Assertion: titanium dioxide | /r/HasProperty | heated to nitriding treatment
Facets:
value: for 4 hours
type: TEMPORAL
Source sentences:
text: After the sample was cooled, the ammonia system was filled into the closed system, the titanium dioxide was heated to 600 ° C, and nitriding treatment for 4 hours, and the sample was cooled to remove the sample; Add 0.4 g of the reduced black powder to a solution of 3 mL of polyvinylidene fluoride in N-methyl-2-pyrrolidone (20 mg/mL) and stir for 8 h.