粉末,采用爆炸喷涂工艺,通过改变乙炔和氧气流量等喷涂参数在316L钢基体上制备了4种WC/Co涂层。采用X衍射仪、扫描电镜对对涂层的相结构和微观组织进行了研究;采用灰度法测试了涂层的气孔率;采用拉伸法测试了涂层的结合强度;采用小负荷维氏硬度计测试了开裂韧性;最后采用湿砂橡胶轮磨粒磨损试验机对各涂层磨粒磨损行为进行了研究。结果显示:随着氧燃比的增加,涂层中的WC分解程度增加,涂层的硬度增加,韧性、气孔率和抗磨粒磨损性能都是先增加后降低。氧燃比为1.5时,涂层具有最优的综合力学性能。 Four kinds of WC-17Co coatings were deposited on 316L stainless steel with various ratio of oxygen and fuel （O/F） by denotation gun spraying. The structure of the feedstock powder and the coatings were analyzed by XRD. The characterizations of spraying feedstock powder and microstructure of as-sprayed coatings were analyzed by SEM. The hardness, porosity, fracture toughness and abrasive wear resistance were evaluated. The results show that the hardness increases, while fracture toughness, porosity and abrasive wear resistance increase first and then decrease with the increase of ratio of oxygen a nd fuel. The best value of ratio of oxygen and fuel is 1.5 for depositing the WC-17Co coating by denotation-gun spray process.
作者 张锤 柏洪武 王群 向晶
机构地区 湖南大学材料科学与工程学院 重庆工业职业技术学院
出处 《热加工工艺》 CSCD 北大核心 2013年第4期145-148,共4页 Hot Working Technology
基金 中央高校基本科研业务费项目(531107040184) 湖南大学青年教师成长计划项目(531107021145)
关键词 爆炸喷涂 WC-CO 涂层 开裂韧性 磨损 denotation-gun spray WC-Co coating fi＇acture toughness wear
分类号 TG174.442 [金属学及工艺—金属表面处理]
  • 相关文献

参考文献9

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共引文献24

同被引文献40

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引证文献5

二级引证文献23

热加工工艺
2013年 第4期

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