1813
This was attributable to the random distribution of tiny pores on the surface of the LPBF samples , although immersion tests showed that the sample prepared with the highest scanning speed exhibited the highest corrosion rate .
 distribution, pores, surface, LPBF, sample, scanning speed, corrosion
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:
 distribution, pores, surface, LPBF, sample, scanning speed, corrosion