Inhibiting Coking of Lubricating Oil and Thermal Insulation of Bearing Chamber Wall by TCA-2 Nitride Ceramic Coating

Yanjun Li; Shixuan Ren; Guozhu Liu; Zhenxia Liu; Ruifeng Ma

doi:10.1021/acsomega.1c04839

Inhibiting Coking of Lubricating Oil and Thermal Insulation of Bearing Chamber Wall by TCA-2 Nitride Ceramic Coating

Yanjun Li, Shixuan Ren, Guozhu Liu, Zhenxia Liu, Ruifeng Ma

School of Power and Energy

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

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 °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.

Original language	English
Pages (from-to)	453-458
Number of pages	6
Journal	ACS Omega
Volume	7
Issue number	1
DOIs	https://doi.org/10.1021/acsomega.1c04839
State	Published - 11 Jan 2022

Access to Document

10.1021/acsomega.1c04839

Cite this

@article{04d7f9297a064cc680fa79932db3521d,

title = "Inhibiting Coking of Lubricating Oil and Thermal Insulation of Bearing Chamber Wall by TCA-2 Nitride Ceramic Coating",

abstract = "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 °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.",

author = "Yanjun Li and Shixuan Ren and Guozhu Liu and Zhenxia Liu and Ruifeng Ma",

note = "Publisher Copyright: {\textcopyright} 2021 The Authors. Published by American Chemical Society",

year = "2022",

month = jan,

day = "11",

doi = "10.1021/acsomega.1c04839",

language = "英语",

volume = "7",

pages = "453--458",

journal = "ACS Omega",

issn = "2470-1343",

publisher = "American Chemical Society",

number = "1",

}

TY - JOUR

T1 - Inhibiting Coking of Lubricating Oil and Thermal Insulation of Bearing Chamber Wall by TCA-2 Nitride Ceramic Coating

AU - Li, Yanjun

AU - Ren, Shixuan

AU - Liu, Guozhu

AU - Liu, Zhenxia

AU - Ma, Ruifeng

PY - 2022/1/11

Y1 - 2022/1/11

N2 - 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 °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.

AB - 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 °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.

UR - http://www.scopus.com/inward/record.url?scp=85122288993&partnerID=8YFLogxK

U2 - 10.1021/acsomega.1c04839

DO - 10.1021/acsomega.1c04839

M3 - 文章

AN - SCOPUS:85122288993

SN - 2470-1343

VL - 7

SP - 453

EP - 458

JO - ACS Omega

JF - ACS Omega

IS - 1

ER -

Inhibiting Coking of Lubricating Oil and Thermal Insulation of Bearing Chamber Wall by TCA-2 Nitride Ceramic Coating

Abstract

Access to Document

Other files and links

Fingerprint

Cite this