Extrusion describes the process where a metal such as copper or brass is forced through an extrusion die with a smaller cross-section. This deforms the material, causing a lengthening of its granular structure and forcing it to adopt a new cross-section uniformly across the entire manufactured workpiece. It is an extremely common metal forming process used to convert cylindrical billets into hollow tubes, or more complex profiles and sections.

International Syalons are pleased to announce the availability of Zircalon 30 a new grade of zirconia-based advanced ceramic with greatly improved fracture toughness, which is ideal for induction welding applications.

The 20^th Century was an era of rapid innovation in ballistics technology, and subsequently in how conflicts were conducted. Military organisations worldwide opted to improve the manouverability of troops and vehicles without compromising the performance of protective equipment in response to high velocity impacts. This led to the gradual adoption of novel ceramic materials in defence applications.Continue reading→

Advanced ceramic grinding media are on the cutting-edge of wearing applications. The right grinding balls can be used to break down analytical samples, industrial intermediates, and more, simply by applying continuous abrasive forces. Generally, the goal is to reduce the size of particles, or to blend heterogeneous materials together. This can be carried out with hydraulic and pneumatic systems. But the oldest, simplest, and often most effective method, is to repeatedly impact sample materials with a tougher milling medium, causing particles to decompose through mechanical attrition.

International Syalons (Newcastle) Ltd. offices will be closed from Friday 21st December until Thursday 3rd January.

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Molten aluminium (Al) is an extremely reactive substance. The molten metal is so reactive that it will readily decompose water in the atmosphere, or moisture on wet tools, releasing hydrogen into the melt. Even small volumes of water condensing on a crucible furnace or transfer ladle can affect the quality of final castings. Excess hydrogen can affect the distribution of porosity, and the total amount of shrinkage, ultimately increasing scrappage. Eliminating gas absorption from molten aluminium is unfeasible. So, metallurgists tend to focus on preventing hydrogen introduction into the melt and removing as much as possible prior to casting.

Ceramics are still widely associated with the elegant yet brittle shapes of traditional manufacturing, despite the astronomic strides that materials scientists and engineers have made over the last two and a half centuries. This is primarily due to the schism between commercial and technical ceramic materials. Retail ceramics retain a flair for aesthetics over functionality, which has roots in Romantic-era pottery and ancient porcelain. These products retain that traditional sense of style and continue to dominate the general public’s perception of what ceramics are capable of.Continue reading→

A car engine block can weigh anything from 90 kilograms (kg) to over half a tonne without its associated parts, such as the power train or other directly connected components. The weight of the vehicle is one of the defining factors in its overall performance and efficiency, and reducing the weight profiles of integral components has been an ongoing challenge for advanced engineering of modern vehicles.

At International Syalons, we have explored the mechanical properties of silicon nitride (Si₃N₄) at great length. Silicon nitride is an advanced engineering ceramic that circumvents many of the conventional drawbacks of numerous oxide ceramics. Outstanding fracture toughness and high moduli of both rupture and elasticity impart excellent resistance to multiple wearing phenomena. This enables silicon nitride-based ceramics to withstand severe operating conditions that may cause comparatively brittle ceramics to propagate flaws, deform, or fail.Continue reading→