JOURNAL OF ALLOYS AND COMPOUNDS
·
2017
·
IF 3.133
Liyun Cao,Zhe Bai,Jianfeng Huang,Haibo OuYang,Jianpeng Wu
The effects of hydrothermal penetration temperature on the ablation properties of C f /C-SiC-MoSi 2 composites were studied. With the hydrothermal temperature rising, the distribution depth of ceramics along the cross-section of the composites increased. Meanwhile, the increase in densities and the decrease in porosities of the composites were achieved. When the penetration temperature reached 200 °C, the composites showed the best ablation properties after plasma ablation test for 60 s at 2300 °C. The mass ablation rate was 2.28 mg cm −2 s −1 , which decreased by 65%, 54% and 29% compared to composites prepared at 140 °C, 160 °C and 180 °C, respectively. Also the sample prepared at 200 °C showed the lowest linear ablation rate. The increasing depth and amount of ceramics in the composites could provided SiC and MoSi 2 continuously to prevent the oxidation of carbon, rather than be easily blown away by strong scouring force. The good ablation behavior is attributed to the higher density and amounts of ceramics, the generation of SiO 2 and MoO 2 .
研究领域:
材料科学
·
复合材料
·
热防护系统
✓ 已验证
产品关联
DOI
高影响因子
CORROSION SCIENCE
·
2025
·
IF 8.5
Huan Guo,Bingzhu Wang,Ruifeng Li,Cheng Su,Jixiang Dai,Yong She,Yongzhong Zhao,Jianjun Sha
Aiming at forming a stable ablation layer for hafnium-based ultrahigh-temperature ceramics under ablation environment, in this work, the Ta-based ceramic was introduced into the Hf-based ceramic, and the effect of Hf/Ta molar ratios on the ablation response behavior and mechanism of (Hf, Ta)B 2 -(Hf, Ta)C-SiC ceramics was investigated. It was found that the introduction of Ta could form a continuous and dense ablation layer. When Hf/Ta= 0.9:0.1, the ceramic composite presented excellent ablation resistance, and the linear ablation rate was −0.083 μm/s, which was only 5.85 % of that of Hf-based ceramics (HfB 2 -HfC-SiC). The excellent ablation resistance attributed to that the ablation products (Ta 2 O 5 and Hf 6 Ta 2 O 17 ) could strongly bonded to the substrate, which was conducive to enhance the stability of the ablation layer.
研究领域:
材料科学
·
航空航天工程
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2018
·
IF 4.92
Jie Ding,Tao Yang,Zhixiong Huang,Yan Qin,Yanbing Wang
ZrSi 2 modified carbon–phenolic (C-Ph) composites are prepared using different weight loadings of zirconium silicide particle by compression moulding . The thermal stability and ablation resistance of composites are investigated by thermal gravimetric analysis (TGA) and oxyacetylene torch test. Moreover, the phase composition and microstructure of ablated surface are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM) and selected-area electron diffraction (SAED). The results show that introduced ZrSi 2 particles result in an evident increase in the residual weights of C–Ph composites at high temperatures, and the enhancement in thermal stability under air atmosphere exhibits positive effects on improving the ablation resistance of C-Ph composites. The optimum ZrSi 2 weight loading for the improvement of ablation resistance in C-Ph composites is 5wt%. The linear and mass ablation rates of composites after modifying with 5wt% ZrSi 2 particles are reduced by 80.5% and 55.2%, respectively. This work provides an effective way to prominently improve the ablation performance of C–Ph composites, and it maybe become a backbone of thermal protection system in aerospace.
研究领域:
材料科学
·
航空航天工程
✓ 已验证
产品关联
DOI
高影响因子
CORROSION SCIENCE
·
2022
·
IF 7.72
Wanbo Hou,Tao Feng,Xiangyuan Meng,Xinhao Shi,Mingde Tong,Hejun Li,Hongjiao Lin
The ablation resistance of C f /HfC PIP -SiC CVI composites was tested under an oxyacetylene flame. After ablation, many SiO 2 nanowires were in-situ grown in the edge region. From the edge region to the transition region, the melting behaviors of SiO 2 nanowires was gradually intensified, and finally, they completely transformed into SiO 2 glass. At the border of the central region and the transition region, the HfO 2 grains were gradually precipitated from the SiO 2 glass and formed a tubular structure. By comparing the ablation behaviors at different temperatures and times, the ablation mechanisms of C f /HfC PIP -SiC CVI composites was investigated systematically.
研究领域:
材料科学
·
航空航天工程
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Fan Zhang,Dewei Ni,Bowen Chen,Feiyan Cai,Hongda Wang,Le Gao,Ping He,Yusheng Ding,Shaoming Dong
Ultrahigh temperature and long-term ablation-resistant properties are critical and challenging for the utilization of materials as the thermal components of hypersonic vehicles. In this work, Y 2 O 3 reinforced C f /HfB 2 -SiC composites are designed and fabricated, which present superior ablation resistance with a mass recession rate of 2.10 mg/s and linear recession rate of 0.67 μm/s (with 3 wt% Y 2 O 3 addition) under long term ablation at a heat flux of 5.5 MW/m 2 (up to ∼ 2700 °C) for 300 s. The long-term ablation mechanisms of the composites are studied and revealed with the help of a detailed microstructure analysis and thermodynamic considerations. It is indicated that Y 2 O 3 reacts with both HfO 2 and SiO 2 , leading to the formation of a stable oxide layer with small HfO 2 -based grains skeleton dispersed in HfO 2 -Y 2 O 3 -SiO 2 glassy phase, subsequently improving the ablation-resistant performance of the composites. This work inspires new strategies for further optimization of ablation resistance of ultra-high temperature ceramic matrix composites.
研究领域:
材料科学
·
航空航天工程
✓ 已验证
产品关联
DOI
高影响因子
CORROSION SCIENCE
·
2015
·
IF 4.422
Dong Huang,Mingyu Zhang,Qizhong Huang,Liping Wang,Liang Xue,Xian Tang,Kejian He
C/C–ZrB 2 –ZrC–SiC composites were fabricated by polymer infiltration and pyrolysis (PIP) with a preform of C f /ZrB 2 . The ZrB 2 powders were sprayed onto fabric layer by layer before the fabric is needled. After introduction of resin carbon and ZrC–SiC into the preform, a ceramic coating on the matrix and fibres was formed in the composites. The plasma ablation test indicates that the composites possess a good ablation resistance after ablation for 180 s and 240 s. The SiO 2 –ZrO 2 barrier layer, high temperature Zr–Si–O glass layer and heat dissipation all contribute to the good ablation resistance of the composites.
研究领域:
材料科学
·
航空航天工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2022
·Vol. 23
·期 13
·7477
·
IF 6.208
Dun Wu,Jiaming Zhao,Junfeng Cheng,Chunlin Liu,Qiang Wang
The reliable and cost-effective production of high-performance film electrodes for hydrogen evolution reactions remains a challenge for the laser surface modification community. In this study, prior to a thermal imidization reaction, a small number of Fe3O4nanoparticles were vortexed into a poly(amic acid) (PAA) prepolymer, and the achieved flat composite film was then ablated by a 1064 nm fiber laser. After laser irradiation, the hierarchical architectures of carbon nanosheets decorated with Fe3O4nanoparticles were generated. Although pure polyimide (PI) film and laser carbonized PI film, as well as bare Fe3O4, showcase poor intrinsic catalytic activity toward alkaline hydrogen evolution reactions, our laser-derived Fe3O4/carbon nanosheet hybrid film demonstrated enhanced electrocatalytic activity and stability in 1 M KOH electrolyte; the overpotential(η10) reached 247 mV when the current density was 10 mA cm−2with a slight current decay in the chronoamperometric examination of 12 h. Finally, we proposed that the substitution of N to O in Fe−O sites of trans spinel structured magnetite would be able to modulate the free energy of hydrogen adsorption (ΔGH*) and accelerate water dissociation.Keywords:laser ablation;photothermal agent;hydrogen evolution reaction
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
POLYMER
·
2023
·
IF 4.6
Jinfeng Tian,Liwei Yan,Hao Zhang,Yuan Wang,Yuanbo Cai,Yisen Huang,Zhaohui Lu,Shuang Xia,Yang Chen,Zhengguang Heng,Huawei Zou,Mei Liang
To achieve uniform distribution of heteroatoms in silicone rubber, further simultaneously improving the flexibility and ablation resistance, polydimethylsiloxane with an interpenetrating zirconium-containing double-network (Zr-PDMS) was prepared. Compared to pure PDMS , the tensile strength and elongation-at-break of Zr-PDMS with interpenetrating double-network were increased by 615.33% and 124.23%, respectively, exhibiting significantly enhanced flexibility. Ablation analysis indicated that Zr-PDMS showed excellent anti-ablation performance, exhibiting obviously decreased mass ablation rate and charring rate. Most importantly, different from the crisp charred layers of pure PDMS as well as ZrO 2 blends, Zr-PDMS formed stable and coherent charred layers after ablation tests. The improvement correlated to the in-situ formation of tetragonal ZrO 2 in the char layer of Zr-PDMS, which could avoid the generation of defects in the ZrO 2 blends char layer were discussed in detail. This work provided a new strategy of high flexible silicon rubber with excellent ablative performance, which can be expected to be well applied in the hypersonic spacecrafts.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Yuan Li,Xiang Feng,Shipeng Zhu,Yifen Xu,Jingshu Wu,Jidong Hu,Yunhua Yang,Jian He,Zhihai Feng,Hongbo Guo
Carbon-fiber-reinforced SiBCN (C f /SiBCN composites) have gained significant attention due to their exceptional high temperature stability and outstanding oxidation resistance, which can be applied in Thermal Protection System (TPS). In this study, arc jet wind tunnel testing, which can effectively simulate the actual atmospheric flight environment and the associated fluid-solid surface interactions, is applied to evaluate the ablation behavior C f /SiBCN composites. The heat flux density during testing is 1.2-1.6 MW·m -2 and the heating temperature ranges from 1200 °C to 2000 °C. After ablation, the surface was covered with an intact oxide layer composed of BN(C) and borosilicate glass. The linear and mass recession rates were as low as 0.268 × 10 -3 mm·s −1 and 1.422 × 10 -3 mg·mm −2 ·s −1 at 1900 °C, respectively. A detail study demonstrate that the oxide layer of ablated product consists of α/β-SiC crystallites embedded within turbostratic B-N-C layers. In order to explore the ablation mechanism, the ablation performance of C f /SiC and C f /SiBCN composites at 2000 °C were compared and investigated.
研究领域:
材料科学
·
航空航天工程
·
复合材料
·
高温材料
·
热防护系统
✓ 已验证
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2025
·
IF 3.8
Yongsheng Liu,Guoxin Wei,Yawen Ma,Pengcheng Ma,Jianyong Tu,Jingxin Li,Yansong Liu,Shaolin Fu,Yejie Cao,Jian Chen,Yu Pan
In response to the urgent demand for ablation resistance and cost-effective thermal protection materials for hypersonic vehicles, this study employed a combined process of slurry injection and reactive melt infiltration to rapidly fabricate C f /ZrB 2 ‒SiC composites. The effects of infiltration temperature (1450°C‒1600°C) and holding time (0.5‒2.0 h) on the microstructure and mechanical properties were systematically investigated. Results demonstrate that at 1500°C, the competition mechanism between molten Si viscosity and reaction rate was balanced, achieving efficient pore filling. Composites processed at 1500°C for 1 h exhibited optimal mechanical properties, with a flexural strength of 234.08 MPa. As the holding time increased, elemental homogeneity improved in the matrix while mechanical properties decreased. The oxyacetylene ablation test (4.18 MW/m 2 ) showed: at 100 s, a dense ZrO 2 ‒SiO 2 oxide layer formed, resulting in ablation rates of 0.32 mg/s and 0.70 µm/s. After 300 s, thermal stress caused oxide layer spallation, elevating rates to 2.90 mg/s and 4.50 µm/s, triggering a new ablation cycle. The material demonstrates exceptional ablation resistance. This process provides a valuable reference for the low-cost fabrication of high-performance ultra-high temperature ceramic matrix composites.
研究领域:
材料科学
·
陶瓷基复合材料
·
航空航天工程
·
高温材料
·
制备工艺
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2024
·
IF 12.7
He Huang,Yiwu Pan,Hebing Wang,Can Wu,Jinliang Li,Xiangyu Jin,Wenbo Han,Changqing Hong,Xinghong Zhang
Lightweight ablative thermal insulation composites are attractive for thermal protection in extremely harsh environments. However, the flexibility called for in applications such as morphing aerocraft is yet to be satisfied, especially with toughness and ablative resistance. Herein, for the first time, a bio-inspired tendon-like buffer of silicone rubber was employed to gradiently connect the inorganic quartz fiber and organic phenolic resin aerogel in the composite to develop flexible and tough ablative thermal insulator. The composite exhibited reversible compressibility and bendability, wherein the stress was 1.46 MPa and 0.47 MPa at 60 % compressive strain and 9 % bending strain, respectively. Additionally, the tensile strength was up to 2.39 MPa. It was self-ceramifiable at high temperatures, resulting in the ablation rate as low as 0.002 mm/s, which is favorable for ablation resistance and thermal insulation. We investigated and illustrated the ceramizing mechanism in detail. The outstanding hydrophobicity with the water contact angle of 138.8° is profit to the safety and durability of thermal insulators. The multi-functional composite opens up a new path to develop deformable thermal-protection materials with flexibility, roughness, hydrophobicity, self-ceramization, and thermal insulation for flexible thermal protection in harsh environments.
研究领域:
材料科学
·
生物启发设计
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2021
·
IF 5.302
Tao Feng,Wanbo Hou,Mingde Tong,Hejun Li,Hongjiao Lin,Shifeng Wen
SiC nanowires (SiC nws ) modified SiC f /HfC-SiC composites were prepared by precursor infiltration and pyrolysis (PIP) and chemical vapor infiltration (CVI) methods. The microstructure, flexural strengths, impact and impact-ablation tests of the composites with and without SiC nws were investigated. The results showed that after introducing SiC nws , not only the retention rate of HfC ceramic produced by PIP was increased obviously, but also the fracture displacement of the modified composites was reduced due to the enhancement effect of SiC nws at interface between SiC fiber and matrix. After impact and impact-ablation, the strength retention of SiC nws modified composites was 91.6 % and 69.1 % respectively, higher than that of the composites without SiC nws (85.2 % and 54.8 %). As the impact resistance of the modified composites was improved by the pull-out and bridging of SiC nws , the ablation resistance of the impacted composites was enhanced as well.
研究领域:
材料科学
·
航空航天工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）