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The present study investigated for the first time the feasibility of producing by Selective Laser Melting ( SLM ) a NiCrAlY bond coat material directly onto an IN625 substrate itself produced by SLM .
 concept or principle: feasibility; manufacturing process: Selective Laser Melting; manufacturing process: SLM; application: bond coat; material: substrate; manufacturing process: SLM
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: feasibility, Selective Laser Melting, SLM, bond coat, substrate, SLM 
Answer:
 concept or principle: feasibility; manufacturing process: Selective Laser Melting; manufacturing process: SLM; application: bond coat; material: substrate; manufacturing process: SLM