A multi-step process is developed to create a nacre-like ceramic/metal composite. First, a slurry of $\mathit{Ni}$-coated alumina platelets and $\mathit{NiO}$ nano-particles is directionally freeze-cast and the ice is sublimed, creating a foam with aligned lamellar walls containing the two solid phases. Second, the foam is sintered under hydrogen to reduce the $\mathit{NiO}$ phases to metallic $\mathit{Ni}$ micro-particles. Third, hot pressing densifies both the channels between the aligned walls and some of the porosity within the walls, resulting in a brick-and-mortar composite with partially-aligned alumina platelets and 30 vol% $\mathit{Ni}$. Evidence of various toughening mechanisms - crack deflection, branching and bridging, as well as metal plasticity - is observed during three-point bending tests of double-edge notched beams.

开发了多步骤过程以产生类似珍珠母的陶瓷/金属复合材料。首先，将$\mathit{你}$涂层的氧化铝血小板和 $\mathit{氧化镍}$纳米粒子定向凝固，冰升华，形成泡沫，泡沫层壁对齐，包含两个固相。第二，泡沫在氢气中烧结以减少$\mathit{氧化镍}$ 金属相 $\mathit{你}$微粒。第三，热压使对齐的壁之间的通道和壁内的一些孔隙致密，从而形成了具有部分对齐的氧化铝片和30％（体积）的砖瓦复合材料。$\mathit{你}$。在双边缺口梁的三点弯曲测试中，观察到各种增韧机制的证据-裂纹挠曲，分支和桥接以及金属塑性。