Impact of a Supersonic Dissociated Air Flow on the Surface of HfB 2 –30 vol % SiC UHTC Produced by the Sol–Gel Method

E. P. Simonenko; N. P. Simonenko; A. N. Gordeev; A. F. Kolesnikov; E. K. Papynov; O. O. Shichalin; K. Yu. Tal’skikh; E. A. Gridasova; V. A. Avramenko; V. G. Sevastyanov; N. T. Kuznetsov

doi:10.1134/S0036023618110177

Impact of a Supersonic Dissociated Air Flow on the Surface of HfB₂–30 vol % SiC UHTC Produced by the Sol–Gel Method

作者: Simonenko E.P.¹, Simonenko N.P.¹, Gordeev A.N.², Kolesnikov A.F.², Papynov E.K.³^,4, Shichalin O.O.³^,4, Tal’skikh K.Y.³^,4, Gridasova E.A.³^,4, Avramenko V.A.³^,4, Sevastyanov V.G.¹, Kuznetsov N.T.¹
隶属关系:
1. Kurnakov Institute of General and Inorganic Chemistry
2. Ishlinskii Institute of Problems of Mechanics
3. Institute of Chemistry, Far-Eastern Branch
4. Far-Eastern Federal University
期: 卷 63, 编号 11 (2018)
页面: 1484-1493
栏目: Physical Methods of Investigation
URL: https://bakhtiniada.ru/0036-0236/article/view/169109
DOI: https://doi.org/10.1134/S0036023618110177
ID: 169109

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

A new method to produce ultra-high-temperature ceramic composites under rather mild conditions (1700°C, 30 MPa, treatment time 15 min) was applied to synthesize a relatively dense (ρ_rel = 84.5%) HfB₂–30 vol % SiC material containing nanocrystalline silicon carbide (average crystallite size ∼37 nm). The elemental and phase compositions, microstructure, and some mechanical properties of this material and also its thermal behavior in an air flow within the temperature range 20–1400°C were investigated. Using a high-frequency induction plasmatron, a study was made of the effect of a supersonic dissociated air flow on the surface of the produced ultra-high-temperature ceramic composite shaped as a flat-end cylindrical sample installed into a copper water-cooled holder. On 40-min exposure of the sample to the supersonic dissociated air flow, the sample did not fail, and the weight loss was 0.04%. Although the heat flux was high, the temperature on the surface did not exceed 1400–1590°C, which could be due to the heat transfer from the sample to the water-cooled model. The thickness of the oxidized layer under these conditions was 10–20 μm; no SiC-depleted region formed. Specific features of the microstructure of the oxidized surface layer of the sample were noted.

关键词

sol–gel technology, nanomaterial, UHTC, thermochemical impact, high-enthalpy air flow, induction plasmatron

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

Impact of a Supersonic Dissociated Air Flow on the Surface of HfB₂–30 vol % SiC UHTC Produced by the Sol–Gel Method

全文:

详细

关键词

作者简介

E. Simonenko

N. Simonenko

A. Gordeev

A. Kolesnikov

E. Papynov

O. Shichalin

K. Tal’skikh

E. Gridasova

V. Avramenko

V. Sevastyanov

N. Kuznetsov

补充文件

Impact of a Supersonic Dissociated Air Flow on the Surface of HfB2–30 vol % SiC UHTC Produced by the Sol–Gel Method

全文:

详细

关键词

作者简介

补充文件

Impact of a Supersonic Dissociated Air Flow on the Surface of HfB₂–30 vol % SiC UHTC Produced by the Sol–Gel Method