6739
The morphological features , surface roughness , phase content , and corrosion resistance of the MS samples in their aB-fabricated ( ASF ) state were compared after LPEB irradiation .
 surface roughness, phase, corrosion resistance, samples, irradiation
Please list all entity words in the text that fit the category. Output format is "word1, 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} 
Answer:
 surface roughness, phase, corrosion resistance, samples, irradiation