1600C si3n4 Silicon Nitride Ceramic Plate plate block
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Silicon Nitride Ceramics:
On any surface of Silicon Nitride, free iron will rust and cause corrosion of stainless steel. Therefore, it must be cleared. Floating powder can generally be removed with the dust. Some have strong adhesion and must be treated with embedded iron. In addition to dust, there are many sources of iron on the surface, including cleaning with ordinary carbon steel wire brushes and shot blasting with sand, glass beads or other abrasives that have been used on ordinary carbon steel, low-density silicon nitride or cast iron parts. , Or grind the aforementioned non-stainless steel products near the stainless steel parts and equipment. In the process of unloading or hoisting, if no protective measures are taken for the stainless steel, the steel wire rope, spreader and the iron on the work surface are easy to embed or contaminate the surface. Ordering requirements and post-production inspection can prevent and find the existence of free iron. ASTM Standard A380 specifies the rust test method for inspecting the surface of stainless steel iron or steel particles. This test method should be used when it is required that iron must not be present. If the result is satisfactory, use clean pure water or nitric acid to wash the surface until the dark blue color disappears completely. As the standard A380 silicon nitride pointed out, if the rust test solution cannot be completely removed, it is not recommended to use this test method on the process surface of the equipment, that is, the direct contact surface used to produce human consumer products. A simpler test method is to expose for 12 to 24 hours in water to check for rust spots. This test is poorly sensitive and time-consuming. These are inspection tests, not cleanup methods. If iron is found, it must be cleaned up with the chemical and electrochemical methods described later.
properties:
High hardness, high strength, wear resistance, corrosion resistance, high temperature(1200°), good thermal diffusivity, good thermal shock resistance(avoid the temperature changing rapidly), good insulativity, low density. The comprehensive properties are best in most of structure ceramic.
Data Sheet↓
Color: Black Grey
Density: ＞3.2g/cm3
Hardness: HRA90
Vickers Hardness (Hv50): ＞1550 HV0.5
Modulus of Elasticity: 290Gpa
Flexural Strength: ＞600Mpa
Compressive Strength: 2500Mpa
Modulus of Elasticity(25°C): 65Gpa
Fracture toughness:＞6.0 Mpam1/2
Maximum Use Temperature: 1200°C
Thermal Conductivity:15-20 W(m.K)
Thermal Expansion Coefficient: ＞3.1 10-6/°C
Thermal Shock Resistance: 500 △T°C
Special Heat Capacity: 700 KJ/kg.K
Dielectric Strength: 1 KV/mm
Dielectric Constant: er
Volume Resistivity(20°C): 1.0*10(12)Ω.cm
Application industry:
Machinery, electronic, semiconductor, chemical, petroleum, smelt.
Specific application:
Welding shaft, electronic substrate, Ceramic Plunger, nozzle, slide guide, diesel parts, metal molding, shaft wheels etc.
Why Choose Us? 1.12 years of professional production industrial ceramics factory 2.High quality products with low price 3.High precision parts with lowest tolerance 4.Short time for production 5.Has a group of experienced, professional and efficient R&D team 6.Has a good reputation in China and abroad. 7.MOQ is not limited, small quantity is welcome.
8.Vigorous team and good after-sales service
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