激光加热温度对冷喷Stellite 6合金沉积层表面特性的影响

doi:10.3969/j.issn.1000-1093.2012.07.014

兵工学报 ›› 2012, Vol. 33 ›› Issue (7): 840-846.doi: 10.3969/j.issn.1000-1093.2012.07.014

激光加热温度对冷喷Stellite 6合金沉积层表面特性的影响

骆芳^1,3, 孔凡志³, 威廉·欧尼尔²，姚建华³, 柴国钟³

（1.浙江工业大学之江学院，浙江杭州 310024; 2.剑桥大学工程系制造研究院, 英国剑桥 CB3 OFS；3.浙江工业大学机械工程学院，浙江杭州 310012)

收稿日期:2011-01-10 修回日期:2011-01-10 上线日期:2017-02-28
作者简介:骆芳(1966—)女副教授
基金资助:
英国剑桥大学工程系应用光学中心赞助项目；浙江省自然科学基金项目（Y4110594）；国家国际科技合作项目（KM-JD-2011010）；浙江省重点科技创新团队项目(2012R10002-08)

Effect of Laser Heating Temperature on Coating Characteristics of Stellite 6 Deposited by Cold Spray

LUO Fang^1,3, KONG Fan-zhi₃, William O’NEIL₂, YAO Jian-hua₃, CHAI Guo-zhong₃

(1.College of Zhijiang, Zhejiang University of Technology, Hangzhou 310024, Zhejiang, China;2.Institute for Manufacturing, Department of Engineering, University of Cambridge, CB3 OFS, UK;3.College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310012, Zhejiang, China)

Received:2011-01-10 Revised:2011-01-10 Online:2017-02-28

摘要/Abstract

摘要： 激光辅助冷喷涂(LCS)工艺是一种新的涂层和制造工艺，它结合了冷喷涂的固态沉积、保持原有粉末成分、高沉积效率优势，能够沉积冷喷涂难以或不可能沉积的材料。以N₂气作为高压载气，在中碳钢基体材料上采用LCS沉积Stellite 6粉末颗粒。采用金相、SEM以及EDX对沉积层进行表征，分析了激光加热的沉积点温度和N₂温度对沉积层的表面形貌、沉积厚度和沉积密度的影响。结果表明：激光加热导致的沉积点温度越高，沉积表面起伏越大，颗粒撞击形成的凹陷越深，粉末沉积层越厚；沉积层的致密度与沉积点温度和N₂温度有关。在氮气压力3 MPa，工件进给速度为15 mm/s的条件下，氮气温度450 ℃，沉积点温度1 100 ℃时，沉积层质量最好。

关键词: 材料表面与界面, 中碳钢, 激光辅助冷喷, stellite 6, 沉积层

Abstract: Laser-assisted cold spray (LCS) is a new coating and fabrication process which combines some advantages of CS: solid-state deposition, retain their initial composition and high build rate with the ability to deposit materials which are either difficult or impossible to deposit using cold spray alone. Stellite 6 powder is deposited on medium carbon steels by LCS using N₂ as carrier gas pressure. The topography, cross section thickness, structure of the coatings is examined by SEM, optical microscopy, EDX. The results show that thickness and fluctuation of coating are improved with increased deposition site temperature. Porosity of coating is affected by N₂ and deposition site temperature. In this paper, it presents optimal coating using N₂ at a pressure of 3 MPa and temperature of 450 ℃ and deposition site temperature of 1 100 ℃.

Key words: surface and interface of materials, medium carbon steel, laser- assisted cold spray, Stellite 6, deposited coating

中图分类号:

TG174.4

骆芳, 孔凡志, 威廉·欧尼尔，姚建华, 柴国钟. 激光加热温度对冷喷Stellite 6合金沉积层表面特性的影响[J]. 兵工学报, 2012, 33(7): 840-846.

LUO Fang, KONG Fan-zhi₃, William O’NEIL₂, YAO Jian-hua₃, CHAI Guo-zhong₃. Effect of Laser Heating Temperature on Coating Characteristics of Stellite 6 Deposited by Cold Spray[J]. Acta Armamentarii, 2012, 33(7): 840-846.

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激光加热温度对冷喷Stellite 6合金沉积层表面特性的影响

Effect of Laser Heating Temperature on Coating Characteristics of Stellite 6 Deposited by Cold Spray

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