The Silicon Nitride powder, gray, is new material which produces under the specific high temperature and high pressure, the main component of it is Silicon Nitride. It occupies 80% --97.5% of the total Ingredient, The products of different purity and composition can be produced to satisfy user’s need.
　

4kinds of purity Si3N4 Powder

I. Principal Characters

        (1) Fine corrosion and erosion-resistance, thermal shock resistance, wear-resistance; it can be employed under the temperature of 1900 Celsius degrees.
        (2) Fine disintegration resistance, rather stable chemical ingredient and thermal conductivity.
        (3) For containing nitride, this product possesses the properties of little expansion ratio, high thermal conductivity, high degree of firmness, non-contractive when heating up.
        (4) High intensity and durable.
        (5) Under high temperature, an oxide film will develop on the surface, so as to protect inner material from being affected by chemical reactions.

II. Key Properties

        High strength over a wide temperature range
        High fracture toughness
        High hardness
        Outstanding wear resistance, both impingement and frictional modes
        Good thermal shock resistance
        Good interface compatibility
        Good chemical resistance

III. Typical Uses

        Rotating bearing balls and rollers
        Cutting tools
        Engine moving parts - valves, turbocharger rotors
        Engine wear parts - cam followers, tappet shims
        Turbine blades, vanes, buckets
        Metal tube forming rolls and dies
        Precision shafts and axles in high wear environments