6931
Evaporation of B2O3 from fine TiB particles did not destabilize the oxidation layer in the EB-PBF-built alloy .
 concept or principle: Evaporation; material: B2O3; concept or principle: particles; manufacturing process: oxidation; process parameter: layer; material: alloy
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: Evaporation, B2O3, particles, oxidation, layer, alloy 
Answer:
 concept or principle: Evaporation; material: B2O3; concept or principle: particles; manufacturing process: oxidation; process parameter: layer; material: alloy