Standard Test Method for Condition Monitoring of Nitration in In-Service Petroleum and Hydrocarbon-Based Lubricants by Trend Analysis Using Fourier Transform Infrared (FT-IR) Spectrometry

Importancia y uso:

5.1 There is a wide variety of nitration compounds that may be produced and accumulate when oils react with gaseous nitrates formed during the engine combustion process. These nitration products may increase the viscosity, acidity and insolubles in the oil, which may lead to ring sticking and filter plugging. Monitoring of nitration products is therefore an important parameter in determining overall machinery health and should be considered in conjunction with data from other tests such as atomic emission (AE) and atomic absorption (AA) spectroscopy for wear metal analysis (Test Method D5185), physical property tests (Test Methods D445 and D2896), and other FT-IR oil analysis methods for oxidation (Test Method D7414), sulfate by-products (Test Method D7415), and additive depletion (Test Method D7412), which also assess elements of the oil’s condition (1-6).

Subcomité:

D02.96.03

Referida por:

D7418-23, D7412-22, D7418-23, D7414-22, D7415-22, D7889-21, D8291-24, D7415-22, D7412-22, D7415-22, D7844-22A, D7418-23, D7414-22, D7414-22

Volúmen:

05.04

Número ICS:

75.100 (Lubricants, industrial oils and related products), 75.160.20 (Liquid fuels)

Palabras clave:

condition monitoring; differential trend analysis; direct trend analysis; Fourier transform infrared; FT-IR; hydrocarbon-based lubricants; infrared; in-service petroleum lubricants; IR; lubricants; nitration; oils;