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Effect of atmosphere on phase transformation in plasma-sprayed hydroxyapatite coatings during heat treatment

✍ Scribed by Chen, Jiyong ;Tong, Weidong ;Cao, Yang ;Feng, Jiaming ;Zhang, Xingdong

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
328 KB
Volume
34
Category
Article
ISSN
0021-9304

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✦ Synopsis

The purpose of this study was to evaluate the effect of atmo-sphere, tricalcium phosphate (TCP) and tetracalcium phossphere on the phase transformation in hydroxyapatite (HA) phate (TTCP) were more stable than HA, so heat treatcoatings during heat treatment by varying the atmosphere ment could not convert them into HA. However, in a huin the furnace pipe. Heat treatment always increased the mid atmosphere, heat treatment would transform TCP and TTCP into HA by hydrolytic reactions. α­§ 1997 John Wiley & crystallinity of HA coatings regardless of the kind of atmo-Sons, Inc.

sphere. Water molecules in atmosphere further promoted HA recrystallization during heat treatment. In a dry atmo-

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