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Hi-Nicalon™ SiC Fiber

CAS Number
409-21-2
EC Number
206-991-8
Chemical Name
Silicon Carbide

Hi-Nicalon™ SiC Fiber is a multi-filament silicon carbide-type fiber manufactured by NGS Advanced Fibers Co., Ltd. (NGS) of Japan. NGS is known worldwide as the leading manufacturer and innovator of multifilament silicon carbide-type fibers. HINICALON™ is manufactured near-oxygen-free using electron-beam curing. The fiber is homogeneously composed of ultra-fine beta-SiC crystallites and carbon. The fiber has excellent strength and modulus properties, and has higher thermal stability than NICALON™.

Properties

Physical Form
  • Fabric
  • Fiber
  • Solid

Product families

Composite Materials — Reinforcements
  • Other Reinforcements

Other characteristics

Brand
Hi-Nicalon
Features

Chemical Resistance, Chemical Resistant, Good Thermal Stability, High Modulus, High Strength, Oxidation Resistant, Thermal Stability

Synonyms

Carbon Silicide, SiC, Silicon (IV) Carbide, Silicon Monocarbide

Reinforcement Form
Satin Weave Fabric
Reinforcement Material
Other Reinforcement Material
Usage

HI-NICALON™ ceramic fiber is primarily designed to be used as reinforcements for high temperature ceramic composites. It can also be used as a reinforcement for plastic, and metal matrix composites. Surface treatments are normally recommended to facilitate processing and maximize composite properties. The fiber can also be used to form fibrous products such as high temperature insulation, filters, etc. Its resistance to chemical attack allows it to be used in harsh environments. Typical fiber properties are shown in Table 1.. HI-NICALON™ fiber can be incorporated as the reinforcement for a variety of ceramic composites. Standard CMC processing techniques, such as sol-gel, chemical vapor infiltration, melt infiltration, or polymer infiltration can be used, depending on the user's needs and capabilities. Candidate matrix materials include silicon carbide, silicon nitride, alumina, glasses, and others. Fiber surface treatments are generally removed before making CMC's, such as by heating to 600⁰C for 30 minutes. Fiber interface coatings, such as BN, are generally applied to the fiber to achieve optimum CMC properties. The specific fiber type and the specific CMC processing technique is best determined by the user.

Markets
  • Automotive & Transportation
  • Building & Construction
  • Industrial
Application

Weaving, Braiding, and Coating As textile grade yarn, HI-NICALON™ fiber can be readily incorporated into a large variety of woven tapes, braids, etc. Specialty interface coatings such as BN (often recommended for optimum CMC mechanical properties) may be applied to the tow or cloth. A network of US contractors exists to respond to customer needs. Contact COI Ceramics to discuss specific needs and receive further information.

Technology
Composite Materials
Limited Warranty

COI Ceramics (COIC) believes that the information contained herein is an accurate description of the typical properties and uses of the products, but it is your responsibility to test the material to determine its performance and safety for your application. COIC's sole warranty is that the product meets current sales specs. Specification writers should contact COIC for sales specifications. COIC specifically disclaims any other express or implied warranty.

Composites End Use
Structural Components
Material Features
  • Chemical Resistant
  • Good Thermal Stability
  • High Modulus
  • High Strength
  • Oxidation Resistant

Technical data

Table 1 of 1

11 rows
CharacteristicValueUnitMethod
Fiber Denier1800——
Density2.65g/cc—
Composition62:37:01wt %—
C/Si Automic Ratio1.39—Si:C:0
Tex190-210g/km—
Filament Diameter (nominal)14μm—
Tensile Strength2.5GPa—
Tensile Modulus250GPa—
Volume Resistivity (nominal)3Ω-cm—
Sizing Amount0.5-2.0wt %—
Oxygen Contentmax. 1.2wt %—

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