The structure of artificial bone was designed according to the long bone of people , the outer was compact layer , the inner was porous spongiosa layer 仿人長干骨的結構梯度進行材料設計:外層為致密層,內(nèi)層為多孔松質(zhì)層。
Through observing the interface of porosity hap sintered at 1050 , the gradient changing of pore size was observed that was like gradient structure of bone . in the compact layer there were a few about 50 y mpores and many about 5um micropores . in the porous layer there were many about 500um pores 致密層存在少量的尺寸為50 m左右的氣孔和大量的尺寸為5 m左右的微孔,這是原料中殘留有機物燒失以及粉末顆粒燒結不致密形成的;多孔層存在大量的尺寸為500 m左右的大孔,這是檸檬酸造孔劑燒失形成的,在大孔之間存在一些約50 m 、 100 m的氣孔。