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In lubrication, the boundary layer formed consists of long chain hydrocarbons with a polar head.

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in Casting-Forming-Welding II by (119k points)
In lubrication, the boundary layer formed consists of long chain hydrocarbons with a polar head.

(a) True

(b) False

The question was posed to me at a job interview.

Question is taken from Friction and Lubrication in Metal Forming in portion Types of Die & Metal Forming Processes of Casting-Forming-Welding II

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The correct choice is (a) True

Easiest explanation: In lubrication, the performance of boundary layers and its formation basically depends on its physical and chemical adsorption. The boundary layers formed by a mechanism mainly consist of clusters and long chain hydrocarbons with a polar head. Then this polar group adheres to the surface and forms high viscosity hydrocarbon layers.

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