Sol–Gel Synthesis of Functionally Graded SiC–TiC Ceramic Material

E. P. Simonenko; N. P. Simonenko; V. A. Nikolaev; E. K. Papynov; O. O. Shichalin; E. A. Gridasova; V. Yu. Maiorov; A. V. Grishin; V. G. Sevastyanov; N. T. Kuznetsov

doi:10.1134/S0036023619110202

Sol–Gel Synthesis of Functionally Graded SiC–TiC Ceramic Material

作者: Simonenko E.P.¹, Simonenko N.P.¹, Nikolaev V.A.¹, Papynov E.K.²^,3, Shichalin O.O.²^,3, Gridasova E.A.³, Maiorov V.Y.³, Grishin A.V.³, Sevastyanov V.G.¹, Kuznetsov N.T.¹
隶属关系:
1. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences
2. Institute of Chemistry, Far-Eastern Branch, Russian Academy of Sciences
3. Far-Eastern Federal University
期: 卷 64, 编号 11 (2019)
页面: 1456-1463
栏目: Inorganic Materials and Nanomaterials
URL: https://journals.rcsi.science/0036-0236/article/view/169570
DOI: https://doi.org/10.1134/S0036023619110202
ID: 169570

如何引用文章

全文:

开放存取

##reader.subscriptionAccessGranted##
受限制的访问

订阅存取

详细
作者简介
参考
补充文件
统计

详细

Functionally graded SiC–TiC composite materials are promising for using in the aerospace industry as relatively low-density materials. The production of such materials by the sol–gel synthesis of a finely divided titanium carbide matrix in the pore space of SiC frameworks was studied. It was demonstrated that the distribution of the TiC matrix in the space of the SiC framework can be changed by varying the composition of the coordination sphere of precursors. It was shown that, after eight cycles of hydrolysis of titanium-containing precursors in the presence of a phenol formaldehyde resin with subsequent carbonization and carbothermal synthesis (1400°C, dynamic vacuum, 2 h), the weight gains of the samples differed significantly: for the precursor [Ti(OC₄H₉)_2.05(O₂C₅H₇)_1.95], which is more sensitive to moisture, it was 23%, and for the complex [Ti(OC₄H₉)_1.95(O₂C₅H₇)_2.05], it was 37%. Moreover, in the former case, near-surface regions of the material were predominantly densified. It was noted that, with increasing content of the modifying phase TiC, the compressive strength increased, and the specific surface area decreased (as determined by low-temperature nitrogen sorption and mercury porosimetry). The obtained gradient of the composition of the SiC–TiC ceramics across the depth was confirmed by X-ray computed microtomography: the total porosity of the near-surface regions of the ceramics differed by a factor of 2.9.

关键词

sol–gel technology, silicon carbide, titanium carbide, ceramics, functionally graded material

补充文件

附件文件

动作

1. JATS XML

下载

用户名
密码
记住我

忘记您的密码?	注册

用户名
密码
记住我

忘记您的密码?	注册

Sol–Gel Synthesis of Functionally Graded SiC–TiC Ceramic Material

全文:

详细

关键词

作者简介

E. Simonenko

N. Simonenko

V. Nikolaev

E. Papynov

O. Shichalin

E. Gridasova

V. Maiorov

A. Grishin

V. Sevastyanov

N. Kuznetsov

补充文件