7351
The microstructure , phase constituents , in vitro electrochemical , tribological and biological properties of these composite coatings deposited using different laser powers was studied .
 concept or principle: microstructure; concept or principle: phase; concept or principle: electrochemical; concept or principle: tribological; concept or principle: properties; material: composite coatings; process parameter: laser powers
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
 Entities: microstructure, phase, electrochemical, tribological, properties, composite coatings, laser powers 
Answer:
 concept or principle: microstructure; concept or principle: phase; concept or principle: electrochemical; concept or principle: tribological; concept or principle: properties; material: composite coatings; process parameter: laser powers