Silicon carbide ceramics offer excellent wear resistance, high strength and toughness. Calix provides both black and white Reaction Bonded Silicon Carbide (RBSiC) as well as Sintered Alumina Ceramic tiles and lining to meet severe wear environments.
SEM images demonstrate that SiC nanoparticles were present within an alumina matrix, acting to suppress abnormal grain growth while improving sintering density and fracture properties.
Wear Resistance
Silicon carbide ceramic is one of the hardest refractory ceramics on the market and also one of the most versatile, with chemical resistance, oxidation resistance, high temperature strength and thermal shock resistance among its many useful properties. Silicon carbide makes an excellent choice for applications such as pipe lining in harsh environments.
Selecting an appropriate wear-resistant material for your equipment depends on a number of variables, including its size, shape and weight limits as well as operating conditions. Also take into account what chemicals will come into contact with it; different materials offer differing degrees of chemical resistance – choosing one tailored specifically to your application can reduce maintenance expenses while prolonging its lifecycle.
Reaction bonded silicon carbide ceramics (RBSiC) offer outstanding resistance against erosion, corrosion and abrasion – perfect for use in cyclones, tubes, chutes, hoppers, pipes and production systems. RBSiC ceramics have also found extensive applications within steel industries, coal processing industries, chemical industries and raw material-making fields alike – as they can be made into various shapes such as liners or blocks.
Corrosion Resistance
Silicon carbide (SiC) possesses excellent oxidation resistance, corrosion resistance and wear resistance properties. Furthermore, SiC’s hexagonal crystal structure contributes to its mechanical properties that ensure high strength and hardness for increased wear resistance and toughness.
Acids and alkalis pose no threats, even in harsh environments, reducing maintenance costs and safety risks, while prolonging equipment lifespan.
Duratec Alumina Ceramic Weldable Tile provides a safe and reliable option for chemical pipelines, pumps and valves. This material features excellent abrasion resistance and impact resilience along with temperature stability for extended service life compared to basalt and wear resistant alloy cast steel linings.
Recent research demonstrated that laser processing alumina and silicon carbide tiles prior to adhesive bonding significantly increased resistance of ceramic armor panels tested to STANAG 4569 levels III and IV against ballistic impacts from 7.62 and 14.5 mm projectiles tested, attributing this improvement to higher concentration of hydroxyl groups on their surfaces, leading to stronger adhesive bonds between ceramic pieces.
High Temperature Resistance
Ceramic materials boast impressive thermal shock resistance, which enables them to withstand rapid temperature changes without succumbing to fracture. This quality makes ceramics especially advantageous in environments with extreme high temperatures and humidity swings, where low coefficient of expansion and uniform microstructure ensure thermal stress resistance and thus reduced fracture risks.
Ceramics’ high density allows them to withstand high temperatures without succumbing to oxidation, while also being resistant to harsh environments like acids and salt solutions.
Ceramics stand out as excellent dielectric materials and can serve as effective insulators, due to the free passage of electrons across their surfaces, while metals and plastics tend to lose charge as heat.
Quasi-static tests of joints demonstrated that bonds between an epoxy adhesive and laser-treated alumina or silicon carbide ceramic were significantly stronger than those formed between controls, grit blasted or air refired samples, suggesting greater impact shock resistance at ceramic interfaces. Postfailure analysis confirmed this observation by showing the adhesive failed at its interface indicating ceramic was protected by its bond.
Flexural Strength
Flexural strength between ceramic materials is quite comparable, although alumina has greater bending capability than porcelain. This property should be considered when installing tiles and linings into pipes, chutes, hoppers and tubes – this requires considerable engineering expertise and design skills to ensure safe installation and operation of your ceramic liner.
Postballistic testing inspection of fragments from control alumina and laser surface-treated silicon carbide panels revealed that their ceramic surfaces had become exposed, with only minor adhesive remains remaining, after air refiring (Figure 12). Laser-surface treated samples were covered in adhesive, suggesting that any failure between ceramic and adhesive interface was within the adhesive layer itself. This results support previous quasi-static experiments which demonstrated that laser treatment improves adhesive bond strength of alumina and silicon carbide ceramics to epoxy. Furthermore, laser surface-treated samples performed better during ballistic tests – they could withstand more shots with minimal cumulative damage accumulation; potentially opening doors for use as armor applications or military applications.
Creep Resistance
In quasi-static experiments, both control alumina and silicon carbide were subjected to adhesive bond strength tests with and without various surface preparation treatments, including grit blasting to roughen surfaces and promote mechanical interlocking with adhesive; laser ablation can induce chemical changes on surfaces for improved wettability; both treatments were employed before bonding experiments began on treated and untreated panels respectively; SEM analysis confirmed the locus of failure at the interface between ceramics and adhesive.
Alumina and silicon carbide ceramic tiles and linings can extend equipment lifespan in high wear environments by protecting against abrasion, corrosion and chemical erosion. Available in various shapes including cylinderical, weldable and hexgonal designs with tight dimensional tolerances that maintain mechanical strength at elevated temperatures; additionally they are chemically inert with regards to many chemicals making them the perfect lining material for applications involving high wear such as cyclones, tubes, chutes hoppers and pipes.