pure silicon carbide mirror

Lightweighted telescope mirrors: Outstanding properties of

complexity. Besides, SiC mirrors require large wall thickness and open back structure. Therefore, to address these issues, a carbon fiber reinforced Silicon Carbide composite, known as C-SiC, has been created. This composite allows extremely complex 3D structures design, much smaller wall thickness

Sintered Silicon Carbide for space telescope mirrors and

Sintered Silicon Carbide for space telescope mirrors and structures Ref-Nr: Technology abstract. Boostec Mersen has developed an expertise in innovative polycrystalline technical ceramic of alpha SiC type. This innovative material has interesting non space appliion such as continuous-flow reactors and heat exchangers, mechanical seals and

New-technology silicon carbide (NT-SiC): demonstration of

11/01/2005· Newly developed high-strength reaction-sintered silicon carbide, called New-Technology Silicon Carbide (NT-SiC) is an attractive material for lightweight optical mirror with two times higher bending strength than other SiC materials. The material has advantages in its fabriion process.

Mirror Material Properties Compiled for Next Generation

Silicon Dioxide Glass (Fused Silica & Fused Quartz). Fused silica is the common name for the polycrystalline form of silicon dioxide, a common glass material. Silicon dioxide is also known as quartz, but quartz should not be confused with fused silica because its structure is crystalline and its

Telescope Making Supplies

Silicon carbide is an extremely sharp, synthetic abrasive which approaches the diamond in hardness. It is made by mixing finely ground petroleum coke with pure glass sand. The mixture is loaded into a crucible and heated by electric arc to temperatures in excess of 2000°C.

NT-SiC (new technology silicon carbide): appliion for

18/08/2005· Additional advantages are in the fabriion process. The sintering temperature is significantly lower than that of pure silicon carbide ceramics and its sintering shrinkage is smaller than one percent. These advantages will provide rapid progress to fabrie large structures and will enable that one meter mirror will put practical use.

Silicon (Si) mirrors for CO2 lasers for low cost reflectors

The silicon carbide mirrors produced in this way have been used commercially for a wide range of appliions, such as remote sensing satellites (see Figure 2). In summary, a coination of lost foam, cast silicon - carbides (green bodies), sintering reactions and joining technology - formed reactions (red bodies) is used to produce a single crystal silicon mirror with honeyco structure (blue body) for use …

Silicon carbide mirrors | AMOS

AMOS developed the expertise of polishing Silicon carbide mirrors, mostly for space appliion. Silicon Carbide is a very light and very strong material, well-suited for large mirrors.

SILICON CARBIDE - MEDSI

SILICON CARBIDE • Single crystal (intrinsic) - widely used for SR optics • Many uses: can be superpolished UHV compatible large GI mirrors with internal or indirect cooling bent optics (epoxy on metal endpieces) no chips! - radius < 1000 times thickness • Best are pure fused silica and ULE™ (silica- 7.5% titania)

Sintered Silicon Carbide for space telescope mirrors and

This process yields a pure silicon carbide with no traces of free silicon. Its low residual porosity is fine and completely closed, i.e. the material is perfectly water tight. The very strong covalent Si-C bond gives this innovative material exceptional physical properties that are particularly stable over time: high stiffness and hardness, low

Silicon carbide - Wikipedia

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.Grains of silicon carbide can be bonded together by sintering to form very hard ceramics that are widely used in appliions

China 2020 Good Quality Refractory Silicon Carbide Ceramic

2020 Good Quality Refractory Silicon Carbide Ceramic - Pure Silicon – Niceway Detail: Silicon ring&Silicon disk. Made of high-purity silicon material, precision machining, mirror polishing, and strict semiconductor-level cleaning. It is mainly used for clamping chips in semiconductor equipment.

New-technology silicon carbide (NT-SiC): demonstration of

Newly developed high-strength reaction-sintered silicon carbide, called New-Technology Silicon Carbide (NT-SiC) is an attractive material for lightweight optical mirror with two times higher bending strength than other SiC materials. The material has advantages in its fabriion process. The sintering temperature is significantly lower than that of pure silicon carbide ceramics and its

CVD Silicon Carbide (CVD SIC) | Morgan Technical Ceramics

Mirror-like surface finishes; CVD silicon carbide traditionally has been used in semiconductor processing appliions, such as RTP and oxide etch chaer components, which can take advantage of the excellent thermal shock resistance of silicon carbide and its resistance to erosion by high energy plasmas. Low resistivity Performance SiC

SiC Optics - Aperture Optical Sciences - Optical Components

Silicon carbide is also used in commercial appliions such as lightweight scan mirrors, semiconductor wafer handling, and reflective imaging systems. AOS has pioneered an industry-leading process for manufacturing SiC optics for industry, defense, and research appliions. We produce more SiC optics than anyone else in North America.

PureSiC Silicon Carbide - Semiconductor - 01195I

CVD Silicon Carbide for Semiconductor Manufacturing Specifically Developed for Silicon Wafer Processing High-purity, full-density PureSiC CVD silicon carbide was specifically developed to meet the demanding standards of silicon wafer processing. • Ultra-pure material – With a purity greater than 99.9995% and no porosity, PureSiC CVD silicon

Sintered Silicon Carbide for space telescope mirrors and

Sintered Silicon Carbide for space telescope mirrors and structures Ref-Nr: Technology abstract. Boostec Mersen has developed an expertise in innovative polycrystalline technical ceramic of alpha SiC type. This innovative material has interesting non space appliion such as continuous-flow reactors and heat exchangers, mechanical seals and

SBIR-17-1-S2.03-9958 | Abstract - Additively Manufactured

For both beryllium and pure silicon carbide as a mirror substrate, the cost factor and risk is quite high from a schedule perspective due to both these materials being very hard and brittle. Therefore, machining anomalies is a much higher risk than other metal mirror substrate materials.

Silicon Carbide Substrates & Wafers Polishing Service

Silicon Carbide (SiC) Polished to Mirror Finish CVD Silicon Carbide theoretically dense and intrinsically pure, is available as lapped or polished substrates and wafers from 2" diameter up to 300mm diameter with surface finishes to better than 10 angstroms, while maintaining a 1/4 wave flatness depending on thickness and size.

New-technology silicon carbide (NT-SiC): demonstration of

Newly developed high-strength reaction-sintered silicon carbide, called New-Technology Silicon Carbide (NT-SiC) is an attractive material for lightweight optical mirror with two times higher bending strength than other SiC materials. The material has advantages in its fabriion process. The sintering temperature is significantly lower than that of pure silicon carbide ceramics and its

Development of silicon carbide mirrors: the example of the

21/11/2017· Silicon Carbide has been selected for the SOFIA Secondary mirror to provide the lower mass and the higher stiffness. The final image quality corresponds to a point spread image of 1.5 arcseconds (80% energy) at 0.6 μm.

New-technology silicon carbide (NT-SiC): demonstration of

11/01/2005· Newly developed high-strength reaction-sintered silicon carbide, called New-Technology Silicon Carbide (NT-SiC) is an attractive material for lightweight optical mirror with two times higher bending strength than other SiC materials. The material has advantages in its fabriion process.

Silicon Mirrors – ULO Optics

Silicon lenses are manufactured using monocrystalline ‘optical grade’ (transmissive) material. Dimensional tolerances Standard ULO Optics products are made to the following specifiions and tolerances: Diameter : +0 / -0.1mm Thickness : ± 0.1mm Flatness : Within λ/40 over any 25mm test dia. Parallelism : Within 0.05mm ETV Coating options Si Mirrors

silicon carbide mirror, silicon carbide mirror Suppliers

Silicon carbide for soft cloth mirror abrasive metal polishing grinding wheel. US $58.47-$64.09 / Piece. 10 Pieces (Min. Order) 2 YRS. Wuxi Yingwang Abrasive And Grinding Machine Co., Ltd. (4) 100.0%. " Excellent service " (2) Contact Supplier.

Thin film metallic glass broad-spectrum mirror coatings

01/09/2020· The co-sputtering of Al 90 Y 5 Ni 5 (at.%) with pure Zr and Zr 44 Cu 40 Ag 8 Al 8 (at.%) alloy compositions were selected to apply thin film mirror coatings by PVD via magnetron sputtering on silicon carbide substrates.

Silicon carbide - Wikipedia

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.Grains of silicon carbide can be bonded together by sintering to form very hard ceramics that are widely used in appliions

China 2020 Good Quality Refractory Silicon Carbide Ceramic

Silicon ring&Silicon disk Made of high-purity silicon material, precision machining, mirror polishing, and strict semiconductor-level cleaning. It is mainly used for clamping chips in semiconductor equipment. Main specifiions are 6 ", 8", 12 ". Main Features: The coefficient of thermal expansion is the same as wafer Completely single material Hard at high temperature and not easy yo deform

Sintered Silicon Carbide for space telescope mirrors and

This process yields a pure silicon carbide with no traces of free silicon. Its low residual porosity is fine and completely closed, i.e. the material is perfectly water tight. The very strong covalent Si-C bond gives this innovative material exceptional physical properties that are particularly stable over time: high stiffness and hardness, low