High-strength self-lubricating metal ceramic bearing and preparation method thereof
A cermet, high-strength technology, applied in the field of cermet bearings, can solve the problems of not meeting the bearing strength requirements, affecting the strength of the cermet, affecting the service life of the bearing, etc., to reduce the interface effect, increase the apparent porosity, and improve the lubricity. Effect
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[0013] A high-strength self-lubricating cermet bearing, made of the following raw materials in parts by weight (kg): iron citrate 2.3, basic nickel carbonate 3.1, water 25, ammonia water, TiH 2 2.9, nano carbon 1.1, TiC15, lubricant 0.7, C1, Cr3.9, W5.8, Mo5.1, V3.1, Fe65.
[0014] The preparation method of the described high-strength self-lubricating cermet bearing comprises the following steps:
[0015] (1) Add ferric citrate to water in a nitrogen atmosphere, heat to 60°C, stir at 90 rpm for 1.5 hours, add TiC and nano-carbon, stir for 1 hour, then add basic nickel carbonate and stir for 3 hours, use Adjust the pH value to 6 with ammonia water, heat to 90°C and keep stirring at this temperature for 2 hours to obtain a gel;
[0016] (2) Heating the gel to 150°C and maintaining the temperature until no smoke is produced, then stopping the heating, then grinding the resulting block into powder, and calcining the powder at 500°C for 2 hours in a hydrogen atmosphere to obtain ...
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