0.92Y0.08O1.96（YSZ）增韌稀土復(fù)合氧化物L(fēng)aTi2Al9O19（LTA）顆粒通過噴霧干燥制備出噴涂粉體，采用不同溫度對其進(jìn)行煅燒，并研究不同溫度的熱處理對噴霧干燥粉體的流動(dòng)性、松裝密度和形貌的影響。結(jié)果表明：未經(jīng)熱處理的噴霧干燥粉體呈現(xiàn)出疏松結(jié)構(gòu)，粒徑為40~80 μm。經(jīng)過熱處理后，LTA-YSZ顆粒之間的結(jié)合更加緊密，在1100 ℃下煅燒的粉體具有最好的噴霧特性和形貌。通過等離子噴涂進(jìn)行沉積制備的LTA-YSZ涂層呈現(xiàn)良好的層狀結(jié)構(gòu)，并伴有缺陷。"/>

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熱處理對大氣等離子噴涂LaTi2Al9O19-Zr0.92Y0.08O1.96 復(fù)合涂層粉末的影響
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作者單位:

1.清華大學(xué) 新型陶瓷與精細(xì)工藝國家重點(diǎn)實(shí)驗(yàn)室，北京 100084;2.南京工業(yè)大學(xué) 材料科學(xué)與工程學(xué)院，江蘇 南京 211816

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基金項(xiàng)目:

國家自然科學(xué)基金項(xiàng)目（面上項(xiàng)目，重點(diǎn)項(xiàng)目，重大項(xiàng)目）,中國博士后科學(xué)基金


Effect of Heat Treatment on LaTi2Al9O19-Zr0.92Y0.08O1.96 Com-posite Coating Powders by Air Plasma Spraying
Author:
Affiliation:

1.State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, China;2.College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China

Fund Project:

National Natural Science Foundation of China (51590893, 51902172); China Postdoctoral Science Foundation (2019M650670)

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    摘要:

    將納米/亞微米級(jí)Zr0.92Y0.08O1.96（YSZ）增韌稀土復(fù)合氧化物L(fēng)aTi2Al9O19（LTA）顆粒通過噴霧干燥制備出噴涂粉體，采用不同溫度對其進(jìn)行煅燒，并研究不同溫度的熱處理對噴霧干燥粉體的流動(dòng)性、松裝密度和形貌的影響。結(jié)果表明：未經(jīng)熱處理的噴霧干燥粉體呈現(xiàn)出疏松結(jié)構(gòu)，粒徑為40~80 μm。經(jīng)過熱處理后，LTA-YSZ顆粒之間的結(jié)合更加緊密，在1100 ℃下煅燒的粉體具有最好的噴霧特性和形貌。通過等離子噴涂進(jìn)行沉積制備的LTA-YSZ涂層呈現(xiàn)良好的層狀結(jié)構(gòu)，并伴有缺陷。

    Abstract:

    The nano/submicron scaled spraying powders of lanthanum titanium aluminum oxide LaTi2Al9O19 (LTA) toughened by yttria stabilized zirconia Zr0.92Y0.08O1.96 (YSZ) were prepared via spray drying and then calcined at different temperatures. The effect of heat treatment on the flowability, apparent density, and morphology of the spray-dried powders was investigated. Results show that the spray-dried powders have loose structure with the size of 40~80 μm. The cohesion between LTA-YSZ particles becomes stronger after calcination. The spray-dried powders calcined at 1100 °C achieve the optimal spraying characteristics and morphology, and therefore are deposited via air plasma spraying (APS) to obtain LTA-YSZ coatings which show a good lamellar structure with defects.

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楊澤生,宗鵬安,黃慕章,韓毅,周華建,馮英杰,張鵬,萬春磊.熱處理對大氣等離子噴涂LaTi2Al9O19-Zr0.92Y0.08O1.96 復(fù)合涂層粉末的影響[J].稀有金屬材料與工程,2022,51(5):1601~1605.[Yang Zesheng, Zong Peng-an, Huang Muzhang, Han Yi, Zhou Huajian, Feng Yingjie, Zhang Peng, Wan Chunlei. Effect of Heat Treatment on LaTi2Al9O19-Zr0.92Y0.08O1.96 Com-posite Coating Powders by Air Plasma Spraying[J]. Rare Metal Materials and Engineering,2022,51(5):1601~1605.]
DOI：10.12442/j. issn.1002-185X.20210257

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  • 收稿日期:2021-03-24
  • 最后修改日期:2021-06-17
  • 錄用日期:2021-07-09
  • 在線發(fā)布日期: 2022-05-31
  • 出版日期: 2022-05-30