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
化學(xué)復(fù)合鍍Ni-Mo-P/CeO2鍍層結(jié)構(gòu)與摩擦學(xué)性能研究
作者:
作者單位:

1.廣東工業(yè)大學(xué)材料與能源學(xué)院;2.廣東省科學(xué)院新材料研究所;3.中國航發(fā)沈陽黎明航空發(fā)動機(jī)有限責(zé)任公司;4.廣州鐵路職業(yè)技術(shù)學(xué)院機(jī)電工程學(xué)院

作者簡介:

通訊作者:

中圖分類號:

基金項目:

中國航發(fā)創(chuàng)新基金項目（ZGHF-ZL-2017-C068）


Study on the Structure and Tribological Properties of Electroless Composite Ni-Mo-P/CeO2 Coatings
Author:
Affiliation:

Fund Project:

中國航發(fā)創(chuàng)新基金項目（ZGHF-ZL-2017-C068）

  • 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:

    為研究CeO2稀土添加對Ni-Mo-P化學(xué)鍍層結(jié)構(gòu)及性能的影響，采用化學(xué)復(fù)合鍍技術(shù)，在GH4169鎳基高溫合金表面制備Ni-Mo-P鍍層、Ni-Mo-P/CeO2復(fù)合鍍層，并對其進(jìn)行400℃熱處理。利用掃描電子顯微鏡（SEM）、能譜儀（EDS）、X射線衍射儀（XRD）對鍍層組織結(jié)構(gòu)、元素組成、相結(jié)構(gòu)進(jìn)行分析。采用顯微硬度計、納米壓痕儀、球-盤式摩擦磨損試驗機(jī)、三維表面輪廓儀對鍍層力學(xué)性能和摩擦學(xué)性能進(jìn)行分析。結(jié)果表明:Ni-Mo-P鍍層分布有典型的球狀結(jié)構(gòu)，為納米晶和非晶混合的混晶態(tài)結(jié)構(gòu)，結(jié)晶化程度只有16%。加入CeO2顆粒后Ni-Mo-P/CeO2復(fù)合鍍層內(nèi)分布有孔洞，鍍層粗糙度增加，鍍層結(jié)晶化程度提高至51%。400℃熱處理后鍍層內(nèi)析出納米晶Ni3P相，鍍層結(jié)晶度增大，鍍層內(nèi)孔洞消失，組織致密度獲得改善。添加CeO2顆粒使鍍層的硬度有所降低，熱處理可明顯提高鍍層的硬度；熱處理后Ni-Mo-P鍍層硬度從鍍態(tài)的645HV上升至1378HV，Ni-Mo-P/CeO2復(fù)合鍍層硬度由鍍態(tài)的546HV提高至1141HV。400℃熱處理可以明顯提高鍍層的耐磨性能；CeO2顆粒的添加提高了鍍層的韌性，抑制了磨損過程中裂紋的產(chǎn)生，使得復(fù)合鍍層具有優(yōu)良的耐磨性能。

    Abstract:

    In order to study the effect of CeO2 addition on the structure and performance of Ni-Mo-P electroless plating coatings, Ni-Mo-P coatings and Ni-Mo-P/CeO2 composite coatings on the surface of GH4169 nickel-based superalloy were prepared by electroless composite plating technology. The influence of the heat treatment at 400 ℃ on the structure and properties of the coatings was also investigated. The microstructure, element composition, and phase structure of the coatings were analyzed by SEM, EDS and XRD respectively. The mechanical and tribological properties of the coatings was analyzed by microhardness tester, nanoindenter, ball-disk friction and wear tester, and three-dimensional surface profiler.The results show that the Ni-Mo-P coatings exhibits a typical spherical structure with nano and amorphous mixed crystalline structure.The crystallinity of the coatings was only 16%. The addition of CeO2 particles in the Ni-Mo-P/CeO2 composite coatings induces the voids in coatings and promotes the coarseness in morphology. The crystallinity of the mixed crystalline structure increases to 51%. The heat treatment has positive effect on the structure of the coatings, such as promoting the precipitation of Ni3P nano phase, increasing the crystallinity, eliminating the voids and promoting the density. Addition of CeO2 reduces the hardness of the coating. However, heat treatment can improve the hardness of the coatings significantly. The hardness of the Ni-Mo-P coatings increases from 645 HV in the plating state to 1378 HV in the heat treatment state, and the hardness of the Ni-Mo-P/CeO2 composite coatings increases from 546 HV in the plating state to 1141 HV in the heat treatment state. The wear resistance of the coatings is improved obviously after heat treatment. The addition of CeO2 particles to the coatings could enhance the toughness of the coatings, inhibit the occurrence of cracks during the wear process, thus the Ni-Mo-P/CeO2 composite coating have the best wear resistance.

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

王凱杰,韋春貝,張佳平,李浩宇,周克崧,林松盛,劉敏,胡永俊,李助軍,劉怡飛.化學(xué)復(fù)合鍍Ni-Mo-P/CeO2鍍層結(jié)構(gòu)與摩擦學(xué)性能研究[J].稀有金屬材料與工程,2022,51(12):4602~4609.[Wang-kaijie, Wei-chunbei, Zhang-jiaping, Li-haoyu, Zhou-kesong, Lin-songsheng, Liu-min, Hu-yongjun, Li-zhujun, Liu-yifei. Study on the Structure and Tribological Properties of Electroless Composite Ni-Mo-P/CeO2 Coatings[J]. Rare Metal Materials and Engineering,2022,51(12):4602~4609.]
DOI：10.12442/j. issn.1002-185X.20211037

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:2021-11-24
  • 最后修改日期:2022-01-21
  • 錄用日期:2022-02-09
  • 在線發(fā)布日期: 2023-01-19
  • 出版日期: 2022-12-30