인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
개인구독
소속 기관이 없으신 경우, 개인 정기구독을 하시면 저렴하게
논문을 무제한 열람 이용할 수 있어요.
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 저자정보
초록·키워드
Hydroxyapatite is the most important bio ceramic, due to its structure and chemical composition which is similar to bone.
Since feeble fracture toughness, brittleness and low tensile strength have restricted their use, for overcoming this problem, theywere often used as a secondary component. HAp-Al2O3 nano-composite powder combined the benefits of biocompatibility ofHAp and high strength of Al2O3. When HAp-Al2O3nano-composite powders were sintered at a higher temperature than 1100-1200 oC, HAp was decomposed and converted to the second phase of TCP, due to the formation of calcium aluminateincreasing decomposition speed of HAp to TCP at higher degree than 1100-1200 oC temperatures; therefore, with the additionof additives to the powders, the decomposition reaction of HAp could be inhibited and the properties could be improved. Inthis study the effects of alumina as reinforcement, pH, surfactant and different additives were investigated. At first,hydroxyapatite powder was synthesized. Then, the effect of different percentage of alumina (15, 20, 25), different pHs (9, 10,11), different surfactants and different additives on HAp-Al2O3 nano-composite powder were studied. The results showed thatthe addition of different additives resulted in increase of the thermal stability and properties of HAp-Al2O3nano compositepowder. By replacement of Cl? and F?ions with OHinHAp structure, decomposition of HAp decreased and stability of HApat higher temperatures was increased. Owing to the decomposition of HAp, the reaction between CaO and Al2O3 reduced;therefore, the amount of calcium alumina phases decreased something which resulted in Al2O3 phase. Moreover, replacementof Cl?and F?ions in the apatite structure limited the growth of the grains and decreased the crystallinity that led to a bettersolubility and bioactivity behavior of nano composite powder.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
최근 본 자료 전체보기
