Standard Test Method for Determination of Additive Elements in Lubricating Oils by EDXRF Analysis

Importancia y uso:

5.1 Lubricating oils are formulated with organo-metallic additives, which act, for example, as detergents, antioxidants, antifoaming, or antiwear agents, or a combination thereof. Some of these additives contain one or more of the following elements: magnesium, phosphorus, sulfur, chlorine, calcium, zinc, and molybdenum. This test method provides a means of determining the concentrations of these elements, which in turn provides an indication of the additive content of these oils.

5.2 Several additive elements and their compounds are added to the lubricating oils to give beneficial performance (Table 2).

5.3 Additive packages are the concentrates that are used to blend lubricating oils.

5.4 This test method is primarily intended to be used for the monitoring of additive elements in lubricating oils.

5.5 If this test method is applied to lubricating oils with matrices significantly different from the calibration materials specified in this test method, the cautions and recommendations in Section 6 should be observed when interpreting the results.

Subcomité:

D02.03

Referida por:

D8127-23, D7343-20, D7455-24, D6074-15R22, D7578-20

Volúmen:

05.04

Número ICS:

75.100 (Lubricants, industrial oils and related products)

Palabras clave:

additive elements; additives; calcium; chlorine; EDXRF; energy dispersive; lubricating oil; magnesium; molybdenum; phosphorus; spectrometry; sulfur; X-ray; XRF; zinc;