期刊
ACS OMEGA
卷 7, 期 1, 页码 453-458出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.1c04839
关键词
-
资金
- National Science and Technology Major Project of China
The TCA-2 coating can inhibit the coking of lubricating oil on the metal surface within a certain temperature range, reduce surface activity, and improve heat resistance. It also shows good compatibility with lubricating oil, effectively reducing the surface temperature of the oil side.
High temperature around the rear bearing chamber of supersonic aero-engines often causes the coking of the lubricating oil on the shaft end cover. To figure out the problem, a method using the TCA-2 nitride ceramic coating with the thickness of several micrometers is proposed. A simulation experiment method of lubricating oil coking for high-temperature parts is developed, and the anticoking performance of the samples with the coating is studied. The results showed that the TCA-2 coating inhibits the coke of lubricating oil on the metal surface within a certain temperature range by about 40.7% under the 500 degrees C attributed to the decrease in the surface activity of high-temperature metal and increase in the heat resistance. The TCA-2 coating also shows good compatibility with the lubricating oil since the acid value change of lubricating oil decreases after the thermal oxidation experiment. The TCA-2 coating can effectively reduce the surface temperature of the oil side.
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