BINDERLESS CBN SINTERING WITH CUBIC PRESS

• Main Author: BAO YAHUA
• Format: Patent
• Language: Chinese; English
• Published: 01.03.2019
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

A method of sintering a binderless cBN body includes providing a boron nitride particle mixture into a pressure chamber, the boron nitride particle mixture having a first type of boron nitride particles and boron nitride filler particles, and the boron nitride filler particles having a different size and/or type than the first type of boron nitride particles, and sintering the boron nitride particle mixture in the pressure chamber to form the cBN body by generating a pressure in the pressure chamber of less than 7.7 GPa and heating the boron nitride particle mixture to a temperature ranging from about 1900 DEG C to about 2300 DEG C, wherein the cBN body has a density of at least 97 percent. 烧结无粘合剂cBN主体的方法包括将氮化硼颗粒混合物提供至压力室中，所述氮化硼颗粒混合物具有第类型的氮化硼颗粒和氮化硼填料颗粒，并且所述氮化硼填料颗粒具有与所述第类型的氮化硼颗粒不同的尺寸和/或类型；以及通过在所述压力室中生成小于7.7GPa的压力并且将所述氮化硼颗粒混合物加热至约1900℃至约2300℃范围内的温度，在所述压力室中烧结所述氮化硼颗粒混合物，以形成所述cBN主体，其中所述cBN主体具有至少97％的密度。