摘要:
The present invention relates to a method of making a powder composition, which is suitable for production of a cBN composite material comprising cBN grains, a metallic binder phase and a ceramic binder phase. The method comprises a step of providing at least one ceramic binder phase forming powder in a milling device. Thereafter the at least one ceramic binder phase forming powder is subjected to a milling operation in the milling device to form a milled powder with 0.1 μm 50 ≤ 1.40 μm of the aluminium powder. The invention also relates to a method of making a cBN composite material.
摘要:
The present invention relates to a method of making a cBN material comprising the steps of: -providing a powder mixture comprising cBN grains, aluminum and a Ti(C x N y O z ) a powder, -subjecting the powder mixture to a milling to form a powder blend, -subjecting the powder blend to a forming operation to form a green body, - subjecting said green body to a pre-sintering step, at a temperature between 650 to 950°C, to form a pre-sintered body, - subjecting said pre-sintered body to a HPHT operation to form the cBN material; where the Ti(C x N y O z ) a powder is stoichiometric so that 0.05 2 O 3 phase, a binder phase of TiC, TiN and/or TiCN, W and Co, whereby a quotient Q is
摘要翻译:本发明涉及一种制备cBN材料的方法,包括以下步骤: - 提供包含cBN晶粒,铝和Ti(C x N y O z)粉末的粉末混合物, - 将粉末混合物喷射至研磨以形成粉末混合物, - 将所述粉末混合物喷射到成型操作以形成生坯, - 在650至950℃之间的温度下对所述生坯进行预烧结步骤以形成预烧结体, - 对所述预烧结体进行处理, 烧结体进行HPHT操作以形成cBN材料; 其中Ti(C x N y O z)a粉末是化学计量的,使得0.05