1072
The effect of Zr and BN on the processability , phase formation ( s ) , surface wear , and mechanical properties of 3D-printed titanium was studied by printing commercially-pure titanium with premixed additions of 20 wt % Zr and 10 wt % BN using Laser Engineered Net Shaping ( LENS™ ) .
 material: Zr; material: BN; concept or principle: phase; material: s; concept or principle: surface; concept or principle: mechanical properties; manufacturing process: 3D-printed; material: titanium; material: Zr; material: BN; manufacturing process: Laser Engineered Net Shaping
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: Zr, BN, phase, s, surface, mechanical properties, 3D-printed, titanium, Zr, BN, Laser Engineered Net Shaping 
Answer:
 material: Zr; material: BN; concept or principle: phase; material: s; concept or principle: surface; concept or principle: mechanical properties; manufacturing process: 3D-printed; material: titanium; material: Zr; material: BN; manufacturing process: Laser Engineered Net Shaping