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The aim of this work was to investigate whether the same positive effect of nitriding could be obtained for 316 L that was additive manufactured using the laser powder-bed fusion process and further solution treated at 1060 °C for 30 min , low-temperature plasma nitrided at 430 °C or both .
 manufacturing process: nitriding; material: be; manufacturing process: additive manufactured; enabling technology: laser; concept or principle: fusion; concept or principle: solution; manufacturing process: plasma nitrided
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: nitriding, be, additive manufactured, laser, fusion, solution, plasma nitrided 
Answer:
 manufacturing process: nitriding; material: be; manufacturing process: additive manufactured; enabling technology: laser; concept or principle: fusion; concept or principle: solution; manufacturing process: plasma nitrided