N-type Silicon Carbide Crystal

Uses of  silicon carbide

Automobile parts

The Porsche Carrera GT's carbon-ceramic (silicon carbide) disc brake

Silicon-infiltrated carbon-carbon composite is used for high performance "ceramic" brake discs, as it is able to withstand extreme temperatures. The silicon reacts with the graphite in the carbon-carbon composite to become carbon-fiber-reinforced silicon carbide (C/SiC). These discs are used on some road-going sports cars, supercars, as well as other performance cars including the Porsche Carrera GT, the Bugatti Veyron, the Chevrolet Corvette ZR1, the McLaren P1, Bentley, Ferrari, Lamborghini and some specific high-performance Audi cars. Silicon carbide is also used in a sintered form for diesel particulate filters.[43] It's also used as an oil additive to reduce friction, emissions, and harmonics.

Foundry crucibles

SiC is used in crucibles for holding melting metal in small and large foundry applications.

Lectric systems

The earliest electrical application of SiC was in lightning arresters in electric power systems. These devices must exhibit high resistance until the voltage across them reaches a certain threshold VT at which point their resistance must drop to a lower level and maintain this level until the applied voltage drops below VT.

It was recognized early on that SiC had such a voltage-dependent resistance, and so columns of SiC pellets were connected between high-voltage power lines and the earth. When a lightning strike to the line raises the line voltage sufficiently, the SiC column will conduct, allowing strike current to pass harmlessly to the earth instead of along the power line. The SiC columns proved to conduct significantly at normal power-line operating voltages and thus had to be placed in series with a spark gap. This spark gap is ionized and rendered conductive when lightning raises the voltage of the power line conductor, thus effectively connecting the SiC column between the power conductor and the earth. Spark gaps used in lightning arresters are unreliable, either failing to strike an arc when needed or failing to turn off afterwards, in the latter case due to material failure or contamination by dust or salt. Usage of SiC columns was originally intended to eliminate the need for the spark gap in lightning arresters. Gapped SiC arresters were used for lightning-protection and sold under the GE and Westinghouse brand names, among others. The gapped SiC arrester has been largely displaced by no-gap varistors that use columns of zinc oxide pellets.

Hmois Moissanite Gemstones, offered by us, is available as Black Moissanite Gemstones and fancy Colored Moissanite Gemstones as well as White/near Colorless Moissanite. We offer Moissanite stones in different sizes, shapes and designs according to the requirements of the client. Our Moissanite stones is reckoned for its unparalleled luster, hardness and finish. Available in different sizes, our Moissanite stones can be availed at market leading prices.

Product	4H-SiC & 6H-SiC
Grade	Grade l	Grade ll
Diameter	50.8mm±0.38mm
Thickness	8mm- or Customer Specification
Primary Flat Orientation	Perpendicular to <11-20>±5.0︒
Primary Flat Length	15.88mm±1.65mm
Secondary Flat Orientation	90°CW from Primary   flat±5.0°
Secondary Flat Length	8.0m±1.65mm
Positive Angle chip direction	{0001}±0.28
Off axis Wafer Orientation	4.0°toward<11-20>±0.5° 8.0°toward<11-20>±0.5°
Edge Exclusion	1.0㎜
TTV/Bow	<15um/<15um
Micropipe Density	<10piece cm-2	<30piece /cm-2
Resistivity	Conductive	0.01-0.03×cm	0.01-0.1×cm
	Semi-insulating	>105×cm
Surface Finish	Both Polished (Si face Ra <0.2nm) or Customer Specification

Use of our moissanite crystal, rough moissanite

Machine of our moissanite crystal, rough moissanite

Factory of our moissanite crystal, rough moissanite

Exhibition of our company

Bangkok Gem&Jewelry Fair 62nd

Package and shipment and payment

 Why choose us:

（1. More than 100 staff and have more than 21 years’s experience in jewelry

（2. Package: we have high quality and beautiful package gift box

（3. we are specialized in manufacturing synthetic gemstones and jewelry according to customers request. All kinds of colors, sizes and shapes can be customized. There are above 1000 skikllful workers and we have strict quality control with good stable quality!

（4.  we have two factory on is in Taiyuan and other one is in Gujiao

Taiyuan manufacture synthetic gemstones moissanite and CVD and HTHP products

Gujiao manufacture all kinds of the moissanite jewelry

（5. Unique styles, excellent quality and considerate services win general customers’ unanimous recognition and praise. We adhere to the management idea of regarding quality as life, innovation as driving force and customer first!

Moissanite  Maintenance

Although Moissanite is the hardest substance in nature, it is also very brittle, and it is easy to break when it is hit or crushed by external force. Therefore, when doing sports, heavy physical labor, do not wear Moissanite jewelry, so as not to accidentally collide with hard objects, causing Moissanite to cause permanent and irreparable defects.

Care for the Mosang diamond ring, take good care of it

The Moissanite ring should be removed when doing heavy work, so as to avoid the deformation of the ring and the Mosang stone.Maintenance Moissanite ring, professional cleaning: Moissanite stone is very lipophilic and easy to contaminate oil, so apply hand cream and remove Moissanite when washing dishes. It can't be worn while swimming, and the chloride bleach in the water will erode the Moissanitering. It is recommended to choose professional jewelry cleaners and instrument cleaning. Maintenance Moissanite Ring, Classified Storage: Classify and store different gems to prevent friction between then.

Brand story

Hmois

In 1893, The French Nobel Prize winner Dr. Henry Moissan found these sparkling pieces of Sic. 

In 1905, To order Dr. Henri moissan, the newly found gem was named Moissanite

Our company in order to celebrate the Dr. Henry Moissan, So named our brand to Hmois

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