5585
Spatter particles ejected from the melt pool after melting of 316 L stainless steel by laser powder bed fusion additive manufacturing ( LPBF ) , were found to contain morphologies not observed in aB-atomized 316 L powder .
 process characterization: Spatter; concept or principle: particles; material: melt pool; manufacturing process: melting; material: stainless steel; manufacturing process: laser powder bed fusion additive manufacturing; manufacturing process: LPBF; concept or principle: morphologies; material: powder
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: Spatter, particles, melt pool, melting, stainless steel, laser powder bed fusion additive manufacturing, LPBF, morphologies, powder 
Answer:
 process characterization: Spatter; concept or principle: particles; material: melt pool; manufacturing process: melting; material: stainless steel; manufacturing process: laser powder bed fusion additive manufacturing; manufacturing process: LPBF; concept or principle: morphologies; material: powder