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In this study , Ti/B4C + BN composites are developed for high-temperature applications by designed-incorporation of ceramic reinforcement ( 5 wt % total ) into commercially-pure titanium to form combined particle and in situ reinforcing phases .
 BN, ceramic reinforcement, titanium, particle, in situ
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:
 BN, ceramic reinforcement, titanium, particle, in situ