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不銹鋼表面TiN、TiO2涂層化學(xué)氣相沉積制備及抑焦性能研究
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四川大學(xué)化學(xué)工程學(xué)院,四川大學(xué)化學(xué)學(xué)院,四川大學(xué)化學(xué)工程學(xué)院,四川大學(xué)化學(xué)工程學(xué)院,四川大學(xué)化學(xué)學(xué)院,四川大學(xué)化學(xué)工程學(xué)院,四川大學(xué)化學(xué)工程學(xué)院

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O643

基金項(xiàng)目:

國家自然科學(xué)基金(No. 91016002, 20903067)，四川大學(xué)優(yōu)秀青年學(xué)者科研基金(2013SCU04A05)和教育部新世紀(jì)優(yōu)秀人才支持計(jì)劃(NCET-13-0398)


The Preparation of TiN and TiO2 Coating on Stainless Steel Surface by Chemical Vapor Depostion Method and the investigation o
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College of Chemical Engineering, Sichuan University,College of Chemistry, Sichuan University,College of Chemical Engineering, Sichuan University,College of Chemical Engineering, Sichuan University,College of Chemistry, Sichuan University,College of Chemical Engineering, Sichuan University,College of Chemical Engineering, Sichuan University

Fund Project:

National Natural Science Foundation of China (No. 91016002, 20903067), Outstanding Young Scholar Fund of Sichuan University (2013SCU04A05) and New Century Excellent Talents Supporting Project by Education Ministry (NCET-13-0398)

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    摘要:

    為抑制不銹鋼材料表面催化結(jié)焦，采用常壓化學(xué)氣相沉積法，實(shí)現(xiàn)了在10?0?.9 mm的310S型不銹鋼試樣表面TiN和TiO2涂層的直接沉積，沉積溫度均為850 ℃，沉積時(shí)間為2.5 h。通過SEM、EDS和XRD分析了涂層的形貌特征和組織結(jié)構(gòu)，結(jié)果顯示，TiN和TiO2涂層表面均勻完整，粒子結(jié)合緊密；氮化鈦為立方晶相結(jié)構(gòu)，Ti和N原子比約為1:1，氧化鈦是非計(jì)量化合物，它的組成為Ti2O3~Ti3O5。分別以正己烷、環(huán)己烷、苯和RP-3為原料，采用自制的常壓裂解裝置對TiN和TiO2涂層的抑制結(jié)焦效果進(jìn)行了評價(jià)。結(jié)果表明，TiN涂層對正己烷、環(huán)己烷、苯和RP-3的結(jié)焦抑制率分別為99.91%、86.19%、72.36%和94.68%，而相對應(yīng)的TiO2涂層則為83.39%、85.77%、57.78%和68.57%，TiN涂層具有更優(yōu)良的抑制結(jié)焦性能；310S空白片表面以絲狀焦為主，TiN和TiO2涂層表面以吸附氣相結(jié)焦為主。

    Abstract:

    In order to avoid the catalytic cokes forming, the TiN and TiO2 coating is directly deposited on the surface of the 310S stainless steel flake with the diameter of 10?10?0.9 mm by using atmospheric pressure chemical vapor deposition method. The deposition temperature is 850 ℃ for TiN and TiO2, respectively, and the deposition time is 2.5 h. The morphologies and structures of the coatings were analyzed by SEM, EDS and XRD, the results show that the TiN and TiO2 coating is continuous, close-packed and homogeneous; the titanium nitride in the coating had cub phase, Ti and N atomic ratio in the titanium nitride coating is 1:1, and the titanium oxide in the coating is the Ti2O3~Ti3O5 stoichiometrically. An atmospheric pressure cracking system was set up for evaluating the anti-coking property of TiN and TiO2 coating with n-hexane, cyclohexane, benzene and RP-3 as feedstock. The results show that TiN and TiO2 coating exhibit an excellent anti-coking performance, the anti-coking ratio of TiN coating for n-hexane, cyclohexane, benzene and RP-3 is 99.91%, 86.19%, 72.36% and 99.91%, respectively. Correspondingly, the anti-coking ratio of TiO2 coating is 83.39%, 85.77%, 68.57 and 85.77%, respectively. Hence, the TiN coating has the better anti-coking performance than that of TiO2 coating. The morphologies of the cokes on 310S surface are mainly filamentous cokes, and TiN and TiO2 coatings inhibites the filamentous cokes formation.

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引用本文

胡生望,唐石云,高爽,朱權(quán),王健禮,張其翼,李象遠(yuǎn).不銹鋼表面TiN、TiO2涂層化學(xué)氣相沉積制備及抑焦性能研究[J].稀有金屬材料與工程,2016,45(12):3121~3127.[Hu Shengwang, Tang Shiyun, Gao Shuang, Zhu Quan, Wang Jianli, zhang Qiyi, Li Xiangyuan. The Preparation of TiN and TiO2 Coating on Stainless Steel Surface by Chemical Vapor Depostion Method and the investigation o[J]. Rare Metal Materials and Engineering,2016,45(12):3121~3127.]
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  • 收稿日期:2014-09-02
  • 最后修改日期:2015-01-06
  • 錄用日期:2015-01-13
  • 在線發(fā)布日期: 2017-02-06
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