Improvement of mechanical properties of HfB2-based composites by incorporating in situ SiC reinforcement through pressureless sintering [PDF]
Scientific Reports, 2021 HfB2, Si, and activated carbon powders were selected to fabricate 0–30 vol% SiC reinforced HfB2-based composite. Pressureless sintering process was performed at 2050 °C for 4 h under a vacuum atmosphere.
S. Ghadami +3 more
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Journal of Asian Ceramic Societies, 2023 Ultra-high-temperature ceramics are required for many aerospace applications. In this work, HfB2-30 vol.% HfC and HfB2-26 vol.% HfC-43 vol.% MoB high-density composites were prepared by one-step in-situ reactive spark plasma sintering (R-SPS) using Hf ...
Weixia Shen +2 more
exaly +3 more sources
Single-Crystal HfB2 Nanorod-Induced Synergy in HfB2–SiC Ultrahigh-Temperature Ceramics: Enhancement of Mechanical and Ablation Resistance [PDF]
ResearchAchieving a synergistic improvement in the toughness and oxidation resistance of boride ultrahigh-temperature ceramic composites remains a challenge for advancing new-generation hypersonic vehicles.
Kewei Li +9 more
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LC-MS/MS Analysis of Fumonisin B1, B2, B3, and Their Hydrolyzed Metabolites in Broiler Chicken Feed and Excreta [PDF]
Toxins, 2022 An accurate, reliable, and specific method was developed for the quantitative determination of fumonisins B1, B2, B3, and their hydrolyzed metabolites, HFB1, HFB2, and HFB3, in broiler chicken feed and excreta using ultra-performance liquid ...
Shuo Zhang +5 more
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Improved oxidation behavior of Hf0.11Al0.20B0.69 in comparison to Hf0.28B0.72 magnetron sputtered thin films [PDF]
Scientific ReportsThe oxidation resistance of Hf0.28B0.72 and Hf0.11Al0.20B0.69 thin films was investigated comparatively at 700 °C for up to 8 h. Single-phase solid solution thin films were co-sputtered from HfB2 and AlB2 compound targets. After oxidation at 700 °C for 8
Pauline Kümmerl +13 more
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Functionally Graded Oxide Scale on (Hf,Zr,Ti)B<sub>2</sub> Coating with Exceptional Ablation Resistance Induced by Unique Ti Dissolving. [PDF]
Adv Sci (Weinh)A functionally graded oxide scale comprising a dense top layer and an underlying fine‐grained layer with a grain size gradient forms on a multicomponent (Hf,Zr,Ti)B2 coating through Ti content optimization. The former is a superior oxygen barrier, and the latter ensures strain tolerance, collectively manifesting the coating's exceptional ablation ...
Lv J +9 more
europepmc +2 more sources
Stability Evaluation of Candidate Precursors for Chemical Vapor Deposition of Hafnium Diboride (HfB2) [PDF]
ACS Omega, 2021 Jessica M. Rimsza +3 more
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Consolidation and Oxidation of Ultra Fine WC-Co-HfB2 Hard Materials by Spark Plasma Sintering [PDF]
Archives of Metallurgy and Materials, 2021 In this study, a novel composite was fabricated by adding the Hafnium diboride (HfB2) to conventional WC-Co cemented carbides to enhance the high-temperature properties while retaining the intrinsic high hardness.
Hyun-Kuk Park +4 more
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Ablation resistance of graphite coated by spark plasma sintered ZrB2–SiC based composites
Boletín de la Sociedad Española de Cerámica y Vidrio, 2022 ZrB2–SiC–HfB2–WC coating applied by spark plasma sintering led to the ablation resistance improvement of graphite substrate. The influence of HfB2/WC ratio was investigated on the ablation resistance produced by an oxyacetylene flame. The microstructural
Sadegh Ali Akbarpour Shalmani +3 more
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بهینهسازی پارامترهای مؤثر بر اکسیداسیون سرامیک دی بوراید زیرکونیوم [PDF]
نشریه مهندسی متالورژی و مواد, 2020 در این پژوهش به بررسی پارامترهای مؤثر بر اکسیداسیون سرامیک دی بوراید زیرکونیوم پرداخته میشود. دما، زمان و فشار به همراه افزودنیهای مختلف (SiC, Cf, MoSi2, HfB2 ZrC) مورد بررسی قرار گرفتند. طراحی آزمایش به روش تاگوچی انجام شد.
زهره بلک +2 more
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