Silicon Carbide Ceramic

Application of Silicon Carbide Ceramics Based on Mechanical Properties

 

All forms of silicon carbide are hard materials occupying a relative position on Mohs' scale between alumina at and diamond at Because of its high thermal conductivity and low thermal expansion, silicon carbide is very resistant to thermal shock as compared to other refractory materials.Until the recent emergence of silicon carbide as a significant material for electronics, the mechanical properties of SiC-ceramics were the dominant commercial interest.
The formation of SiC powder is an essential pre-requisite to the manufacturing of many types of ceramic articles, which are subsequently obtained by shaping the manufactured silicon carbide powder. SiC powders with variable purity levels, crystal structures, particle sizes, shapes, and distributions can be prepared via several routes. Methods that have been examined include: growth by sublimation carbothermic reduction (the Acheson Process), conversion from polymers and gas phase chemical reactions.

 

Although brittle in nature, silicon carbide ceramics are leading materials for rotating and static components in many mechanical applications. They are characterized by low fracture toughness and limited strain-to-failure as compared to metals. The strength of a silicon carbide ceramic component is generally determined by pre-existing flaws introduced into the material during processing. The type, size, shape, and location of the flaws vary considerably and, consequently, so does the strength. Silicon carbide ceramics made by different techniques also have quite distinct mechanical properties. For example, sintered silicon carbide retains its strength at elevated temperatures and shows excellent time-dependent properties such as creep and slow crack growth resistance. In contrast, reaction-bonded SiC, because of the presence of free silicon in its microstructure, exhibits slightly inferior elevated temperature properties.
The extreme hardness of silicon carbide leads to its use as a coating when wear resistance is important, such as brake linings and electrical contacts, and in non-slip applications such as floor or stair treads, terrazzo tile, deck-paint formulations, and road surfaces. SiC is also commonly used in mechanical seals found in pumps, compressors, and agitators in a wide variety of demanding environments including highly corrosive ones. Silicon carbide is harder, yet more brittle, than other abrasives such as aluminum oxide. Because the grains fracture readily and maintain a sharp cutting action, silicon carbide abrasives are usually used for grinding hard, low tensile-strength materials such as chilled iron, marble, and granite, and materials that need sharp cutting action such as fiber, rubber, leather, or copper. Silicon carbide is also used in a loose form for lapping; mixed with other materials to form abrasive pastes, or used with cloth backings to form abrasive sheets, disks, or belts.

After more than 20 years of development and experience accumulation, The main production plants of Runjin technology and trade complex are as follows:
Qingdao Huaye New Material co., ltd.
Shandong Daqiao New Material co., Ltd.
Yangquan Wanglong Refarctories co.Ltd.
Anshan Aoan High Temperature Material Co., Ltd.
It's total assets value has reached 1.05 Billion RMB and currently employs 4078 personnel, including 544 refractory technical personnel and 3145 well trained workers
The annual production capacity has exceeded 30 thousands tons with comprehensive seven series refractories as following: Fire clay bricks, Alumina bricks, Con-casting refractory, Binder for refractory, Fine Ceramics, Graphite electrode, acid resistant brick, Silicon carbon crucible, Silicon carbon plate, Special building material, Cellulose ether, Super chamotte raw material and Synthesized mullite material, Magnesia raw material, etc. Products are applied to worldwide industries of metallurgy, building material, non-ferrous metal smelting, petrochemical, nonferrous, electronics, cement industry and so on. Approx. 68% products are supplied to metallurgy industry. China leading Steel group.-e.g.Baowu steel, Anshan steel, WISCO, SHOUGANG, TISCO, PANGANG, HBIS, SHAGANG, which belongs to same parent company are our main customers in domestic market.in oversea market, Zibo runjin is a refractory supplied of Arcelor - mittal, POSCO Guangyang steel, HYUNDAI steel, Nippon steel, JFE steel, US United Steel, Erdemir group., Danieli, SVAI and working together with famous refractory manufactures -e.g.Chosun refractories, ANH refractories and Krosaki refractories etc. Zibo runjin also has a good cooperation with world famous engineering companies .
our union has strong research and development capability, R&D centre is full responsible for test, research and product innovation, with 31 senior engineers, 96 engineers and 179 assistant engineers. Zibo runjin enables itself to be one of then leading refractory manufactures for supplying andalusite bricks for CDQ furnace, silicon bricks, AG con-casting refractory and so.
Zibo runjin has been persisting in a service philosophy of "Customers's Satisfaction is our eternal pursuit", taken "building a Worldwide first -class refractory manufactures" as the mission, and held "co-creation, co-operation, co-prograss, win-win"as its core values.Relying on management and technology accumulation during past many years, based on its over many years reputation as guarantee. Zibo runjin is doing its best to offer refractory system solutions with values added to achieve co-progress with our customers.

As one of the leading silicon carbide ceramic suppliers in China, we warmly welcome you to buy or wholesale high-grade silicon carbide ceramic in stock here from our factory. All our products are with high quality and competitive price.