Results 11 to 20 of about 112,198 (176)
Chemical vapor deposition of hafnium carbide and hafnium nitride [PDF]
Le Journal de Physique IV, 1993 The paper describes alternative high- temperature coatings for carbon fiber reinforced carbon (CFC) and carbon fiber reinforced silicon carbide (C/SiC) comparing CVD of hahium carbide and hafnium nitride. Hafnium carbide and hahium nitride layers were obtained in a thermally- stimulated CVD reactor by reaction of hafnium tetrachloride, methan and ...
Emig, G., Schoch, G., Wormer, O.
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Synthesis and Characterization of Hafnium Carbide Based Ceramics
Key Engineering Materials, 2014 Hafnium carbide powder was synthesized by sol-gel polycondensation of hafnium chloride with citric acid. The starting materials were dissolved in water and mixed homogeneously on a hot plate until a precomposite gel was formed. Pyrolysis of the obtained gel resulted in formation of monoclinic hafnia and amorphous carbon, which after subsequent heat ...
Matović, Branko +6 more
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Thermoelectric properties of boron carbide/HfB2 composites [PDF]
Materials for Renewable and Sustainable Energy, 2017 Boron carbide/hafnium diboride composites were prepared by spark plasma sintering of a mixture of hafnium diboride and boron carbide powders. Boron carbide was prepared with a 13.3 at.% composition of carbon, known as the ideal carbon content to maximize
Jon-L. Innocent +5 more
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Thermal Expansion of Hafnium Carbide [PDF]
Journal of the American Ceramic Society, 1960 Since hafnium carbide (HfC) has a melting point of 7029 deg. F, it may have many high-temperature applications. A literature search uncovered very little information about the properties of HfC, and so a program was initiated at the Lewis Research Center to determine some of the physical properties of this material.
Grisaffe, Salvatore J.
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Hafnium and tantalum carbides for high temperature solar receivers
Journal of Renewable and Sustainable Energy, 2011 Solar thermal technology is a safe, sustainable, and cost-effective energy supply. The present paper reports on the comparative high-temperature emissivity characterization of hafnium and tantalum carbide ultra-high temperature ceramics to evaluate their potential as novel absorbing materials for concentrating solar power plants.
Sciti Diletta +4 more
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Journal of Advanced Ceramics, 2023 Polymer-derived ultra-high-temperature ceramic (UHTC) nanocomposites have attracted growing attention due to the increasing demands for advanced thermal structure components in aerospace. Herein, hafnium carbide (HfC) whiskers are successfully fabricated
Yanqin Fu +7 more
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Nanomaterials, 2020 Colloidal cubic silicon-carbide nanocrystals have been fabricated, characterized, and introduced into metal–insulator–semiconductor and metal–insulator–metal structures based on hafnium oxide layers.
Andrzej Mazurak +3 more
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Low‐temperature synthesis of HfC/HfO2 nanocomposites from a commercial single‐source precursor
International Journal of Ceramic Engineering & Science, 2023 A liquid‐phase polymer‐to‐ceramic approach is reported for the synthesis of hafnium carbide (HfC)/hafnium oxide (HfO2) composite particles from a commercial precursor. Typically, HfC ceramics have been obtained by sintering of fine powders, which usually
Shakir Bin Mujib +2 more
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RETRACTED: Machining and corrosion studies on HfC reinforced ZE41 magnesium matrix composites
Materials Research Express, 2021 In this paper, Hafnium Carbide (HfC) reinforced ZE41 Magnesium Matrix Composites (MMCs) were prepared by using stir casting method. Using three different reinforcement percentages of HfC such as 5%, 10% and 15% by wt., ZE41-HfC MMCs were prepared.
P Sathish Kumar, P Gopal, T Senthilkumar
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Low-Temperature Synthetic Route for Hafnium Carbide Powder
, 2012 Hafnium carbide powder was synthesized by sol-gel polycondensation of hafnium chloride with citric acid. The starting materials were dissolved in water and mixed on a hot plate until a precomposite gel was formed.
Babić, Biljana M. +6 more
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