2納米顆粒;熱防護性能"/> 2納米顆粒的電解液體系在Al-12.5%Si合金表面制備ZrO2- Al2O3- SiO2三相PEO陶瓷層。利用SEM和XRD對陶瓷層微觀結(jié)構(gòu)和物相進(jìn)行分析,并對其隔熱及熱沖擊性能進(jìn)行測試。結(jié)果表明：ZrO2納米顆粒顯著提高了膜層的致密度和結(jié)合性,并有效減弱了Si元素對PEO成膜的抑制作用,提高了成膜速率；三相PEO陶瓷層的主要物相為SiO2及高溫穩(wěn)定相α-Al2O3和c-ZrO2,其獨特的微結(jié)構(gòu)和成分致使ZrO2納米顆粒改性的陶瓷層具有良好的熱防護性能和熱沖擊性能。"/>

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ZrO2納米顆粒對Al-12.5%Si合金PEO陶瓷層性能的影響
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西安工業(yè)大學(xué)材料與化工學(xué)院,西安工業(yè)大學(xué)材料與化工學(xué)院,西安工業(yè)大學(xué)材料與化工學(xué)院,西安工業(yè)大學(xué)材料與化工學(xué)院,西安工業(yè)大學(xué)材料與化工學(xué)院,西安工業(yè)大學(xué)材料與化工學(xué)院

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國家自然科學(xué)基金資助(批準(zhǔn)號：51401155)


Effects of ZrO2 nano-particles on properties of PEO ceramic coating on Al-12.5%Si alloy
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Xi'an Technological University,,,,

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    摘要:

    采用外加ZrO2納米顆粒的電解液體系在Al-12.5%Si合金表面制備ZrO2- Al2O3- SiO2三相PEO陶瓷層。利用SEM和XRD對陶瓷層微觀結(jié)構(gòu)和物相進(jìn)行分析,并對其隔熱及熱沖擊性能進(jìn)行測試。結(jié)果表明：ZrO2納米顆粒顯著提高了膜層的致密度和結(jié)合性,并有效減弱了Si元素對PEO成膜的抑制作用,提高了成膜速率；三相PEO陶瓷層的主要物相為SiO2及高溫穩(wěn)定相α-Al2O3和c-ZrO2,其獨特的微結(jié)構(gòu)和成分致使ZrO2納米顆粒改性的陶瓷層具有良好的熱防護性能和熱沖擊性能。

    Abstract:

    The PEO ceramic coatings included ZrO2-Al2O3-SiO2 three phases were prepared on Al-12.5%Si alloy in the electrolyte solutions containing ZrO2 nano-particles.The microstructures and phases of the coatings were analysed by SEM and XRD,and the heat insulation performances and the thermal shock resistances were also investigated.The results show that the ZrO2 nano-particles can increase the density and binding performance of the coatings significantly,and effectivly weaken the inhibition of Si element on PEO process and then improve the growth rate of PEO coatings; the PEO ceramic coatings included three phases are mainly composed of SiO2 and steady phases such asα-Al2O3 and c-ZrO2,and it is the special microstructure and composition makes the ceramic coatings formed in solutions with ZrO2 nano-particles posses good heat insulation performances and thermal shock resistances.

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王萍,韓婧,趙玉厚,李建平,郭永春,楊忠. ZrO2納米顆粒對Al-12.5%Si合金PEO陶瓷層性能的影響[J].稀有金屬材料與工程,2017,46(5):1346~1352.[Wang Ping, Han Jing, Zhao Yuhou, Li Jianping, Guo Yongchun, Yang Zhong. Effects of ZrO2 nano-particles on properties of PEO ceramic coating on Al-12.5%Si alloy[J]. Rare Metal Materials and Engineering,2017,46(5):1346~1352.]
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  • 收稿日期:2015-03-12
  • 最后修改日期:2015-05-11
  • 錄用日期:2015-06-11
  • 在線發(fā)布日期: 2017-09-27
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