Process Development of D–Gun Sprayed NiCrAl Coating for Dimensional Build-Up

WANG Bo; LIU Yang; SHAO Jianwei; PENG Xin; YUAN Fuhe

doi:10.16080/j.issn1671-833x.2023.01/02.067

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Process Development of D–Gun Sprayed NiCrAl Coating for Dimensional Build-Up

更新时间：2025-10-30

- Process Development of D–Gun Sprayed NiCrAl Coating for Dimensional Build-Up
- Aeronautical Manufacturing Technology Vol. 66, Issue 1/2, (2023)
- 作者机构：
  
  1. 北京航空航天大学,北京,100191
  2. 中国航发沈阳黎明航空发动机有限责任公司,沈阳,110043
  3. 鲁迅美术学院,沈阳,110004
  4. 空装驻沈阳地区第二军事代表室,沈阳,110042
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671-833x.2023.01/02.067
  CLC：
- Published：2023
- 稿件说明：
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王博，刘洋，邵建伟，彭新，袁福河. 一种爆炸喷涂NiCrAl 尺寸修复涂层的工艺研制[J]. 航空制造技术, 2023, 66(1/2): 67-73. WANG Bo, LIU Yang, SHAO Jianwei, PENG Xin, YUAN Fuhe. Process Development of D–Gun Sprayed NiCrAl Coating for Dimensional Build-Up[J]. Aeronautical Manufacturing Technology, 2023, 66(1/2): 67-73.

WANG Bo, LIU Yang, SHAO Jianwei, et al. Process Development of D–Gun Sprayed NiCrAl Coating for Dimensional Build-Up[J]. Aeronautical Manufacturing Technology, 2023, 66(1/2).
王博，刘洋，邵建伟，彭新，袁福河. 一种爆炸喷涂NiCrAl 尺寸修复涂层的工艺研制[J]. 航空制造技术, 2023, 66(1/2): 67-73. WANG Bo, LIU Yang, SHAO Jianwei, PENG Xin, YUAN Fuhe. Process Development of D–Gun Sprayed NiCrAl Coating for Dimensional Build-Up[J]. Aeronautical Manufacturing Technology, 2023, 66(1/2): 67-73. DOI： 10.16080/j.issn1671-833x.2023.01/02.067.

WANG Bo, LIU Yang, SHAO Jianwei, et al. Process Development of D–Gun Sprayed NiCrAl Coating for Dimensional Build-Up[J]. Aeronautical Manufacturing Technology, 2023, 66(1/2). DOI： 10.16080/j.issn1671-833x.2023.01/02.067.

摘要

采用正交试验设计方法，研究了粉末粒度、氧燃比、送粉氮气流量和喷涂距离4 因素对爆炸喷涂NiCrAl 涂层组织和性能的影响，并利用扫描电镜对涂层微观组织进行了研究，通过对涂层孔隙率、显微硬度和拉伸结合强度的检测，研究了4 因素对涂层性能影响的规律。根据正交试验结果，确定优化后的工艺参数为粉末粒度13~45 μm，氧燃比为1.25，送粉氮气流量20 L/min，喷涂距离170 mm。优化工艺后喷涂的NiCrAl 涂层组织均匀致密、硬度高、拉伸结合强度好。

Abstract

Based on the orthogonal experiment

effects of power particle size

oxygen-fuel ratio

flow rate of carrier N

and spray distance on microscopic structure and mechanical properties of D–gun sprayed NiCrAl coatings were investigated. The characterizations of microstructure of as-sprayed coatings were analyzed by SEM. The influence of four factors on the coating properties was studied by testing the porosity

microhardness and tensile bonding strength of the coating. The optimized process parameters of the D–gun sprayed NiCrAl coatings were particle size 13–45 μm

oxygenfuel ratio 1.25

flow rate of carrier N

20 L/min and spray distance 170 mm. An NiCrAl coating for dimensional build-up application with uniform

dense microstructure

high hardness and adhesive strength was achieved through the D–gun spray process optimization.

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