2-SiC復(fù)合材料;致密化;微觀組織;力學(xué)性能;氧化行為"/> 2-SiC復(fù)合材料，研究了燒結(jié)過(guò)程中復(fù)合材料的致密化行為，分析了添加W對(duì)復(fù)合材料微觀組織演化、相組成、力學(xué)性能和氧化行為的影響。結(jié)果表明：W的添加使復(fù)合材料的微觀組織表現(xiàn)出核殼結(jié)構(gòu)，以ZrB2晶粒為核，原位形成的(Zr, W)B2固溶體為殼，有效地促進(jìn)了復(fù)合材料的致密化和晶粒細(xì)化。對(duì)比不含W的復(fù)合材料，含W復(fù)合材料的維氏硬度、抗彎曲強(qiáng)度和斷裂韌性顯著提高，W添加含量在3%時(shí)力學(xué)性能最優(yōu)，復(fù)合材料表現(xiàn)出最佳的硬度、強(qiáng)度和韌性。隨著W添加量從0%增加到5%，復(fù)合材料的氧化增重和氧化層厚度逐漸減小。當(dāng)W添加量為5%時(shí)，復(fù)合材料的SiC貧化層消失。最后，詳細(xì)說(shuō)明了W的添加對(duì)復(fù)合材料性能的影響機(jī)制。"/>

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添加W對(duì)ZrB2-SiC復(fù)合材料的微觀組織、力學(xué)性能和氧化行為的影響
作者:
作者單位:

1.西安科技大學(xué) 機(jī)械工程學(xué)院，陜西 西安 710054;2.中國(guó)科學(xué)院 蘭州化學(xué)物理研究所 固體潤(rùn)滑國(guó)家重點(diǎn)實(shí)驗(yàn)室，甘肅 蘭州 730000;3.煙臺(tái)先進(jìn)材料與綠色制造山東省實(shí)驗(yàn)室，山東 煙臺(tái) 264006;4.煙臺(tái)中科先進(jìn)材料與綠色化工產(chǎn)業(yè)技術(shù)研究院，山東 煙臺(tái) 264006;5.西北有色金屬研究院，陜西 西安 710016

作者簡(jiǎn)介:

通訊作者:

中圖分類(lèi)號(hào):

基金項(xiàng)目:

Foundation item: NSFC(51804251, 52104384), Science Fund of Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing (AMGM2021F04), Shandong Provincial Natural Science Foundation (ZR2021ME168 and ZR2021JQ20), Planning project of Xi 'an Science and Tech-nology(21XJZZ0041), LICP Cooperation Foundation for Young Scholars, the Taishan Scholars Program of Shandong Province, and the Youth Innovation Promotion Association CAS 2021423, Key Research and Development Program of Shaanxi (2023-YBGY-343).


Effect of W Addition on Microstructure, Mechanical Properties, and Oxidation Behavior of ZrB2-SiC Composites
Author:
Affiliation:

1.College of Mechanical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China;2.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;3.Shandong Laboratory of Yantai Advanced Materials and Green Manufacture, Yantai 264006, China;4.Yantai Zhongke Research Institute of Advanced Materials and Green Chemical Engineering, Yantai 264006, China;5.Northwest Institute for Nonferrous Metal Research, Xi 'an 710016, China

Fund Project:

National Natural Science Foundation of China (51804251, 52104384); Science Fund of Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing (AMGM2021F04); Shandong Provincial Natural Science Foundation (ZR2021ME168, ZR2021JQ20); Planning Project of Xi'an Science and Technology (21XJZZ0041); LICP Cooperation Foundation for Young Scholars (HZJJ21-07); Taishan Scholars Program of Shandong Province; Youth Innovation Promotion Association (CAS 2021423); Key Research and Development Program of Shaanxi (2023-YBGY-343)

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    摘要:

    通過(guò)放電等離子燒結(jié)技術(shù)制備了添加不同W含量(1%，3%和5%，體積分?jǐn)?shù)，下同)的ZrB2-SiC復(fù)合材料，研究了燒結(jié)過(guò)程中復(fù)合材料的致密化行為，分析了添加W對(duì)復(fù)合材料微觀組織演化、相組成、力學(xué)性能和氧化行為的影響。結(jié)果表明：W的添加使復(fù)合材料的微觀組織表現(xiàn)出核殼結(jié)構(gòu)，以ZrB2晶粒為核，原位形成的(Zr, W)B2固溶體為殼，有效地促進(jìn)了復(fù)合材料的致密化和晶粒細(xì)化。對(duì)比不含W的復(fù)合材料，含W復(fù)合材料的維氏硬度、抗彎曲強(qiáng)度和斷裂韌性顯著提高，W添加含量在3%時(shí)力學(xué)性能最優(yōu)，復(fù)合材料表現(xiàn)出最佳的硬度、強(qiáng)度和韌性。隨著W添加量從0%增加到5%，復(fù)合材料的氧化增重和氧化層厚度逐漸減小。當(dāng)W添加量為5%時(shí)，復(fù)合材料的SiC貧化層消失。最后，詳細(xì)說(shuō)明了W的添加對(duì)復(fù)合材料性能的影響機(jī)制。

    Abstract:

    The ZrB2-SiC composites with refractory metal W of different contents (1vol%, 3vol%, and 5vol%) were prepared by spark plasma sintering. The densification behavior of composites during sintering process was investigated. The influence of W additions on the microstructure evolution, phase composition, mechanical properties, and oxidation behavior of W-doped composites was studied. Results show that the W addition leads to the formation of core-shell structures in the composites, where the ZrB2 grains are considered as the core and the in-situ formed (Zr, W)B2 solid solution is considered as the shell, thereby effectively promoting the grain refinement and composite densification. Compared with those of the W-free composites, the Vickers hardness, flexural strength, and fracture toughness of W-doped composites are enhanced. The optimal mechanical properties can be achieved at W addition content of 3vol%: the highest hardness, strength, and toughness can be obtained for the composites. The mass gain and oxide scale thickness of composites are gradually decreased with increasing the W addition from 0vol% to 5vol%. When the W addition in composite is 5vol%, the SiC-depleted layer disappears. Finally, the influence mechanism of W addition on the performance of composites is discussed.

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高中堂,盧佳煒,于源,王毅飛,余德鋒,李彤陽(yáng),王魯杰,湯華國(guó),喬竹輝.添加W對(duì)ZrB2-SiC復(fù)合材料的微觀組織、力學(xué)性能和氧化行為的影響[J].稀有金屬材料與工程,2023,52(9):3003~3011.[Gao Zhongtang, Lu Jiawei, Yu Yuan, Wang Yifei, Yu Defeng, Li Tongyang, Wang Lujie, Tang Huaguo, Qiao Zhuhui. Effect of W Addition on Microstructure, Mechanical Properties, and Oxidation Behavior of ZrB2-SiC Composites[J]. Rare Metal Materials and Engineering,2023,52(9):3003~3011.]
DOI：10.12442/j. issn.1002-185X.20220953

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  • 收稿日期:2022-12-07
  • 最后修改日期:2023-03-16
  • 錄用日期:2023-03-17
  • 在線(xiàn)發(fā)布日期: 2023-09-22
  • 出版日期: 2023-09-21