According to Fig. 8b, during heating from 900 C to 1500 C, the
LSR of the CP-Ti (DIL) sample was always higher than that of the
Ti–16Nb (DIL) sample. The LSR exhibited a maximum of 0.0613%/
min at 928 C for the CP-Ti (DIL) sample, indicating the climax of
the intermediate sintering stage of Ti particles. Similarly, the LSR
of the Ti–16Nb (DIL) sample also showed a maximum of
0.0345%/min at 935 C. With increasing temperature, a decreased
LSR was observed in both samples until approximately 990 C.
Such a similarity between the shrinkage behavior of the CP-Ti
(DIL) and Ti–16Nb (DIL) samples indicates that the densification
of the Ti–16Nb (DIL) sample was dominated by the sintering of
Ti particles at this temperature range, which should be attributed
to the low number density of Nb particles as well as the significant
difference between DTi?b-Ti and DNb?b-Ti [25]. The obvious neck
growth between Ti particles, instead of between Ti and Nb particles,
in the Ti–16Nb (900) samples (see Fig. 4a) also support this
deduction. In this case, the isolated Nb particles acted as diffusion
barriers constraining the shrinkage of the Ti particles in the
Ti–16Nb (DIL) sample. Therefore, the LSR of the Ti–16Nb (DIL) sample
was always lower than that of the CP-Ti (DIL) sample below
1000 C. From 986 C to 1295 C, there was no remarkable
variation of the LSR of the CP-Ti (DIL) sample
According to Fig. 8b, during heating from 900 C to 1500 C, theLSR of the CP-Ti (DIL) sample was always higher than that of theTi–16Nb (DIL) sample. The LSR exhibited a maximum of 0.0613%/min at 928 C for the CP-Ti (DIL) sample, indicating the climax ofthe intermediate sintering stage of Ti particles. Similarly, the LSRof the Ti–16Nb (DIL) sample also showed a maximum of0.0345%/min at 935 C. With increasing temperature, a decreasedLSR was observed in both samples until approximately 990 C.Such a similarity between the shrinkage behavior of the CP-Ti(DIL) and Ti–16Nb (DIL) samples indicates that the densificationof the Ti–16Nb (DIL) sample was dominated by the sintering ofTi particles at this temperature range, which should be attributedto the low number density of Nb particles as well as the significantdifference between DTi?b-Ti and DNb?b-Ti [25]. The obvious neckgrowth between Ti particles, instead of between Ti and Nb particles,in the Ti–16Nb (900) samples (see Fig. 4a) also support thisdeduction. In this case, the isolated Nb particles acted as diffusionbarriers constraining the shrinkage of the Ti particles in theTi–16Nb (DIL) sample. Therefore, the LSR of the Ti–16Nb (DIL) samplewas always lower than that of the CP-Ti (DIL) sample below1000 C. From 986 C to 1295 C, there was no remarkablevariation of the LSR of the CP-Ti (DIL) sample
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