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Materials for mechanical seal friction pairs

2023-10-23View Original

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Table 1 Properties of domestic silicon carbide. Performance: Sintered silicon nitride, hot-pressed silicon nitride. Density/g: NaN-3; Porosity/%; Flexural strength/MPa; Compressive strength/MPa; Tensile strength/MPa; Impact strength/MPa; Elastic modulus/MPa; Coefficient of friction; Hardness (HRA); Coefficient of thermal expansion/℃-1; Thermal conductivity/W·(m·K)-1; Electrical resistivity (200℃)/Ω·cm; Electrical resistivity (700℃)/Ω·cm: 2.5–2.6; 13–16; 196.13; 1176.81; 117.68–137.29; 0.15–0.2; (1.670–2.16)×10^5; 0.180–852.5×10^-6; 5.021; 1018; 1083.13

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