Abstract:
A method of plugging a honeycomb body includes mixing a plugging mixture at a mixing temperature, wherein the plugging mixture comprises a plurality of inorganic particles, inorganic binder, organic binder, and water; dispensing the plugging mixture into a patty mold at a dispensing temperature; cooling the plugging mixture within the patty mold to a cooled temperature, such that a cement patty is formed; and pressing the cement patty into a plurality of channels in a honeycomb body, wherein the mixing temperature and the dispensing temperature are above a hydration point temperature of the organic binder in the plugging mixture, and the cooled temperature is below the hydration point temperature of the organic binder in the plugging mixture.
Abstract:
본 발명은 다공성 세라믹 발열체 조성물 및 상기 조성물로 제작된 세라믹 발열 구조체에 관한 것으로서, 조성물은, 질화알루미늄 및 질화규소 중 하나 이상과 탄화규소분말로 혼합 구성된 세라믹혼합분말, 상기 세라믹혼합분말에 혼합되는 규소계 금속분말을 포함하는 혼합체와; 상기 혼합체에 혼합체 100중량부 당, 0.5 중량부 내지 5 중량부 혼합되는 기공제와; 상기 혼합체에 혼합된 상태로, 세라믹혼합분말과 금속분말의 결합을 유지하는 것으로서, 상기 혼합체 100 중량부 당, 20 중량부 내지 30 중량부 포함되는 바인더로 구성된다. 본 발명의 다공성 세라믹 발열체 조성물은, 열전도율, 내부식성, 내열충격성이 우수하며, 특히 무수한 기공을 가져 외부의 오염물질을 흡착 및 열분해 함으로써, 가열은 물론 공기 정화 능력을 함께 구비한다.
Abstract:
L'invention concerne un procédé pour la réalisation d'une pièce creuse en matériau composite à matrice céramique comprenant les étapes consistant à : -mettre en forme une préforme fibreuse creuse, un noyau en matériau oxydable étant logé ou inséré dans la préforme (E1); -consolider ladite préforme (E3, E4); et -extraire le noyau par oxydation dudit noyau (E5).
Abstract:
Methods, systems, and processes are used to prepare novel ceramic composite structures that are strong, durable, light-weight, high performance and suitable for a myriad of industrial applications. The low manufacturing costs of the processes disclosed provide cheaper, faster ways of producing ceramic matrix composites at lower temperatures and allow for the existence of composite materials and structures which currently are not available.
Abstract:
A graphene/metal-oxide hybrid reinforced composite and a method for a graphene/metal-oxide hybrid reinforced composite. The method includes freeze drying a slurry comprising graphene oxide and flakes to form a flake-graphene oxide foam. The graphene/metal-oxide hybrid reinforced composite comprises graphene, metal, and metal oxide nanoparticles. The metal is arranged in parallel lamellar structure to form metal layers in the composite. The metal oxide nanoparticles are present at the interfaces between the metal layers and the graphene.
Abstract:
A method for making textured ceramics and the ceramics made thereby. The method comprises the steps of: (a) composition: mixing and drying the ingredients containing silicon nitride powder and sintering aids; (b) forming a green body: dry-pressing the dried powder through a steel die and then cold isostatic pressing to obtain a shaped body; (c) texturing the ceramic: making the green body flow in a one-dimensional or two-dimensional direction in order to achieve the high-performance ceramics with preferred grain arrangement and anisotropy growth by a flowing hot pressing sintering method.