惰性无机填料比例和颗粒尺寸对纳米Al/Al2O3 改性有机硅涂料抗高温氧化行为的影响

doi:10.11901/1005.3093.2021.188

材料研究学报

2022, Vol. 36

Issue (4): 271-277 DOI: 10.11901/1005.3093.2021.188

研究论文

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惰性无机填料比例和颗粒尺寸对纳米Al/Al₂O₃ 改性有机硅涂料抗高温氧化行为的影响

陈铮¹, 杨芳¹, 王成²^,³(

), 杜瑶², 卢壹梁², 朱圣龙²^,⁴^,⁵, 王福会⁴^,⁵

^1.辽宁工程技术大学材料科学与工程学院阜新 123000
^2.中国科学院金属研究所师昌绪先进材料创新中心沈阳 110016
^3.江苏集萃道路工程技术与装备研究所有限公司徐州 220005
^4.东北大学材料科学与工程学院沈阳 110016
^5.沈阳材料科学国家研究中心沈阳 110016

Effect of Inorganic Fillers on High Temperature Oxidation Resistance of Nano-Al/Al₂O₃ Modified Organic Silicone Coatings

CHEN Zheng¹, YANG Fang¹, WANG Cheng²^,³(

), DU Yao², LU Yiliang², ZHU Shenglong²^,⁴^,⁵, WANG Fuhui⁴^,⁵

^1.Liaoning Technical University, College of Materials Science & Engineering, Fuxin 123000, China
^2.Shi -changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
^3.Jiangsu JITRI Road Engineering Technology and Equipment Research Institute Co. Ltd., Xuzhou 220005, China
^4.School of Materials Science and Engineering, Northeastern University, Shenyang 110189, China
^5.Shenyang National Laboratory for Materials Science, Shenyang 110016, China

引用本文:

陈铮, 杨芳, 王成, 杜瑶, 卢壹梁, 朱圣龙, 王福会. 惰性无机填料比例和颗粒尺寸对纳米Al/Al₂O₃ 改性有机硅涂料抗高温氧化行为的影响[J]. 材料研究学报, 2022, 36(4): 271-277.
Zheng CHEN, Fang YANG, Cheng WANG, Yao DU, Yiliang LU, Shenglong ZHU, Fuhui WANG. Effect of Inorganic Fillers on High Temperature Oxidation Resistance of Nano-Al/Al₂O₃ Modified Organic Silicone Coatings[J]. Chinese Journal of Materials Research, 2022, 36(4): 271-277.

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摘要:

本文研究了纳米ZrO₂、亚微米碳化硅、微米玻璃粉(软化点450℃)填料含量对304不锈钢表面纳米Al/Al₂O₃改性有机硅涂层的600℃高温氧化行为的影响。在1000 h氧化测试过程中,不锈钢样品表面涂层未出现剥落,未观察到基体氧化膜,说明涂层具有良好的抗氧化性能。对氧化后样品的显微观察表明,ZrO₂、SiC和玻璃粉质量分数分别为7%、7%和3%时的涂层中未出现微孔,而玻璃粉质量分数为7%的两种涂层中则出现了大量的微孔。相应地,前者的氧化增重也仅为后两者的约60%,这说明减少玻璃粉的添加量,可消除涂层微孔,有利于提高涂层的抗氧化性能。

关键词 ：材料失效与保护, 耐高温氧化, 纳米填料, 有机硅, 304不锈钢

Abstract：

Paints based on nano Al/Al₂O₃ modified silicone resin coupled with fillers of various amounts of inorganic powders i.e., nano-ZrO₂, sub-micro-SiC and micro-glass of softening point 450℃, were prepared and applied on 304 stainless steels. Then the oxidation test of the coated steels was carried out in air at 600℃ for 1000 h in order to reveal the effect of the fillers on the oxidation resistance of nano Al/Al₂O₃ modified silicone resin paints. Results show that all the test paints exhibited excellent oxidation resistance, while no spallation of the paints and little oxidation of the substrate beneath the paints were observed after oxidation test. It is worth noting that few micropore was observed in the tested paints coupled with 7% ZrO₂, 7% SiC and 3% glass (in mass fraction), but there exist obvious micropores in the other two paints coupled with 7% glass. Moreover, the mass gain of the former was only about 60% of those of the latter two. Therefore, it is reasonable to conclude that by coupling with lower mass fraction of glass powder, the formation of micropores in the paints may be inhibited, as a result, the oxidation resistance of the paints can further be enhanced.

Key words： failure and protection of materials anti-high temperature oxidation nano filler organosilicon 304 stainless steel

收稿日期: 2021-03-18

ZTFLH:

TG174

基金资助:国家重点研发计划(2018YFB2003601)

作者简介: 陈铮,男,1994年生,硕士生

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https://www.cjmr.org/CN/10.11901/1005.3093.2021.188 或 https://www.cjmr.org/CN/Y2022/V36/I4/271

表1 304SS的化学组成(%,质量分数)

表2 纳米Al/Al2O3改性有机硅涂料组成(%,质量分数)

图1 304SS和涂层在600℃的氧化动力学曲线

图2 304SS基体与1#, 2#, 3#涂层在600℃氧化1000 h后的XRD谱

图3 304SS在600℃氧化1000 h后的SEM表面和截面形貌

图4 1#(a, b, c)、2#(d, e, f)、3#(g, h, i)涂层原始SEM的表面和截面形貌

图5 1#(a, b) 、2#(c, d) 、3#(e, f)涂层在600℃氧化5 min后的SEM表面和截面形貌

图6 1#(a, b)、2#(c, d)、3#(e, f)涂层在600℃氧化1000h后的SEM表面和截面形貌

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