us5265118a - silicon carbide whisker production

Occupational exposure limits for cumene,

Silicon carbide whisker (SiCW) [CAS No. 409‐21‐2, 308076‐74‐6] is a cylindrical‐shaped, single‐crystal fiber with a width of 3 μm that fulfils the definition of WHO fibers (particles 5 μm with a width of 3 μm and an aspect ratio of 3).

The Production and Mechanical Properties of Silicon

The resulting silicon carbide and alumina whisker-reinforced epoxy composites have low den sities, high flexural moduli and good wear resistance. The specific stiffnesses of these two composites with 16-18% weight fraction of whiskers were 1.59 and 1.50 (GPa/g/mm 3 ) respectively.

Synthesis of silicon carbide whiskers using the vapour

Silicon carbide whisker production in a fixed bed is then possible using a (VLS) mechanism in a silicon-rich droplet and may be controlled without the addition of transition metals, thus improving the purity. Keywords Hydrogen Iron Polymer Silicon Carbide

Production of fertile transgenic maize plants by silicon

Production of fertile transgenic maize plants by silicon carbide whisker‐mediated transformation Production of fertile transgenic maize plants by silicon carbide whisker‐mediated transformation Frame, Bronwyn R.; Drayton, Paul R.; Bagnall, Susan V.; Lewnau, Carol J.; Bullock, W. Paul; Wilson, H. Martin; Dunwell, James M.; Thompson, John A.; Wang, Kan 1994-12-01 00:00:00 A simple and

The Production and Mechanical Properties of Silicon

The resulting silicon carbide and alumina whisker-reinforced epoxy composites have low den sities, high flexural moduli and good wear resistance. The specific stiffnesses of these two composites with 16-18% weight fraction of whiskers were 1.59 and 1.50 (GPa/g/mm 3 ) respectively.

Synthesis of alumina

article{osti_7152794, title = {Synthesis of alumina-coated SiC whiskers for production of SiC whisker-reinforced alumina composite materials}, author = {Kapolnek, D}, abstractNote = {Thick coatings of hydrated basic aluminum sulfate, an alumina precursor, were precipitated on the surfaces of SiC whiskers from an aqueous solution.

Growth of SiC Whiskers onto Carbonizing Coir Fibers by

To reduce environmental pollution and waste of resources, it is very important to recycle valuable materials in silicon slurry waste (SSW). We report a novel method for the rapid preparation of SiC nanowhiskers by spark plasma (SP) assisted thermal treatment using SSW as the silicon source. In the preparation process, coir fibers were used as the carbon source and whisker growth substrate. At

Development of a Commercial Process for the Production

The principal investigator has scaled silicon carbide whisker production at American Matrix andmore This project is a proof-of-concept effort to apply some of the recent technology to the problems listed above in the fibril growth process.

Development of a Commercial Process for the Production

The principal investigator has scaled silicon carbide whisker production at American Matrix andmore This project is a proof-of-concept effort to apply some of the recent technology to the problems listed above in the fibril growth process.

High Yield Silicon Carbide Whiskers from Rice Husk Ash

2019/10/19A new stacking bed method to prepare high-quality silicon carbide whiskers (SiCws) with high yield has been proposed. To provide a steady and high concentration SiO atmosphere during the carbothermal reaction, the mixture of graphene and rice husk ash is used as a SiO generator, which is different from the traditional methods using sole silicon sources. The as-prepared whiskers, growing

Method of preparing whiskers of silicon carbide and

When silicon carbide whiskers are produced by heating silica to high temperature in the presence of carbon, the product is mainly powder- or lump-form silicon carbide. The growth of whiskers can be encouraged by providing a catalyst for whisker growth and voids in the carbon mass in which the whiskers can grow.

Development of a Commercial Process for the Production of Silicon

2001/4/9The Production of Silicon Carbide Fibrils R. D. Nixdorf, ReMaxCo Technologies, Inc. 1010 Commerce Park Drive, Suite I Oak Ridge, TN 37830 ABSTRACT Phase I of this project demonstrated a new technology for silicon carbide fibril growth that would remove

Production of SiC and Si3N4 whiskers in C+SiO2 solid

2001/12/1Silicon carbide and silicon nitride whiskers were produced in silica and carbon solid mixtures under nitrogen-containing atmospheres. It was confirmed that the introduction of hydrogen in the atmosphere controls the production of both Si 3 N 4 and SiC, lowering the limiting temperature for SiC production.

Synthesis and characterization of nanostructured

2014/9/1Silicon carbide whisker is a promising reinforcement material for metal and ceramic matrix composites. In this paper, nanostructured β-SiC whiskers were synthesized from an organic–inorganic hybrid precursor via a carbothermal reduction of silica by carbonized phenolic resin.

Production of fertile transgenic maize plants by silicon carbide whisker

Production of fertile transgenic maize plants by silicon carbide whisker-mediated transformation Bronwyn R. Frame 1, Paul R. Drayton 2, Susan V. Bagnall 1, Carol J. Lewnau 1, W. Paul Bullock 1, H. Martin Wilson 1, James M. Dunwell 2

Silicon Carbide Whisker

Silicon carbide whisker used as reinforcement materials for ceramics, metals and plastics Features Tateho successfully commercialized silicon carbide whiskers and silicon nitride whiskers from 1981 to 1982, by making full use of our crystal growth technology and firing control technology.

Development of a Commercial Process for the Production

article{osti_835706, title = {Development of a Commercial Process for the Production of Silicon Carbide Fibrils}, author = {Nixdorf, R D}, abstractNote = {The current work continues a project completed in 1999 by ReMaxCo Technologies in which a novel, microwave based, VLS Silicon Carbide Fibrils concept was verified.

Silicon carbide

Silicon carbide (SiC), also known as carborundum / k ɑːr b ə ˈ r ʌ n d əm /, is a semiconductor containing silicon and carbon.It occurs in nature as the extremely rare mineral moissanite.Synthetic SiC powder has been mass-produced since 1893 for use as an abrasive..

Plasma production of silica whiskers

1988/1/1In this work, silicon monoxide vapour was condensed to produce silica whiskers, which contained silicon carbide. The silicon monoxide was generated in a plasma by reacting briquettes containing silica and carbon according to the following reaction: The effects of the following variables on the production of silicon monoxide were studied:

A study of silicon carbide synthesis from waste serpentine

Technical Note A study of silicon carbide synthesis from waste serpentine T.W. Cheng *, C.W. Hsu Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, Taiwan

Silicon carbide

Silicon carbide (SiC), also known as carborundum / k ɑːr b ə ˈ r ʌ n d əm /, is a semiconductor containing silicon and carbon.It occurs in nature as the extremely rare mineral moissanite.Synthetic SiC powder has been mass-produced since 1893 for use as an abrasive..

Silicon Carbide Whiskers For Ceramic Matrix Composites

Properties of Silicon Carbide Whisker SiC Whisker (SiC-w) is a highly oriented single crystal fiber with a diameter ranging from nanometer to micrometer. The crystal structure is similar to that of diamond. There are few chemical impurities in the crystal and no grain

A study of silicon carbide synthesis from waste serpentine

Technical Note A study of silicon carbide synthesis from waste serpentine T.W. Cheng *, C.W. Hsu Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, Taiwan

Synthesis of silicon carbide whiskers using the vapour

Silicon carbide whisker production in a fixed bed is then possible using a (VLS) mechanism in a silicon-rich droplet and may be controlled without the addition of transition metals, thus improving the purity. Keywords Hydrogen Iron Polymer Silicon Carbide

Synthesis of silicon carbide whiskers using the vapour

Silicon carbide whisker production in a fixed bed is then possible using a (VLS) mechanism in a silicon-rich droplet and may be controlled without the addition of transition metals, thus improving the purity. Keywords Hydrogen Iron Polymer Silicon Carbide

An Introduction of Silicon Carbide Whisker

Cubic silicon carbide whisker whiskers, and belong to a diamond crystal, is now synthesized whiskers highest hardness, modulus maximum, maximum tensile strength, heat resistance temperature of the highest whiskers products, divided the α type and β type

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