Effect of annealing treatment on the characteristics of bovine bone
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The effect of annealing on the properties of bovine bone was investigated over the temperature range of 400 ℃ to 1300 ℃ at a ramp rate of 10 ℃/minute. The XRD results indicated that annealing at between 600 ℃ and 1100 ℃ resulted in phase pure hydroxyapatite (HA). However, decomposition of HA to form tri-calcium phosphate was observed for samples annealed above 1000 ℃. Thermo-gram analysis of bovine bone revealed the existence of organic combinations that was completely removed from the structure during heat treatment above 600 ℃. Annealed bovine bone between 800 ℃-1000 ℃ exhibited features of interconnecting pore structure, suitable for biomedical application. The study revealed that proper heat treatment through the control of annealing temperature represent a viable method to produce a HA structure from bovine bone.
Abstract
The effect of annealing on the properties of bovine bone was investigated over the temperature range of 400 ℃ to 1300 ℃ at a ramp rate of 10 ℃/minute. The XRD results indicated that annealing at between 600 ℃ and 1100 ℃ resulted in phase pure hydroxyapatite (HA). However, decomposition of HA to form tri-calcium phosphate was observed for samples annealed above 1000 ℃. Thermo-gram analysis of bovine bone revealed the existence of organic combinations that was completely removed from the structure during heat treatment above 600 ℃. Annealed bovine bone between 800 ℃-1000 ℃ exhibited features of interconnecting pore structure, suitable for biomedical application. The study revealed that proper heat treatment through the control of annealing temperature represent a viable method to produce a HA structure from bovine bone.
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