2NiB2三元硼化物;超音速火焰噴涂;組織結(jié)構(gòu);硬度;耐腐蝕"/> 2NiB2三元硼化物，且隨著(Mo+B)/(Ni+Cr)質(zhì)量比的增加，涂層中三元硼化物含量隨之增加，涂層的硬度值增加，結(jié)合強度反而隨之降低；由于涂層中三元硼化物的原位生成，MoB/NiCr涂層的硬度值均高于316L不銹鋼基體。通過能譜和XRD分析發(fā)現(xiàn)，經(jīng)過360 h熔融鋅腐蝕試驗后，涂層表層中沒有發(fā)現(xiàn)鋅元素及其金屬間化合物，然而隨著(Mo+B)/(Ni+Cr)質(zhì)量比的增加，涂層的孔隙率增加及厚度降低。最后，綜合分析可得，相比其他涂層，(Mo+B)/(Ni+Cr)質(zhì)量比為1:1的MoB/NiCr涂層具有更好的耐熔融鋅腐蝕能力。"/>

最新色国产精品精品视频,中文字幕日韩一区二区不卡,亚洲有码转帖,夜夜躁日日躁狠狠久久av,中国凸偷窥xxxx自由视频

+高級檢索
不同(Mo+B)/(Ni+Cr)質(zhì)量比的原位合成MoB/NiCr涂層的組織結(jié)構(gòu)與性能
作者:
作者單位:

1.新余學(xué)院 新余市智能制造材料技術(shù)與應(yīng)用重點實驗室，江西 新余 338004;2.大連海事大學(xué) 海底工程技術(shù)與裝備國際聯(lián)合研究中心，遼寧 大連 116026;3.九江學(xué)院 江西省表面綠色再制造工程技術(shù)中心，江西 九江 332005

作者簡介:

通訊作者:

中圖分類號:

基金項目:


Microstructure and Properties of In Situ Synthesized MoB/NiCr Coatings with Different (Mo+B)/(Ni+Cr) Mass Ratios
Author:
Affiliation:

1.Xinyu Key Laboratory of Materials Technology and Application for Intelligent Manufacturing, Xinyu University, Xinyu 338004, China;2.National Center for International Research of Subsea Engineering Technology and Equipment, Dalian Maritime University, Dalian 116026, China;3.Jiangxi Province Engineering Research Center of Materials Surface Enhancing & Remanufacturing, Jiujiang University, Jiujiang 332005, China

Fund Project:

National Natural Science Foundation of China (51861012); Science and Technology Project of Jiangxi Educational Bureau (GJJ191068, GJJ191049); Science Technology Project of Jiujiang City ([2015]-64)

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問統(tǒng)計
    • |
  • 參考文獻(xiàn)
    • |
  • 相似文獻(xiàn)
    • |
  • 引證文獻(xiàn)
    • |
  • 資源附件
    • |
  • 文章評論
    摘要:

    采用超音速火焰噴涂技術(shù)沉積含3種不同(Mo+B)/(Ni+Cr)質(zhì)量比（1:1，2:1和3:1）的Mo-B-Ni-Cr球磨復(fù)合粉末以原位反應(yīng)制備獲得MoB/NiCr涂層。采用掃描電子顯微鏡（SEM）和X射線衍射儀（XRD）分析了MoB/NiCr涂層的組織結(jié)構(gòu)和物相。同時討論了不同(Mo+B)/(Ni+Cr)質(zhì)量比對涂層的組織結(jié)構(gòu)、硬度、結(jié)合強度和耐腐蝕性能的影響。研究結(jié)果表明，(Mo+B)/(Ni+Cr)質(zhì)量比為1：1的MoB/NiCr涂層孔隙率最低及涂層厚度最大。在3種涂層中均原位反應(yīng)生成了Mo2NiB2三元硼化物，且隨著(Mo+B)/(Ni+Cr)質(zhì)量比的增加，涂層中三元硼化物含量隨之增加，涂層的硬度值增加，結(jié)合強度反而隨之降低；由于涂層中三元硼化物的原位生成，MoB/NiCr涂層的硬度值均高于316L不銹鋼基體。通過能譜和XRD分析發(fā)現(xiàn)，經(jīng)過360 h熔融鋅腐蝕試驗后，涂層表層中沒有發(fā)現(xiàn)鋅元素及其金屬間化合物，然而隨著(Mo+B)/(Ni+Cr)質(zhì)量比的增加，涂層的孔隙率增加及厚度降低。最后，綜合分析可得，相比其他涂層，(Mo+B)/(Ni+Cr)質(zhì)量比為1:1的MoB/NiCr涂層具有更好的耐熔融鋅腐蝕能力。

    Abstract:

    Three kinds of Mo-B-Ni-Cr ball-milled mixture powders with different (Mo+B)/(Ni+Cr) mass ratios (1:1, 2:1, and 3:1) were deposited by the high velocity oxygen-fuel (HVOF) spraying process to in situ synthesize MoB/NiCr coatings. The microstructure and phase composition of MoB/NiCr coatings were analyzed by scanning electron microscope (SEM) and X-ray diffraction (XRD). The effects of different (Mo+B)/(Ni+Cr) mass ratios on the microstructure, microhardness, bonding strength, and corrosion resistance of MoB/NiCr coatings were discussed. The results show that MoB/NiCr coatings with (Mo+B)/(Ni+Cr) mass ratio of 1:1 have the lowest porosity and the largest thickness. Mo2NiB2 ternary boride was in situ synthesized in all three kinds of MoB/NiCr coatings. The content of Mo2NiB2 ternary boride is increased with increasing the (Mo+B)/(Ni+Cr) mass ratio. The microhardness of MoB/NiCr coatings is increased with increasing the (Mo+B)/(Ni+Cr) mass ratio, while the bonding strength is decreased. After immersion test in molten zinc for 360 h, no zinc or its intermetallic compound can be observed in the surface region of MoB/NiCr coatings according to energy disperse spectrometer (EDS) and XRD analyses. The porosity of the coatings is increased with increasing the (Mo+B)/(Ni+Cr) mass ratio, while the thickness is decreased. Compared with other coatings, the MoB/NiCr coating with (Mo+B)/(Ni+Cr) mass ratio of 1:1 has better corrosion resistance in molten zinc.

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

陳梟,李承娣,周鴻凱,皮智敏,白小波.不同(Mo+B)/(Ni+Cr)質(zhì)量比的原位合成MoB/NiCr涂層的組織結(jié)構(gòu)與性能[J].稀有金屬材料與工程,2021,50(9):3085~3093.[Chen Xiao, Li Chengdi, Zhou Hongkai, Pi Zhimin, Bai Xiaobo. Microstructure and Properties of In Situ Synthesized MoB/NiCr Coatings with Different (Mo+B)/(Ni+Cr) Mass Ratios[J]. Rare Metal Materials and Engineering,2021,50(9):3085~3093.]
DOI：10.12442/j. issn.1002-185X.20200578

復(fù)制
文章指標(biāo)
  • 點擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:2020-08-06
  • 最后修改日期:2020-09-12
  • 錄用日期:2020-09-21
  • 在線發(fā)布日期: 2021-09-26
  • 出版日期: 2021-09-24