<s>[INST] Small attractive particles of different materials may behave very differently due to different properties (spray coating adhesion, droplet size, powder spreading, color intensity) and also due to the properties of the material itself like density, composition, and porosity. You are given a new material or particle for study with the most striking variations in its properties, which could lead to different uses and applications, the novel particulate material referred to as Nanopowder - X. The goal of the research is to investigate and verify if this new particulate material has superior coating adhesion due to some unusual combination of variable properties. To achieve this goal, you would select a representative set of repeatable bench-top spray coating experiments to measure the coating adhesion performance of this new material against some commonly used material named Ref - X in different experimental conditions. The described expanded scope of work consists of the below experimental details.
7.
a. You can only choose one experimental method i.e., either tensile-burst or the bead-pull methods for measuring coating adhesion.
D. Surface preparation of the substrate surface employed (make it concrete)
b. How (with which formula, constant, and type of risk analysis) the coating adhesion performance measured?[/INST]